--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/chromium/src/WebFrameImpl.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,2194 @@
+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// How ownership works
+// -------------------
+//
+// Big oh represents a refcounted relationship: owner O--- ownee
+//
+// WebView (for the toplevel frame only)
+// O
+// |
+// Page O------- Frame (m_mainFrame) O-------O FrameView
+// ||
+// ||
+// FrameLoader O-------- WebFrame (via FrameLoaderClient)
+//
+// FrameLoader and Frame are formerly one object that was split apart because
+// it got too big. They basically have the same lifetime, hence the double line.
+//
+// WebFrame is refcounted and has one ref on behalf of the FrameLoader/Frame.
+// This is not a normal reference counted pointer because that would require
+// changing WebKit code that we don't control. Instead, it is created with this
+// ref initially and it is removed when the FrameLoader is getting destroyed.
+//
+// WebFrames are created in two places, first in WebViewImpl when the root
+// frame is created, and second in WebFrame::CreateChildFrame when sub-frames
+// are created. WebKit will hook up this object to the FrameLoader/Frame
+// and the refcount will be correct.
+//
+// How frames are destroyed
+// ------------------------
+//
+// The main frame is never destroyed and is re-used. The FrameLoader is re-used
+// and a reference to the main frame is kept by the Page.
+//
+// When frame content is replaced, all subframes are destroyed. This happens
+// in FrameLoader::detachFromParent for each subframe.
+//
+// Frame going away causes the FrameLoader to get deleted. In FrameLoader's
+// destructor, it notifies its client with frameLoaderDestroyed. This calls
+// WebFrame::Closing and then derefs the WebFrame and will cause it to be
+// deleted (unless an external someone is also holding a reference).
+
+#include "config.h"
+#include "WebFrameImpl.h"
+
+#include "Chrome.h"
+#include "ChromiumBridge.h"
+#include "ClipboardUtilitiesChromium.h"
+#include "Console.h"
+#include "DOMUtilitiesPrivate.h"
+#include "DOMWindow.h"
+#include "Document.h"
+#include "DocumentFragment.h" // Only needed for ReplaceSelectionCommand.h :(
+#include "DocumentLoader.h"
+#include "DocumentMarker.h"
+#include "Editor.h"
+#include "EventHandler.h"
+#include "FormState.h"
+#include "FrameLoadRequest.h"
+#include "FrameLoader.h"
+#include "FrameTree.h"
+#include "FrameView.h"
+#include "GraphicsContext.h"
+#include "HTMLCollection.h"
+#include "HTMLFormElement.h"
+#include "HTMLFrameOwnerElement.h"
+#include "HTMLHeadElement.h"
+#include "HTMLInputElement.h"
+#include "HTMLLinkElement.h"
+#include "HTMLNames.h"
+#include "HistoryItem.h"
+#include "InspectorController.h"
+#include "Page.h"
+#include "PlatformContextSkia.h"
+#include "PluginDocument.h"
+#include "PrintContext.h"
+#include "RenderFrame.h"
+#include "RenderTreeAsText.h"
+#include "RenderView.h"
+#include "RenderWidget.h"
+#include "ReplaceSelectionCommand.h"
+#include "ResourceHandle.h"
+#include "ResourceRequest.h"
+#include "ScriptController.h"
+#include "ScriptSourceCode.h"
+#include "ScriptValue.h"
+#include "ScrollTypes.h"
+#include "ScrollbarTheme.h"
+#include "SelectionController.h"
+#include "Settings.h"
+#include "SkiaUtils.h"
+#include "SubstituteData.h"
+#include "TextAffinity.h"
+#include "TextIterator.h"
+#include "WebAnimationControllerImpl.h"
+#include "WebConsoleMessage.h"
+#include "WebDataSourceImpl.h"
+#include "WebDocument.h"
+#include "WebFindOptions.h"
+#include "WebFormElement.h"
+#include "WebFrameClient.h"
+#include "WebHistoryItem.h"
+#include "WebInputElement.h"
+#include "WebPasswordAutocompleteListener.h"
+#include "WebPlugin.h"
+#include "WebPluginContainerImpl.h"
+#include "WebRange.h"
+#include "WebRect.h"
+#include "WebScriptSource.h"
+#include "WebSecurityOrigin.h"
+#include "WebSize.h"
+#include "WebURLError.h"
+#include "WebVector.h"
+#include "WebViewImpl.h"
+#include "XPathResult.h"
+#include "markup.h"
+
+#include <algorithm>
+#include <wtf/CurrentTime.h>
+
+
+#if OS(DARWIN)
+#include "LocalCurrentGraphicsContext.h"
+#endif
+
+#if OS(LINUX)
+#include <gdk/gdk.h>
+#endif
+
+using namespace WebCore;
+
+namespace WebKit {
+
+static int frameCount = 0;
+
+// Key for a StatsCounter tracking how many WebFrames are active.
+static const char* const webFrameActiveCount = "WebFrameActiveCount";
+
+static const char* const osdType = "application/opensearchdescription+xml";
+static const char* const osdRel = "search";
+
+// Backend for contentAsPlainText, this is a recursive function that gets
+// the text for the current frame and all of its subframes. It will append
+// the text of each frame in turn to the |output| up to |maxChars| length.
+//
+// The |frame| must be non-null.
+static void frameContentAsPlainText(size_t maxChars, Frame* frame,
+ Vector<UChar>* output)
+{
+ Document* doc = frame->document();
+ if (!doc)
+ return;
+
+ if (!frame->view())
+ return;
+
+ // TextIterator iterates over the visual representation of the DOM. As such,
+ // it requires you to do a layout before using it (otherwise it'll crash).
+ if (frame->view()->needsLayout())
+ frame->view()->layout();
+
+ // Select the document body.
+ RefPtr<Range> range(doc->createRange());
+ ExceptionCode exception = 0;
+ range->selectNodeContents(doc->body(), exception);
+
+ if (!exception) {
+ // The text iterator will walk nodes giving us text. This is similar to
+ // the plainText() function in TextIterator.h, but we implement the maximum
+ // size and also copy the results directly into a wstring, avoiding the
+ // string conversion.
+ for (TextIterator it(range.get()); !it.atEnd(); it.advance()) {
+ const UChar* chars = it.characters();
+ if (!chars) {
+ if (it.length()) {
+ // It appears from crash reports that an iterator can get into a state
+ // where the character count is nonempty but the character pointer is
+ // null. advance()ing it will then just add that many to the null
+ // pointer which won't be caught in a null check but will crash.
+ //
+ // A null pointer and 0 length is common for some nodes.
+ //
+ // IF YOU CATCH THIS IN A DEBUGGER please let brettw know. We don't
+ // currently understand the conditions for this to occur. Ideally, the
+ // iterators would never get into the condition so we should fix them
+ // if we can.
+ ASSERT_NOT_REACHED();
+ break;
+ }
+
+ // Just got a null node, we can forge ahead!
+ continue;
+ }
+ size_t toAppend =
+ std::min(static_cast<size_t>(it.length()), maxChars - output->size());
+ output->append(chars, toAppend);
+ if (output->size() >= maxChars)
+ return; // Filled up the buffer.
+ }
+ }
+
+ // The separator between frames when the frames are converted to plain text.
+ const UChar frameSeparator[] = { '\n', '\n' };
+ const size_t frameSeparatorLen = 2;
+
+ // Recursively walk the children.
+ FrameTree* frameTree = frame->tree();
+ for (Frame* curChild = frameTree->firstChild(); curChild; curChild = curChild->tree()->nextSibling()) {
+ // Make sure the frame separator won't fill up the buffer, and give up if
+ // it will. The danger is if the separator will make the buffer longer than
+ // maxChars. This will cause the computation above:
+ // maxChars - output->size()
+ // to be a negative number which will crash when the subframe is added.
+ if (output->size() >= maxChars - frameSeparatorLen)
+ return;
+
+ output->append(frameSeparator, frameSeparatorLen);
+ frameContentAsPlainText(maxChars, curChild, output);
+ if (output->size() >= maxChars)
+ return; // Filled up the buffer.
+ }
+}
+
+WebPluginContainerImpl* WebFrameImpl::pluginContainerFromFrame(Frame* frame)
+{
+ if (!frame)
+ return 0;
+ if (!frame->document() || !frame->document()->isPluginDocument())
+ return 0;
+ PluginDocument* pluginDocument = static_cast<PluginDocument*>(frame->document());
+ return static_cast<WebPluginContainerImpl *>(pluginDocument->pluginWidget());
+}
+
+// Simple class to override some of PrintContext behavior. Some of the methods
+// made virtual so that they can be overriden by ChromePluginPrintContext.
+class ChromePrintContext : public PrintContext, public Noncopyable {
+public:
+ ChromePrintContext(Frame* frame)
+ : PrintContext(frame)
+ , m_printedPageWidth(0)
+ {
+ }
+
+ virtual void begin(float width)
+ {
+ ASSERT(!m_printedPageWidth);
+ m_printedPageWidth = width;
+ PrintContext::begin(m_printedPageWidth);
+ }
+
+ virtual void end()
+ {
+ PrintContext::end();
+ }
+
+ virtual float getPageShrink(int pageNumber) const
+ {
+ IntRect pageRect = m_pageRects[pageNumber];
+ return m_printedPageWidth / pageRect.width();
+ }
+
+ // Spools the printed page, a subrect of m_frame. Skip the scale step.
+ // NativeTheme doesn't play well with scaling. Scaling is done browser side
+ // instead. Returns the scale to be applied.
+ // On Linux, we don't have the problem with NativeTheme, hence we let WebKit
+ // do the scaling and ignore the return value.
+ virtual float spoolPage(GraphicsContext& ctx, int pageNumber)
+ {
+ IntRect pageRect = m_pageRects[pageNumber];
+ float scale = m_printedPageWidth / pageRect.width();
+
+ ctx.save();
+#if OS(LINUX)
+ ctx.scale(WebCore::FloatSize(scale, scale));
+#endif
+ ctx.translate(static_cast<float>(-pageRect.x()),
+ static_cast<float>(-pageRect.y()));
+ ctx.clip(pageRect);
+ m_frame->view()->paintContents(&ctx, pageRect);
+ ctx.restore();
+ return scale;
+ }
+
+ virtual void computePageRects(const FloatRect& printRect, float headerHeight, float footerHeight, float userScaleFactor, float& outPageHeight)
+ {
+ return PrintContext::computePageRects(printRect, headerHeight, footerHeight, userScaleFactor, outPageHeight);
+ }
+
+ virtual int pageCount() const
+ {
+ return PrintContext::pageCount();
+ }
+
+ virtual bool shouldUseBrowserOverlays() const
+ {
+ return true;
+ }
+
+private:
+ // Set when printing.
+ float m_printedPageWidth;
+};
+
+// Simple class to override some of PrintContext behavior. This is used when
+// the frame hosts a plugin that supports custom printing. In this case, we
+// want to delegate all printing related calls to the plugin.
+class ChromePluginPrintContext : public ChromePrintContext {
+public:
+ ChromePluginPrintContext(Frame* frame, int printerDPI)
+ : ChromePrintContext(frame), m_pageCount(0), m_printerDPI(printerDPI)
+ {
+ // This HAS to be a frame hosting a full-mode plugin
+ ASSERT(frame->document()->isPluginDocument());
+ }
+
+ virtual void begin(float width)
+ {
+ }
+
+ virtual void end()
+ {
+ WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(m_frame);
+ if (pluginContainer && pluginContainer->supportsPaginatedPrint())
+ pluginContainer->printEnd();
+ else
+ ASSERT_NOT_REACHED();
+ }
+
+ virtual float getPageShrink(int pageNumber) const
+ {
+ // We don't shrink the page (maybe we should ask the widget ??)
+ return 1.0;
+ }
+
+ virtual void computePageRects(const FloatRect& printRect, float headerHeight, float footerHeight, float userScaleFactor, float& outPageHeight)
+ {
+ WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(m_frame);
+ if (pluginContainer && pluginContainer->supportsPaginatedPrint())
+ m_pageCount = pluginContainer->printBegin(IntRect(printRect), m_printerDPI);
+ else
+ ASSERT_NOT_REACHED();
+ }
+
+ virtual int pageCount() const
+ {
+ return m_pageCount;
+ }
+
+ // Spools the printed page, a subrect of m_frame. Skip the scale step.
+ // NativeTheme doesn't play well with scaling. Scaling is done browser side
+ // instead. Returns the scale to be applied.
+ virtual float spoolPage(GraphicsContext& ctx, int pageNumber)
+ {
+ WebPluginContainerImpl* pluginContainer = WebFrameImpl::pluginContainerFromFrame(m_frame);
+ if (pluginContainer && pluginContainer->supportsPaginatedPrint())
+ pluginContainer->printPage(pageNumber, &ctx);
+ else
+ ASSERT_NOT_REACHED();
+ return 1.0;
+ }
+
+ virtual bool shouldUseBrowserOverlays() const
+ {
+ return false;
+ }
+
+private:
+ // Set when printing.
+ int m_pageCount;
+ int m_printerDPI;
+};
+
+static WebDataSource* DataSourceForDocLoader(DocumentLoader* loader)
+{
+ return loader ? WebDataSourceImpl::fromDocumentLoader(loader) : 0;
+}
+
+
+// WebFrame -------------------------------------------------------------------
+
+class WebFrameImpl::DeferredScopeStringMatches {
+public:
+ DeferredScopeStringMatches(WebFrameImpl* webFrame,
+ int identifier,
+ const WebString& searchText,
+ const WebFindOptions& options,
+ bool reset)
+ : m_timer(this, &DeferredScopeStringMatches::doTimeout)
+ , m_webFrame(webFrame)
+ , m_identifier(identifier)
+ , m_searchText(searchText)
+ , m_options(options)
+ , m_reset(reset)
+ {
+ m_timer.startOneShot(0.0);
+ }
+
+private:
+ void doTimeout(Timer<DeferredScopeStringMatches>*)
+ {
+ m_webFrame->callScopeStringMatches(
+ this, m_identifier, m_searchText, m_options, m_reset);
+ }
+
+ Timer<DeferredScopeStringMatches> m_timer;
+ RefPtr<WebFrameImpl> m_webFrame;
+ int m_identifier;
+ WebString m_searchText;
+ WebFindOptions m_options;
+ bool m_reset;
+};
+
+
+// WebFrame -------------------------------------------------------------------
+
+int WebFrame::instanceCount()
+{
+ return frameCount;
+}
+
+WebFrame* WebFrame::frameForEnteredContext()
+{
+ Frame* frame =
+ ScriptController::retrieveFrameForEnteredContext();
+ return WebFrameImpl::fromFrame(frame);
+}
+
+WebFrame* WebFrame::frameForCurrentContext()
+{
+ Frame* frame =
+ ScriptController::retrieveFrameForCurrentContext();
+ return WebFrameImpl::fromFrame(frame);
+}
+
+WebFrame* WebFrame::fromFrameOwnerElement(const WebElement& element)
+{
+ return WebFrameImpl::fromFrameOwnerElement(
+ PassRefPtr<Element>(element).get());
+}
+
+WebString WebFrameImpl::name() const
+{
+ return m_frame->tree()->name();
+}
+
+void WebFrameImpl::setName(const WebString& name)
+{
+ m_frame->tree()->setName(name);
+}
+
+WebURL WebFrameImpl::url() const
+{
+ const WebDataSource* ds = dataSource();
+ if (!ds)
+ return WebURL();
+ return ds->request().url();
+}
+
+WebURL WebFrameImpl::favIconURL() const
+{
+ FrameLoader* frameLoader = m_frame->loader();
+ // The URL to the favicon may be in the header. As such, only
+ // ask the loader for the favicon if it's finished loading.
+ if (frameLoader->state() == FrameStateComplete) {
+ const KURL& url = frameLoader->iconURL();
+ if (!url.isEmpty())
+ return url;
+ }
+ return WebURL();
+}
+
+WebURL WebFrameImpl::openSearchDescriptionURL() const
+{
+ FrameLoader* frameLoader = m_frame->loader();
+ if (frameLoader->state() == FrameStateComplete
+ && m_frame->document() && m_frame->document()->head()
+ && !m_frame->tree()->parent()) {
+ HTMLHeadElement* head = m_frame->document()->head();
+ if (head) {
+ RefPtr<HTMLCollection> children = head->children();
+ for (Node* child = children->firstItem(); child; child = children->nextItem()) {
+ HTMLLinkElement* linkElement = toHTMLLinkElement(child);
+ if (linkElement
+ && linkElement->type() == osdType
+ && linkElement->rel() == osdRel
+ && !linkElement->href().isEmpty())
+ return linkElement->href();
+ }
+ }
+ }
+ return WebURL();
+}
+
+WebString WebFrameImpl::encoding() const
+{
+ return frame()->loader()->writer()->encoding();
+}
+
+WebSize WebFrameImpl::scrollOffset() const
+{
+ FrameView* view = frameView();
+ if (view)
+ return view->scrollOffset();
+
+ return WebSize();
+}
+
+WebSize WebFrameImpl::contentsSize() const
+{
+ return frame()->view()->contentsSize();
+}
+
+int WebFrameImpl::contentsPreferredWidth() const
+{
+ if (m_frame->document() && m_frame->document()->renderView())
+ return m_frame->document()->renderView()->minPrefWidth();
+ return 0;
+}
+
+int WebFrameImpl::documentElementScrollHeight() const
+{
+ if (m_frame->document() && m_frame->document()->documentElement())
+ return m_frame->document()->documentElement()->scrollHeight();
+ return 0;
+}
+
+bool WebFrameImpl::hasVisibleContent() const
+{
+ return frame()->view()->visibleWidth() > 0 && frame()->view()->visibleHeight() > 0;
+}
+
+WebView* WebFrameImpl::view() const
+{
+ return viewImpl();
+}
+
+WebFrame* WebFrameImpl::opener() const
+{
+ Frame* opener = 0;
+ if (m_frame)
+ opener = m_frame->loader()->opener();
+ return fromFrame(opener);
+}
+
+WebFrame* WebFrameImpl::parent() const
+{
+ Frame* parent = 0;
+ if (m_frame)
+ parent = m_frame->tree()->parent();
+ return fromFrame(parent);
+}
+
+WebFrame* WebFrameImpl::top() const
+{
+ if (m_frame)
+ return fromFrame(m_frame->tree()->top());
+
+ return 0;
+}
+
+WebFrame* WebFrameImpl::firstChild() const
+{
+ return fromFrame(frame()->tree()->firstChild());
+}
+
+WebFrame* WebFrameImpl::lastChild() const
+{
+ return fromFrame(frame()->tree()->lastChild());
+}
+
+WebFrame* WebFrameImpl::nextSibling() const
+{
+ return fromFrame(frame()->tree()->nextSibling());
+}
+
+WebFrame* WebFrameImpl::previousSibling() const
+{
+ return fromFrame(frame()->tree()->previousSibling());
+}
+
+WebFrame* WebFrameImpl::traverseNext(bool wrap) const
+{
+ return fromFrame(frame()->tree()->traverseNextWithWrap(wrap));
+}
+
+WebFrame* WebFrameImpl::traversePrevious(bool wrap) const
+{
+ return fromFrame(frame()->tree()->traversePreviousWithWrap(wrap));
+}
+
+WebFrame* WebFrameImpl::findChildByName(const WebString& name) const
+{
+ return fromFrame(frame()->tree()->child(name));
+}
+
+WebFrame* WebFrameImpl::findChildByExpression(const WebString& xpath) const
+{
+ if (xpath.isEmpty())
+ return 0;
+
+ Document* document = m_frame->document();
+
+ ExceptionCode ec = 0;
+ PassRefPtr<XPathResult> xpathResult =
+ document->evaluate(xpath,
+ document,
+ 0, // namespace
+ XPathResult::ORDERED_NODE_ITERATOR_TYPE,
+ 0, // XPathResult object
+ ec);
+ if (!xpathResult.get())
+ return 0;
+
+ Node* node = xpathResult->iterateNext(ec);
+
+ if (!node || !node->isFrameOwnerElement())
+ return 0;
+ HTMLFrameOwnerElement* frameElement =
+ static_cast<HTMLFrameOwnerElement*>(node);
+ return fromFrame(frameElement->contentFrame());
+}
+
+WebDocument WebFrameImpl::document() const
+{
+ if (!m_frame || !m_frame->document())
+ return WebDocument();
+ return WebDocument(m_frame->document());
+}
+
+void WebFrameImpl::forms(WebVector<WebFormElement>& results) const
+{
+ if (!m_frame)
+ return;
+
+ RefPtr<HTMLCollection> forms = m_frame->document()->forms();
+ size_t formCount = 0;
+ for (size_t i = 0; i < forms->length(); ++i) {
+ Node* node = forms->item(i);
+ if (node && node->isHTMLElement())
+ ++formCount;
+ }
+
+ WebVector<WebFormElement> temp(formCount);
+ for (size_t i = 0; i < formCount; ++i) {
+ Node* node = forms->item(i);
+ // Strange but true, sometimes item can be 0.
+ if (node && node->isHTMLElement())
+ temp[i] = static_cast<HTMLFormElement*>(node);
+ }
+ results.swap(temp);
+}
+
+WebAnimationController* WebFrameImpl::animationController()
+{
+ return &m_animationController;
+}
+
+WebSecurityOrigin WebFrameImpl::securityOrigin() const
+{
+ if (!m_frame || !m_frame->document())
+ return WebSecurityOrigin();
+
+ return WebSecurityOrigin(m_frame->document()->securityOrigin());
+}
+
+void WebFrameImpl::grantUniversalAccess()
+{
+ ASSERT(m_frame && m_frame->document());
+ if (m_frame && m_frame->document())
+ m_frame->document()->securityOrigin()->grantUniversalAccess();
+}
+
+NPObject* WebFrameImpl::windowObject() const
+{
+ if (!m_frame)
+ return 0;
+
+ return m_frame->script()->windowScriptNPObject();
+}
+
+void WebFrameImpl::bindToWindowObject(const WebString& name, NPObject* object)
+{
+ ASSERT(m_frame);
+ if (!m_frame || !m_frame->script()->canExecuteScripts(NotAboutToExecuteScript))
+ return;
+
+ String key = name;
+#if USE(V8)
+ m_frame->script()->bindToWindowObject(m_frame, key, object);
+#else
+ notImplemented();
+#endif
+}
+
+void WebFrameImpl::executeScript(const WebScriptSource& source)
+{
+ m_frame->script()->executeScript(
+ ScriptSourceCode(source.code, source.url, source.startLine));
+}
+
+void WebFrameImpl::executeScriptInIsolatedWorld(
+ int worldId, const WebScriptSource* sourcesIn, unsigned numSources,
+ int extensionGroup)
+{
+ Vector<ScriptSourceCode> sources;
+
+ for (unsigned i = 0; i < numSources; ++i) {
+ sources.append(ScriptSourceCode(
+ sourcesIn[i].code, sourcesIn[i].url, sourcesIn[i].startLine));
+ }
+
+ m_frame->script()->evaluateInIsolatedWorld(worldId, sources, extensionGroup);
+}
+
+void WebFrameImpl::addMessageToConsole(const WebConsoleMessage& message)
+{
+ ASSERT(frame());
+
+ MessageLevel webCoreMessageLevel;
+ switch (message.level) {
+ case WebConsoleMessage::LevelTip:
+ webCoreMessageLevel = TipMessageLevel;
+ break;
+ case WebConsoleMessage::LevelLog:
+ webCoreMessageLevel = LogMessageLevel;
+ break;
+ case WebConsoleMessage::LevelWarning:
+ webCoreMessageLevel = WarningMessageLevel;
+ break;
+ case WebConsoleMessage::LevelError:
+ webCoreMessageLevel = ErrorMessageLevel;
+ break;
+ default:
+ ASSERT_NOT_REACHED();
+ return;
+ }
+
+ frame()->domWindow()->console()->addMessage(
+ OtherMessageSource, LogMessageType, webCoreMessageLevel, message.text,
+ 1, String());
+}
+
+void WebFrameImpl::collectGarbage()
+{
+ if (!m_frame)
+ return;
+ if (!m_frame->settings()->isJavaScriptEnabled())
+ return;
+ // FIXME: Move this to the ScriptController and make it JS neutral.
+#if USE(V8)
+ m_frame->script()->collectGarbage();
+#else
+ notImplemented();
+#endif
+}
+
+#if USE(V8)
+v8::Handle<v8::Value> WebFrameImpl::executeScriptAndReturnValue(
+ const WebScriptSource& source)
+{
+ return m_frame->script()->executeScript(
+ ScriptSourceCode(source.code, source.url, source.startLine)).v8Value();
+}
+
+// Returns the V8 context for this frame, or an empty handle if there is none.
+v8::Local<v8::Context> WebFrameImpl::mainWorldScriptContext() const
+{
+ if (!m_frame)
+ return v8::Local<v8::Context>();
+
+ return V8Proxy::mainWorldContext(m_frame);
+}
+#endif
+
+bool WebFrameImpl::insertStyleText(
+ const WebString& css, const WebString& id) {
+ Document* document = frame()->document();
+ if (!document)
+ return false;
+ Element* documentElement = document->documentElement();
+ if (!documentElement)
+ return false;
+
+ ExceptionCode err = 0;
+
+ if (!id.isEmpty()) {
+ Element* oldElement = document->getElementById(id);
+ if (oldElement) {
+ Node* parent = oldElement->parent();
+ if (!parent)
+ return false;
+ parent->removeChild(oldElement, err);
+ }
+ }
+
+ RefPtr<Element> stylesheet = document->createElement(
+ HTMLNames::styleTag, false);
+ if (!id.isEmpty())
+ stylesheet->setAttribute(HTMLNames::idAttr, id);
+ stylesheet->setTextContent(css, err);
+ ASSERT(!err);
+ Node* first = documentElement->firstChild();
+ bool success = documentElement->insertBefore(stylesheet, first, err);
+ ASSERT(success);
+ return success;
+}
+
+void WebFrameImpl::reload(bool ignoreCache)
+{
+ m_frame->loader()->history()->saveDocumentAndScrollState();
+ m_frame->loader()->reload(ignoreCache);
+}
+
+void WebFrameImpl::loadRequest(const WebURLRequest& request)
+{
+ ASSERT(!request.isNull());
+ const ResourceRequest& resourceRequest = request.toResourceRequest();
+
+ if (resourceRequest.url().protocolIs("javascript")) {
+ loadJavaScriptURL(resourceRequest.url());
+ return;
+ }
+
+ m_frame->loader()->load(resourceRequest, false);
+}
+
+void WebFrameImpl::loadHistoryItem(const WebHistoryItem& item)
+{
+ RefPtr<HistoryItem> historyItem = PassRefPtr<HistoryItem>(item);
+ ASSERT(historyItem.get());
+
+ // If there is no currentItem, which happens when we are navigating in
+ // session history after a crash, we need to manufacture one otherwise WebKit
+ // hoarks. This is probably the wrong thing to do, but it seems to work.
+ RefPtr<HistoryItem> currentItem = m_frame->loader()->history()->currentItem();
+ if (!currentItem) {
+ currentItem = HistoryItem::create();
+ currentItem->setLastVisitWasFailure(true);
+ m_frame->loader()->history()->setCurrentItem(currentItem.get());
+ viewImpl()->setCurrentHistoryItem(currentItem.get());
+ }
+
+ m_frame->loader()->history()->goToItem(
+ historyItem.get(), FrameLoadTypeIndexedBackForward);
+}
+
+void WebFrameImpl::loadData(const WebData& data,
+ const WebString& mimeType,
+ const WebString& textEncoding,
+ const WebURL& baseURL,
+ const WebURL& unreachableURL,
+ bool replace)
+{
+ SubstituteData substData(data, mimeType, textEncoding, unreachableURL);
+ ASSERT(substData.isValid());
+
+ // If we are loading substitute data to replace an existing load, then
+ // inherit all of the properties of that original request. This way,
+ // reload will re-attempt the original request. It is essential that
+ // we only do this when there is an unreachableURL since a non-empty
+ // unreachableURL informs FrameLoader::reload to load unreachableURL
+ // instead of the currently loaded URL.
+ ResourceRequest request;
+ if (replace && !unreachableURL.isEmpty())
+ request = m_frame->loader()->originalRequest();
+ request.setURL(baseURL);
+
+ m_frame->loader()->load(request, substData, false);
+ if (replace) {
+ // Do this to force WebKit to treat the load as replacing the currently
+ // loaded page.
+ m_frame->loader()->setReplacing();
+ }
+}
+
+void WebFrameImpl::loadHTMLString(const WebData& data,
+ const WebURL& baseURL,
+ const WebURL& unreachableURL,
+ bool replace)
+{
+ loadData(data,
+ WebString::fromUTF8("text/html"),
+ WebString::fromUTF8("UTF-8"),
+ baseURL,
+ unreachableURL,
+ replace);
+}
+
+bool WebFrameImpl::isLoading() const
+{
+ if (!m_frame)
+ return false;
+ return m_frame->loader()->isLoading();
+}
+
+void WebFrameImpl::stopLoading()
+{
+ if (!m_frame)
+ return;
+
+ // FIXME: Figure out what we should really do here. It seems like a bug
+ // that FrameLoader::stopLoading doesn't call stopAllLoaders.
+ m_frame->loader()->stopAllLoaders();
+ m_frame->loader()->stopLoading(UnloadEventPolicyNone);
+}
+
+WebDataSource* WebFrameImpl::provisionalDataSource() const
+{
+ FrameLoader* frameLoader = m_frame->loader();
+
+ // We regard the policy document loader as still provisional.
+ DocumentLoader* docLoader = frameLoader->provisionalDocumentLoader();
+ if (!docLoader)
+ docLoader = frameLoader->policyDocumentLoader();
+
+ return DataSourceForDocLoader(docLoader);
+}
+
+WebDataSource* WebFrameImpl::dataSource() const
+{
+ return DataSourceForDocLoader(m_frame->loader()->documentLoader());
+}
+
+WebHistoryItem WebFrameImpl::previousHistoryItem() const
+{
+ // We use the previous item here because documentState (filled-out forms)
+ // only get saved to history when it becomes the previous item. The caller
+ // is expected to query the history item after a navigation occurs, after
+ // the desired history item has become the previous entry.
+ return WebHistoryItem(viewImpl()->previousHistoryItem());
+}
+
+WebHistoryItem WebFrameImpl::currentHistoryItem() const
+{
+ // If we are still loading, then we don't want to clobber the current
+ // history item as this could cause us to lose the scroll position and
+ // document state. However, it is OK for new navigations.
+ if (m_frame->loader()->loadType() == FrameLoadTypeStandard
+ || !m_frame->loader()->activeDocumentLoader()->isLoadingInAPISense())
+ m_frame->loader()->history()->saveDocumentAndScrollState();
+
+ return WebHistoryItem(m_frame->page()->backForwardList()->currentItem());
+}
+
+void WebFrameImpl::enableViewSourceMode(bool enable)
+{
+ if (m_frame)
+ m_frame->setInViewSourceMode(enable);
+}
+
+bool WebFrameImpl::isViewSourceModeEnabled() const
+{
+ if (m_frame)
+ return m_frame->inViewSourceMode();
+
+ return false;
+}
+
+void WebFrameImpl::setReferrerForRequest(
+ WebURLRequest& request, const WebURL& referrerURL) {
+ String referrer;
+ if (referrerURL.isEmpty())
+ referrer = m_frame->loader()->outgoingReferrer();
+ else
+ referrer = referrerURL.spec().utf16();
+ if (SecurityOrigin::shouldHideReferrer(request.url(), referrer))
+ return;
+ request.setHTTPHeaderField(WebString::fromUTF8("Referer"), referrer);
+}
+
+void WebFrameImpl::dispatchWillSendRequest(WebURLRequest& request)
+{
+ ResourceResponse response;
+ m_frame->loader()->client()->dispatchWillSendRequest(
+ 0, 0, request.toMutableResourceRequest(), response);
+}
+
+void WebFrameImpl::commitDocumentData(const char* data, size_t dataLen)
+{
+ DocumentLoader* documentLoader = m_frame->loader()->documentLoader();
+
+ // Set the text encoding. This calls begin() for us. It is safe to call
+ // this multiple times (Mac does: page/mac/WebCoreFrameBridge.mm).
+ bool userChosen = true;
+ String encoding = documentLoader->overrideEncoding();
+ if (encoding.isNull()) {
+ userChosen = false;
+ encoding = documentLoader->response().textEncodingName();
+ }
+ m_frame->loader()->writer()->setEncoding(encoding, userChosen);
+
+ // NOTE: mac only does this if there is a document
+ m_frame->loader()->addData(data, dataLen);
+}
+
+unsigned WebFrameImpl::unloadListenerCount() const
+{
+ return frame()->domWindow()->pendingUnloadEventListeners();
+}
+
+bool WebFrameImpl::isProcessingUserGesture() const
+{
+ return frame()->loader()->isProcessingUserGesture();
+}
+
+bool WebFrameImpl::willSuppressOpenerInNewFrame() const
+{
+ return frame()->loader()->suppressOpenerInNewFrame();
+}
+
+void WebFrameImpl::replaceSelection(const WebString& text)
+{
+ RefPtr<DocumentFragment> fragment = createFragmentFromText(
+ frame()->selection()->toNormalizedRange().get(), text);
+ applyCommand(ReplaceSelectionCommand::create(
+ frame()->document(), fragment.get(), false, true, true));
+}
+
+void WebFrameImpl::insertText(const WebString& text)
+{
+ frame()->editor()->insertText(text, 0);
+}
+
+void WebFrameImpl::setMarkedText(
+ const WebString& text, unsigned location, unsigned length)
+{
+ Editor* editor = frame()->editor();
+
+ editor->confirmComposition(text);
+
+ Vector<CompositionUnderline> decorations;
+ editor->setComposition(text, decorations, location, length);
+}
+
+void WebFrameImpl::unmarkText()
+{
+ frame()->editor()->confirmCompositionWithoutDisturbingSelection();
+}
+
+bool WebFrameImpl::hasMarkedText() const
+{
+ return frame()->editor()->hasComposition();
+}
+
+WebRange WebFrameImpl::markedRange() const
+{
+ return frame()->editor()->compositionRange();
+}
+
+bool WebFrameImpl::executeCommand(const WebString& name)
+{
+ ASSERT(frame());
+
+ if (name.length() <= 2)
+ return false;
+
+ // Since we don't have NSControl, we will convert the format of command
+ // string and call the function on Editor directly.
+ String command = name;
+
+ // Make sure the first letter is upper case.
+ command.replace(0, 1, command.substring(0, 1).upper());
+
+ // Remove the trailing ':' if existing.
+ if (command[command.length() - 1] == UChar(':'))
+ command = command.substring(0, command.length() - 1);
+
+ if (command == "Copy") {
+ WebPluginContainerImpl* pluginContainer = pluginContainerFromFrame(frame());
+ if (pluginContainer) {
+ pluginContainer->copy();
+ return true;
+ }
+ }
+
+ bool rv = true;
+
+ // Specially handling commands that Editor::execCommand does not directly
+ // support.
+ if (command == "DeleteToEndOfParagraph") {
+ Editor* editor = frame()->editor();
+ if (!editor->deleteWithDirection(SelectionController::DirectionForward,
+ ParagraphBoundary,
+ true,
+ false)) {
+ editor->deleteWithDirection(SelectionController::DirectionForward,
+ CharacterGranularity,
+ true,
+ false);
+ }
+ } else if (command == "Indent")
+ frame()->editor()->indent();
+ else if (command == "Outdent")
+ frame()->editor()->outdent();
+ else if (command == "DeleteBackward")
+ rv = frame()->editor()->command(AtomicString("BackwardDelete")).execute();
+ else if (command == "DeleteForward")
+ rv = frame()->editor()->command(AtomicString("ForwardDelete")).execute();
+ else if (command == "AdvanceToNextMisspelling") {
+ // False must be passed here, or the currently selected word will never be
+ // skipped.
+ frame()->editor()->advanceToNextMisspelling(false);
+ } else if (command == "ToggleSpellPanel")
+ frame()->editor()->showSpellingGuessPanel();
+ else
+ rv = frame()->editor()->command(command).execute();
+ return rv;
+}
+
+bool WebFrameImpl::executeCommand(const WebString& name, const WebString& value)
+{
+ ASSERT(frame());
+ String webName = name;
+
+ // moveToBeginningOfDocument and moveToEndfDocument are only handled by WebKit
+ // for editable nodes.
+ if (!frame()->editor()->canEdit() && webName == "moveToBeginningOfDocument")
+ return viewImpl()->propagateScroll(ScrollUp, ScrollByDocument);
+
+ if (!frame()->editor()->canEdit() && webName == "moveToEndOfDocument")
+ return viewImpl()->propagateScroll(ScrollDown, ScrollByDocument);
+
+ return frame()->editor()->command(webName).execute(value);
+}
+
+bool WebFrameImpl::isCommandEnabled(const WebString& name) const
+{
+ ASSERT(frame());
+ return frame()->editor()->command(name).isEnabled();
+}
+
+void WebFrameImpl::enableContinuousSpellChecking(bool enable)
+{
+ if (enable == isContinuousSpellCheckingEnabled())
+ return;
+ frame()->editor()->toggleContinuousSpellChecking();
+}
+
+bool WebFrameImpl::isContinuousSpellCheckingEnabled() const
+{
+ return frame()->editor()->isContinuousSpellCheckingEnabled();
+}
+
+bool WebFrameImpl::hasSelection() const
+{
+ WebPluginContainerImpl* pluginContainer = pluginContainerFromFrame(frame());
+ if (pluginContainer)
+ return pluginContainer->plugin()->hasSelection();
+
+ // frame()->selection()->isNone() never returns true.
+ return (frame()->selection()->start() != frame()->selection()->end());
+}
+
+WebRange WebFrameImpl::selectionRange() const
+{
+ return frame()->selection()->toNormalizedRange();
+}
+
+WebString WebFrameImpl::selectionAsText() const
+{
+ WebPluginContainerImpl* pluginContainer = pluginContainerFromFrame(frame());
+ if (pluginContainer)
+ return pluginContainer->plugin()->selectionAsText();
+
+ RefPtr<Range> range = frame()->selection()->toNormalizedRange();
+ if (!range.get())
+ return WebString();
+
+ String text = range->text();
+#if OS(WINDOWS)
+ replaceNewlinesWithWindowsStyleNewlines(text);
+#endif
+ replaceNBSPWithSpace(text);
+ return text;
+}
+
+WebString WebFrameImpl::selectionAsMarkup() const
+{
+ WebPluginContainerImpl* pluginContainer = pluginContainerFromFrame(frame());
+ if (pluginContainer)
+ return pluginContainer->plugin()->selectionAsMarkup();
+
+ RefPtr<Range> range = frame()->selection()->toNormalizedRange();
+ if (!range.get())
+ return WebString();
+
+ return createMarkup(range.get(), 0);
+}
+
+void WebFrameImpl::selectWordAroundPosition(Frame* frame, VisiblePosition pos)
+{
+ VisibleSelection selection(pos);
+ selection.expandUsingGranularity(WordGranularity);
+
+ if (frame->shouldChangeSelection(selection)) {
+ TextGranularity granularity = selection.isRange() ? WordGranularity : CharacterGranularity;
+ frame->selection()->setSelection(selection, granularity);
+ }
+}
+
+bool WebFrameImpl::selectWordAroundCaret()
+{
+ SelectionController* controller = frame()->selection();
+ ASSERT(!controller->isNone());
+ if (controller->isNone() || controller->isRange())
+ return false;
+ selectWordAroundPosition(frame(), controller->selection().visibleStart());
+ return true;
+}
+
+int WebFrameImpl::printBegin(const WebSize& pageSize, int printerDPI, bool *useBrowserOverlays)
+{
+ ASSERT(!frame()->document()->isFrameSet());
+ // If this is a plugin document, check if the plugin supports its own
+ // printing. If it does, we will delegate all printing to that.
+ WebPluginContainerImpl* pluginContainer = pluginContainerFromFrame(frame());
+ if (pluginContainer && pluginContainer->supportsPaginatedPrint())
+ m_printContext.set(new ChromePluginPrintContext(frame(), printerDPI));
+ else
+ m_printContext.set(new ChromePrintContext(frame()));
+
+ FloatRect rect(0, 0, static_cast<float>(pageSize.width),
+ static_cast<float>(pageSize.height));
+ m_printContext->begin(rect.width());
+ float pageHeight;
+ // We ignore the overlays calculation for now since they are generated in the
+ // browser. pageHeight is actually an output parameter.
+ m_printContext->computePageRects(rect, 0, 0, 1.0, pageHeight);
+ if (useBrowserOverlays)
+ *useBrowserOverlays = m_printContext->shouldUseBrowserOverlays();
+
+ return m_printContext->pageCount();
+}
+
+float WebFrameImpl::getPrintPageShrink(int page)
+{
+ // Ensure correct state.
+ if (!m_printContext.get() || page < 0) {
+ ASSERT_NOT_REACHED();
+ return 0;
+ }
+
+ return m_printContext->getPageShrink(page);
+}
+
+float WebFrameImpl::printPage(int page, WebCanvas* canvas)
+{
+ // Ensure correct state.
+ if (!m_printContext.get() || page < 0 || !frame() || !frame()->document()) {
+ ASSERT_NOT_REACHED();
+ return 0;
+ }
+
+#if OS(WINDOWS) || OS(LINUX) || OS(FREEBSD) || OS(SOLARIS)
+ PlatformContextSkia context(canvas);
+ GraphicsContext spool(&context);
+#elif OS(DARWIN)
+ GraphicsContext spool(canvas);
+ LocalCurrentGraphicsContext localContext(&spool);
+#endif
+
+ return m_printContext->spoolPage(spool, page);
+}
+
+void WebFrameImpl::printEnd()
+{
+ ASSERT(m_printContext.get());
+ if (m_printContext.get())
+ m_printContext->end();
+ m_printContext.clear();
+}
+
+bool WebFrameImpl::isPageBoxVisible(int pageIndex)
+{
+ return frame()->document()->isPageBoxVisible(pageIndex);
+}
+
+void WebFrameImpl::pageSizeAndMarginsInPixels(int pageIndex,
+ WebSize& pageSize,
+ int& marginTop,
+ int& marginRight,
+ int& marginBottom,
+ int& marginLeft)
+{
+ IntSize size(pageSize.width, pageSize.height);
+ frame()->document()->pageSizeAndMarginsInPixels(pageIndex,
+ size,
+ marginTop,
+ marginRight,
+ marginBottom,
+ marginLeft);
+ pageSize = size;
+}
+
+bool WebFrameImpl::find(int identifier,
+ const WebString& searchText,
+ const WebFindOptions& options,
+ bool wrapWithinFrame,
+ WebRect* selectionRect)
+{
+ WebFrameImpl* mainFrameImpl = viewImpl()->mainFrameImpl();
+
+ if (!options.findNext)
+ frame()->page()->unmarkAllTextMatches();
+ else
+ setMarkerActive(m_activeMatch.get(), false); // Active match is changing.
+
+ // Starts the search from the current selection.
+ bool startInSelection = true;
+
+ // If the user has selected something since the last Find operation we want
+ // to start from there. Otherwise, we start searching from where the last Find
+ // operation left off (either a Find or a FindNext operation).
+ VisibleSelection selection(frame()->selection()->selection());
+ bool activeSelection = !selection.isNone();
+ if (!activeSelection && m_activeMatch) {
+ selection = VisibleSelection(m_activeMatch.get());
+ frame()->selection()->setSelection(selection);
+ }
+
+ ASSERT(frame() && frame()->view());
+ bool found = frame()->findString(
+ searchText, options.forward, options.matchCase, wrapWithinFrame,
+ startInSelection);
+ if (found) {
+ // Store which frame was active. This will come in handy later when we
+ // change the active match ordinal below.
+ WebFrameImpl* oldActiveFrame = mainFrameImpl->m_activeMatchFrame;
+ // Set this frame as the active frame (the one with the active highlight).
+ mainFrameImpl->m_activeMatchFrame = this;
+
+ // We found something, so we can now query the selection for its position.
+ VisibleSelection newSelection(frame()->selection()->selection());
+ IntRect currSelectionRect;
+
+ // If we thought we found something, but it couldn't be selected (perhaps
+ // because it was marked -webkit-user-select: none), we can't set it to
+ // be active but we still continue searching. This matches Safari's
+ // behavior, including some oddities when selectable and un-selectable text
+ // are mixed on a page: see https://bugs.webkit.org/show_bug.cgi?id=19127.
+ if (newSelection.isNone() || (newSelection.start() == newSelection.end()))
+ m_activeMatch = 0;
+ else {
+ m_activeMatch = newSelection.toNormalizedRange();
+ currSelectionRect = m_activeMatch->boundingBox();
+ setMarkerActive(m_activeMatch.get(), true); // Active.
+ // WebKit draws the highlighting for all matches.
+ executeCommand(WebString::fromUTF8("Unselect"));
+ }
+
+ // Make sure no node is focused. See http://crbug.com/38700.
+ frame()->document()->setFocusedNode(0);
+
+ if (!options.findNext || activeSelection) {
+ // This is either a Find operation or a Find-next from a new start point
+ // due to a selection, so we set the flag to ask the scoping effort
+ // to find the active rect for us so we can update the ordinal (n of m).
+ m_locatingActiveRect = true;
+ } else {
+ if (oldActiveFrame != this) {
+ // If the active frame has changed it means that we have a multi-frame
+ // page and we just switch to searching in a new frame. Then we just
+ // want to reset the index.
+ if (options.forward)
+ m_activeMatchIndex = 0;
+ else
+ m_activeMatchIndex = m_lastMatchCount - 1;
+ } else {
+ // We are still the active frame, so increment (or decrement) the
+ // |m_activeMatchIndex|, wrapping if needed (on single frame pages).
+ options.forward ? ++m_activeMatchIndex : --m_activeMatchIndex;
+ if (m_activeMatchIndex + 1 > m_lastMatchCount)
+ m_activeMatchIndex = 0;
+ if (m_activeMatchIndex == -1)
+ m_activeMatchIndex = m_lastMatchCount - 1;
+ }
+ if (selectionRect) {
+ WebRect rect = frame()->view()->convertToContainingWindow(currSelectionRect);
+ rect.x -= frameView()->scrollOffset().width();
+ rect.y -= frameView()->scrollOffset().height();
+ *selectionRect = rect;
+
+ reportFindInPageSelection(rect, m_activeMatchIndex + 1, identifier);
+ }
+ }
+ } else {
+ // Nothing was found in this frame.
+ m_activeMatch = 0;
+
+ // Erase all previous tickmarks and highlighting.
+ invalidateArea(InvalidateAll);
+ }
+
+ return found;
+}
+
+void WebFrameImpl::stopFinding(bool clearSelection)
+{
+ if (!clearSelection)
+ setFindEndstateFocusAndSelection();
+ cancelPendingScopingEffort();
+
+ // Remove all markers for matches found and turn off the highlighting.
+ frame()->document()->removeMarkers(DocumentMarker::TextMatch);
+ frame()->setMarkedTextMatchesAreHighlighted(false);
+
+ // Let the frame know that we don't want tickmarks or highlighting anymore.
+ invalidateArea(InvalidateAll);
+}
+
+void WebFrameImpl::scopeStringMatches(int identifier,
+ const WebString& searchText,
+ const WebFindOptions& options,
+ bool reset)
+{
+ if (!shouldScopeMatches(searchText))
+ return;
+
+ WebFrameImpl* mainFrameImpl = viewImpl()->mainFrameImpl();
+
+ if (reset) {
+ // This is a brand new search, so we need to reset everything.
+ // Scoping is just about to begin.
+ m_scopingComplete = false;
+ // Clear highlighting for this frame.
+ if (frame()->markedTextMatchesAreHighlighted())
+ frame()->page()->unmarkAllTextMatches();
+ // Clear the counters from last operation.
+ m_lastMatchCount = 0;
+ m_nextInvalidateAfter = 0;
+
+ m_resumeScopingFromRange = 0;
+
+ mainFrameImpl->m_framesScopingCount++;
+
+ // Now, defer scoping until later to allow find operation to finish quickly.
+ scopeStringMatchesSoon(
+ identifier,
+ searchText,
+ options,
+ false); // false=we just reset, so don't do it again.
+ return;
+ }
+
+ RefPtr<Range> searchRange(rangeOfContents(frame()->document()));
+
+ ExceptionCode ec = 0, ec2 = 0;
+ if (m_resumeScopingFromRange.get()) {
+ // This is a continuation of a scoping operation that timed out and didn't
+ // complete last time around, so we should start from where we left off.
+ searchRange->setStart(m_resumeScopingFromRange->startContainer(),
+ m_resumeScopingFromRange->startOffset(ec2) + 1,
+ ec);
+ if (ec || ec2) {
+ if (ec2) // A non-zero |ec| happens when navigating during search.
+ ASSERT_NOT_REACHED();
+ return;
+ }
+ }
+
+ // This timeout controls how long we scope before releasing control. This
+ // value does not prevent us from running for longer than this, but it is
+ // periodically checked to see if we have exceeded our allocated time.
+ const double maxScopingDuration = 0.1; // seconds
+
+ int matchCount = 0;
+ bool timedOut = false;
+ double startTime = currentTime();
+ do {
+ // Find next occurrence of the search string.
+ // FIXME: (http://b/1088245) This WebKit operation may run for longer
+ // than the timeout value, and is not interruptible as it is currently
+ // written. We may need to rewrite it with interruptibility in mind, or
+ // find an alternative.
+ RefPtr<Range> resultRange(findPlainText(searchRange.get(),
+ searchText,
+ true,
+ options.matchCase));
+ if (resultRange->collapsed(ec)) {
+ if (!resultRange->startContainer()->isInShadowTree())
+ break;
+
+ searchRange = rangeOfContents(frame()->document());
+ searchRange->setStartAfter(
+ resultRange->startContainer()->shadowAncestorNode(), ec);
+ continue;
+ }
+
+ // A non-collapsed result range can in some funky whitespace cases still not
+ // advance the range's start position (4509328). Break to avoid infinite
+ // loop. (This function is based on the implementation of
+ // Frame::markAllMatchesForText, which is where this safeguard comes from).
+ VisiblePosition newStart = endVisiblePosition(resultRange.get(), DOWNSTREAM);
+ if (newStart == startVisiblePosition(searchRange.get(), DOWNSTREAM))
+ break;
+
+ // Only treat the result as a match if it is visible
+ if (frame()->editor()->insideVisibleArea(resultRange.get())) {
+ ++matchCount;
+
+ setStart(searchRange.get(), newStart);
+ Node* shadowTreeRoot = searchRange->shadowTreeRootNode();
+ if (searchRange->collapsed(ec) && shadowTreeRoot)
+ searchRange->setEnd(shadowTreeRoot, shadowTreeRoot->childNodeCount(), ec);
+
+ // Catch a special case where Find found something but doesn't know what
+ // the bounding box for it is. In this case we set the first match we find
+ // as the active rect.
+ IntRect resultBounds = resultRange->boundingBox();
+ IntRect activeSelectionRect;
+ if (m_locatingActiveRect) {
+ activeSelectionRect = m_activeMatch.get() ?
+ m_activeMatch->boundingBox() : resultBounds;
+ }
+
+ // If the Find function found a match it will have stored where the
+ // match was found in m_activeSelectionRect on the current frame. If we
+ // find this rect during scoping it means we have found the active
+ // tickmark.
+ bool foundActiveMatch = false;
+ if (m_locatingActiveRect && (activeSelectionRect == resultBounds)) {
+ // We have found the active tickmark frame.
+ mainFrameImpl->m_activeMatchFrame = this;
+ foundActiveMatch = true;
+ // We also know which tickmark is active now.
+ m_activeMatchIndex = matchCount - 1;
+ // To stop looking for the active tickmark, we set this flag.
+ m_locatingActiveRect = false;
+
+ // Notify browser of new location for the selected rectangle.
+ resultBounds.move(-frameView()->scrollOffset().width(),
+ -frameView()->scrollOffset().height());
+ reportFindInPageSelection(
+ frame()->view()->convertToContainingWindow(resultBounds),
+ m_activeMatchIndex + 1,
+ identifier);
+ }
+
+ addMarker(resultRange.get(), foundActiveMatch);
+ }
+
+ m_resumeScopingFromRange = resultRange;
+ timedOut = (currentTime() - startTime) >= maxScopingDuration;
+ } while (!timedOut);
+
+ // Remember what we search for last time, so we can skip searching if more
+ // letters are added to the search string (and last outcome was 0).
+ m_lastSearchString = searchText;
+
+ if (matchCount > 0) {
+ frame()->setMarkedTextMatchesAreHighlighted(true);
+
+ m_lastMatchCount += matchCount;
+
+ // Let the mainframe know how much we found during this pass.
+ mainFrameImpl->increaseMatchCount(matchCount, identifier);
+ }
+
+ if (timedOut) {
+ // If we found anything during this pass, we should redraw. However, we
+ // don't want to spam too much if the page is extremely long, so if we
+ // reach a certain point we start throttling the redraw requests.
+ if (matchCount > 0)
+ invalidateIfNecessary();
+
+ // Scoping effort ran out of time, lets ask for another time-slice.
+ scopeStringMatchesSoon(
+ identifier,
+ searchText,
+ options,
+ false); // don't reset.
+ return; // Done for now, resume work later.
+ }
+
+ // This frame has no further scoping left, so it is done. Other frames might,
+ // of course, continue to scope matches.
+ m_scopingComplete = true;
+ mainFrameImpl->m_framesScopingCount--;
+
+ // If this is the last frame to finish scoping we need to trigger the final
+ // update to be sent.
+ if (!mainFrameImpl->m_framesScopingCount)
+ mainFrameImpl->increaseMatchCount(0, identifier);
+
+ // This frame is done, so show any scrollbar tickmarks we haven't drawn yet.
+ invalidateArea(InvalidateScrollbar);
+}
+
+void WebFrameImpl::cancelPendingScopingEffort()
+{
+ deleteAllValues(m_deferredScopingWork);
+ m_deferredScopingWork.clear();
+
+ m_activeMatchIndex = -1;
+}
+
+void WebFrameImpl::increaseMatchCount(int count, int identifier)
+{
+ // This function should only be called on the mainframe.
+ ASSERT(!parent());
+
+ m_totalMatchCount += count;
+
+ // Update the UI with the latest findings.
+ if (client())
+ client()->reportFindInPageMatchCount(identifier, m_totalMatchCount, !m_framesScopingCount);
+}
+
+void WebFrameImpl::reportFindInPageSelection(const WebRect& selectionRect,
+ int activeMatchOrdinal,
+ int identifier)
+{
+ // Update the UI with the latest selection rect.
+ if (client())
+ client()->reportFindInPageSelection(identifier, ordinalOfFirstMatchForFrame(this) + activeMatchOrdinal, selectionRect);
+}
+
+void WebFrameImpl::resetMatchCount()
+{
+ m_totalMatchCount = 0;
+ m_framesScopingCount = 0;
+}
+
+WebString WebFrameImpl::contentAsText(size_t maxChars) const
+{
+ if (!m_frame)
+ return WebString();
+
+ Vector<UChar> text;
+ frameContentAsPlainText(maxChars, m_frame, &text);
+ return String::adopt(text);
+}
+
+WebString WebFrameImpl::contentAsMarkup() const
+{
+ return createFullMarkup(m_frame->document());
+}
+
+WebString WebFrameImpl::renderTreeAsText() const
+{
+ return externalRepresentation(m_frame);
+}
+
+WebString WebFrameImpl::counterValueForElementById(const WebString& id) const
+{
+ if (!m_frame)
+ return WebString();
+
+ Element* element = m_frame->document()->getElementById(id);
+ if (!element)
+ return WebString();
+
+ return counterValueForElement(element);
+}
+
+int WebFrameImpl::pageNumberForElementById(const WebString& id,
+ float pageWidthInPixels,
+ float pageHeightInPixels) const
+{
+ if (!m_frame)
+ return -1;
+
+ Element* element = m_frame->document()->getElementById(id);
+ if (!element)
+ return -1;
+
+ FloatSize pageSize(pageWidthInPixels, pageHeightInPixels);
+ return PrintContext::pageNumberForElement(element, pageSize);
+}
+
+WebRect WebFrameImpl::selectionBoundsRect() const
+{
+ if (hasSelection())
+ return IntRect(frame()->selectionBounds(false));
+
+ return WebRect();
+}
+
+// WebFrameImpl public ---------------------------------------------------------
+
+PassRefPtr<WebFrameImpl> WebFrameImpl::create(WebFrameClient* client)
+{
+ return adoptRef(new WebFrameImpl(client));
+}
+
+WebFrameImpl::WebFrameImpl(WebFrameClient* client)
+ : m_frameLoaderClient(this)
+ , m_client(client)
+ , m_activeMatchFrame(0)
+ , m_activeMatchIndex(-1)
+ , m_locatingActiveRect(false)
+ , m_resumeScopingFromRange(0)
+ , m_lastMatchCount(-1)
+ , m_totalMatchCount(-1)
+ , m_framesScopingCount(-1)
+ , m_scopingComplete(false)
+ , m_nextInvalidateAfter(0)
+ , m_animationController(this)
+{
+ ChromiumBridge::incrementStatsCounter(webFrameActiveCount);
+ frameCount++;
+}
+
+WebFrameImpl::~WebFrameImpl()
+{
+ ChromiumBridge::decrementStatsCounter(webFrameActiveCount);
+ frameCount--;
+
+ cancelPendingScopingEffort();
+ clearPasswordListeners();
+}
+
+void WebFrameImpl::initializeAsMainFrame(WebViewImpl* webViewImpl)
+{
+ RefPtr<Frame> frame = Frame::create(webViewImpl->page(), 0, &m_frameLoaderClient);
+ m_frame = frame.get();
+
+ // Add reference on behalf of FrameLoader. See comments in
+ // WebFrameLoaderClient::frameLoaderDestroyed for more info.
+ ref();
+
+ // We must call init() after m_frame is assigned because it is referenced
+ // during init().
+ m_frame->init();
+}
+
+PassRefPtr<Frame> WebFrameImpl::createChildFrame(
+ const FrameLoadRequest& request, HTMLFrameOwnerElement* ownerElement)
+{
+ RefPtr<WebFrameImpl> webframe(adoptRef(new WebFrameImpl(m_client)));
+
+ // Add an extra ref on behalf of the Frame/FrameLoader, which references the
+ // WebFrame via the FrameLoaderClient interface. See the comment at the top
+ // of this file for more info.
+ webframe->ref();
+
+ RefPtr<Frame> childFrame = Frame::create(
+ m_frame->page(), ownerElement, &webframe->m_frameLoaderClient);
+ webframe->m_frame = childFrame.get();
+
+ childFrame->tree()->setName(request.frameName());
+
+ m_frame->tree()->appendChild(childFrame);
+
+ // Frame::init() can trigger onload event in the parent frame,
+ // which may detach this frame and trigger a null-pointer access
+ // in FrameTree::removeChild. Move init() after appendChild call
+ // so that webframe->mFrame is in the tree before triggering
+ // onload event handler.
+ // Because the event handler may set webframe->mFrame to null,
+ // it is necessary to check the value after calling init() and
+ // return without loading URL.
+ // (b:791612)
+ childFrame->init(); // create an empty document
+ if (!childFrame->tree()->parent())
+ return 0;
+
+ m_frame->loader()->loadURLIntoChildFrame(
+ request.resourceRequest().url(),
+ request.resourceRequest().httpReferrer(),
+ childFrame.get());
+
+ // A synchronous navigation (about:blank) would have already processed
+ // onload, so it is possible for the frame to have already been destroyed by
+ // script in the page.
+ if (!childFrame->tree()->parent())
+ return 0;
+
+ return childFrame.release();
+}
+
+void WebFrameImpl::layout()
+{
+ // layout this frame
+ FrameView* view = m_frame->view();
+ if (view)
+ view->layoutIfNeededRecursive();
+}
+
+void WebFrameImpl::paintWithContext(GraphicsContext& gc, const WebRect& rect)
+{
+ IntRect dirtyRect(rect);
+ gc.save();
+ if (m_frame->document() && frameView()) {
+ gc.clip(dirtyRect);
+ frameView()->paint(&gc, dirtyRect);
+ m_frame->page()->inspectorController()->drawNodeHighlight(gc);
+ } else
+ gc.fillRect(dirtyRect, Color::white, DeviceColorSpace);
+ gc.restore();
+}
+
+void WebFrameImpl::paint(WebCanvas* canvas, const WebRect& rect)
+{
+ if (rect.isEmpty())
+ return;
+#if WEBKIT_USING_CG
+ GraphicsContext gc(canvas);
+ LocalCurrentGraphicsContext localContext(&gc);
+#elif WEBKIT_USING_SKIA
+ PlatformContextSkia context(canvas);
+
+ // PlatformGraphicsContext is actually a pointer to PlatformContextSkia
+ GraphicsContext gc(reinterpret_cast<PlatformGraphicsContext*>(&context));
+#else
+ notImplemented();
+#endif
+ paintWithContext(gc, rect);
+}
+
+void WebFrameImpl::createFrameView()
+{
+ ASSERT(m_frame); // If m_frame doesn't exist, we probably didn't init properly.
+
+ Page* page = m_frame->page();
+ ASSERT(page);
+ ASSERT(page->mainFrame());
+
+ bool isMainFrame = m_frame == page->mainFrame();
+ if (isMainFrame && m_frame->view())
+ m_frame->view()->setParentVisible(false);
+
+ m_frame->setView(0);
+
+ WebViewImpl* webView = viewImpl();
+
+ RefPtr<FrameView> view;
+ if (isMainFrame)
+ view = FrameView::create(m_frame, webView->size());
+ else
+ view = FrameView::create(m_frame);
+
+ m_frame->setView(view);
+
+ if (webView->isTransparent())
+ view->setTransparent(true);
+
+ // FIXME: The Mac code has a comment about this possibly being unnecessary.
+ // See installInFrame in WebCoreFrameBridge.mm
+ if (m_frame->ownerRenderer())
+ m_frame->ownerRenderer()->setWidget(view.get());
+
+ if (HTMLFrameOwnerElement* owner = m_frame->ownerElement())
+ view->setCanHaveScrollbars(owner->scrollingMode() != ScrollbarAlwaysOff);
+
+ if (isMainFrame)
+ view->setParentVisible(true);
+}
+
+WebFrameImpl* WebFrameImpl::fromFrame(Frame* frame)
+{
+ if (!frame)
+ return 0;
+
+ return static_cast<FrameLoaderClientImpl*>(frame->loader()->client())->webFrame();
+}
+
+WebFrameImpl* WebFrameImpl::fromFrameOwnerElement(Element* element)
+{
+ if (!element
+ || !element->isFrameOwnerElement()
+ || (!element->hasTagName(HTMLNames::iframeTag)
+ && !element->hasTagName(HTMLNames::frameTag)))
+ return 0;
+
+ HTMLFrameOwnerElement* frameElement =
+ static_cast<HTMLFrameOwnerElement*>(element);
+ return fromFrame(frameElement->contentFrame());
+}
+
+WebViewImpl* WebFrameImpl::viewImpl() const
+{
+ if (!m_frame)
+ return 0;
+
+ return WebViewImpl::fromPage(m_frame->page());
+}
+
+WebDataSourceImpl* WebFrameImpl::dataSourceImpl() const
+{
+ return static_cast<WebDataSourceImpl*>(dataSource());
+}
+
+WebDataSourceImpl* WebFrameImpl::provisionalDataSourceImpl() const
+{
+ return static_cast<WebDataSourceImpl*>(provisionalDataSource());
+}
+
+void WebFrameImpl::setFindEndstateFocusAndSelection()
+{
+ WebFrameImpl* mainFrameImpl = viewImpl()->mainFrameImpl();
+
+ if (this == mainFrameImpl->activeMatchFrame() && m_activeMatch.get()) {
+ // If the user has set the selection since the match was found, we
+ // don't focus anything.
+ VisibleSelection selection(frame()->selection()->selection());
+ if (!selection.isNone())
+ return;
+
+ // Try to find the first focusable node up the chain, which will, for
+ // example, focus links if we have found text within the link.
+ Node* node = m_activeMatch->firstNode();
+ while (node && !node->isFocusable() && node != frame()->document())
+ node = node->parent();
+
+ if (node && node != frame()->document()) {
+ // Found a focusable parent node. Set focus to it.
+ frame()->document()->setFocusedNode(node);
+ return;
+ }
+
+ // Iterate over all the nodes in the range until we find a focusable node.
+ // This, for example, sets focus to the first link if you search for
+ // text and text that is within one or more links.
+ node = m_activeMatch->firstNode();
+ while (node && node != m_activeMatch->pastLastNode()) {
+ if (node->isFocusable()) {
+ frame()->document()->setFocusedNode(node);
+ return;
+ }
+ node = node->traverseNextNode();
+ }
+
+ // No node related to the active match was focusable, so set the
+ // active match as the selection (so that when you end the Find session,
+ // you'll have the last thing you found highlighted) and make sure that
+ // we have nothing focused (otherwise you might have text selected but
+ // a link focused, which is weird).
+ frame()->selection()->setSelection(m_activeMatch.get());
+ frame()->document()->setFocusedNode(0);
+ }
+}
+
+void WebFrameImpl::didFail(const ResourceError& error, bool wasProvisional)
+{
+ if (!client())
+ return;
+ WebURLError webError = error;
+ if (wasProvisional)
+ client()->didFailProvisionalLoad(this, webError);
+ else
+ client()->didFailLoad(this, webError);
+}
+
+void WebFrameImpl::setCanHaveScrollbars(bool canHaveScrollbars)
+{
+ m_frame->view()->setCanHaveScrollbars(canHaveScrollbars);
+}
+
+bool WebFrameImpl::registerPasswordListener(
+ WebInputElement inputElement,
+ WebPasswordAutocompleteListener* listener)
+{
+ RefPtr<HTMLInputElement> element(inputElement.unwrap<HTMLInputElement>());
+ if (!m_passwordListeners.add(element, listener).second) {
+ delete listener;
+ return false;
+ }
+ return true;
+}
+
+void WebFrameImpl::notifiyPasswordListenerOfAutocomplete(
+ const WebInputElement& inputElement)
+{
+ const HTMLInputElement* element = inputElement.constUnwrap<HTMLInputElement>();
+ WebPasswordAutocompleteListener* listener = getPasswordListener(element);
+ // Password listeners need to autocomplete other fields that depend on the
+ // input element with autofill suggestions.
+ if (listener)
+ listener->performInlineAutocomplete(element->value(), false, false);
+}
+
+WebPasswordAutocompleteListener* WebFrameImpl::getPasswordListener(
+ const HTMLInputElement* inputElement)
+{
+ return m_passwordListeners.get(RefPtr<HTMLInputElement>(const_cast<HTMLInputElement*>(inputElement)));
+}
+
+// WebFrameImpl private --------------------------------------------------------
+
+void WebFrameImpl::closing()
+{
+ m_frame = 0;
+}
+
+void WebFrameImpl::invalidateArea(AreaToInvalidate area)
+{
+ ASSERT(frame() && frame()->view());
+ FrameView* view = frame()->view();
+
+ if ((area & InvalidateAll) == InvalidateAll)
+ view->invalidateRect(view->frameRect());
+ else {
+ if ((area & InvalidateContentArea) == InvalidateContentArea) {
+ IntRect contentArea(
+ view->x(), view->y(), view->visibleWidth(), view->visibleHeight());
+ IntRect frameRect = view->frameRect();
+ contentArea.move(-frameRect.topLeft().x(), -frameRect.topLeft().y());
+ view->invalidateRect(contentArea);
+ }
+
+ if ((area & InvalidateScrollbar) == InvalidateScrollbar) {
+ // Invalidate the vertical scroll bar region for the view.
+ IntRect scrollBarVert(
+ view->x() + view->visibleWidth(), view->y(),
+ ScrollbarTheme::nativeTheme()->scrollbarThickness(),
+ view->visibleHeight());
+ IntRect frameRect = view->frameRect();
+ scrollBarVert.move(-frameRect.topLeft().x(), -frameRect.topLeft().y());
+ view->invalidateRect(scrollBarVert);
+ }
+ }
+}
+
+void WebFrameImpl::addMarker(Range* range, bool activeMatch)
+{
+ // Use a TextIterator to visit the potentially multiple nodes the range
+ // covers.
+ TextIterator markedText(range);
+ for (; !markedText.atEnd(); markedText.advance()) {
+ RefPtr<Range> textPiece = markedText.range();
+ int exception = 0;
+
+ DocumentMarker marker = {
+ DocumentMarker::TextMatch,
+ textPiece->startOffset(exception),
+ textPiece->endOffset(exception),
+ "",
+ activeMatch
+ };
+
+ if (marker.endOffset > marker.startOffset) {
+ // Find the node to add a marker to and add it.
+ Node* node = textPiece->startContainer(exception);
+ frame()->document()->addMarker(node, marker);
+
+ // Rendered rects for markers in WebKit are not populated until each time
+ // the markers are painted. However, we need it to happen sooner, because
+ // the whole purpose of tickmarks on the scrollbar is to show where
+ // matches off-screen are (that haven't been painted yet).
+ Vector<DocumentMarker> markers = frame()->document()->markersForNode(node);
+ frame()->document()->setRenderedRectForMarker(
+ textPiece->startContainer(exception),
+ markers[markers.size() - 1],
+ range->boundingBox());
+ }
+ }
+}
+
+void WebFrameImpl::setMarkerActive(Range* range, bool active)
+{
+ WebCore::ExceptionCode ec;
+ if (!range || range->collapsed(ec))
+ return;
+
+ frame()->document()->setMarkersActive(range, active);
+}
+
+int WebFrameImpl::ordinalOfFirstMatchForFrame(WebFrameImpl* frame) const
+{
+ int ordinal = 0;
+ WebFrameImpl* mainFrameImpl = viewImpl()->mainFrameImpl();
+ // Iterate from the main frame up to (but not including) |frame| and
+ // add up the number of matches found so far.
+ for (WebFrameImpl* it = mainFrameImpl;
+ it != frame;
+ it = static_cast<WebFrameImpl*>(it->traverseNext(true))) {
+ if (it->m_lastMatchCount > 0)
+ ordinal += it->m_lastMatchCount;
+ }
+ return ordinal;
+}
+
+bool WebFrameImpl::shouldScopeMatches(const String& searchText)
+{
+ // Don't scope if we can't find a frame or a view or if the frame is not visible.
+ // The user may have closed the tab/application, so abort.
+ if (!frame() || !frame()->view() || !hasVisibleContent())
+ return false;
+
+ ASSERT(frame()->document() && frame()->view());
+
+ // If the frame completed the scoping operation and found 0 matches the last
+ // time it was searched, then we don't have to search it again if the user is
+ // just adding to the search string or sending the same search string again.
+ if (m_scopingComplete && !m_lastSearchString.isEmpty() && !m_lastMatchCount) {
+ // Check to see if the search string prefixes match.
+ String previousSearchPrefix =
+ searchText.substring(0, m_lastSearchString.length());
+
+ if (previousSearchPrefix == m_lastSearchString)
+ return false; // Don't search this frame, it will be fruitless.
+ }
+
+ return true;
+}
+
+void WebFrameImpl::scopeStringMatchesSoon(int identifier, const WebString& searchText,
+ const WebFindOptions& options, bool reset)
+{
+ m_deferredScopingWork.append(new DeferredScopeStringMatches(
+ this, identifier, searchText, options, reset));
+}
+
+void WebFrameImpl::callScopeStringMatches(DeferredScopeStringMatches* caller,
+ int identifier, const WebString& searchText,
+ const WebFindOptions& options, bool reset)
+{
+ m_deferredScopingWork.remove(m_deferredScopingWork.find(caller));
+
+ scopeStringMatches(identifier, searchText, options, reset);
+
+ // This needs to happen last since searchText is passed by reference.
+ delete caller;
+}
+
+void WebFrameImpl::invalidateIfNecessary()
+{
+ if (m_lastMatchCount > m_nextInvalidateAfter) {
+ // FIXME: (http://b/1088165) Optimize the drawing of the tickmarks and
+ // remove this. This calculation sets a milestone for when next to
+ // invalidate the scrollbar and the content area. We do this so that we
+ // don't spend too much time drawing the scrollbar over and over again.
+ // Basically, up until the first 500 matches there is no throttle.
+ // After the first 500 matches, we set set the milestone further and
+ // further out (750, 1125, 1688, 2K, 3K).
+ static const int startSlowingDownAfter = 500;
+ static const int slowdown = 750;
+ int i = (m_lastMatchCount / startSlowingDownAfter);
+ m_nextInvalidateAfter += i * slowdown;
+
+ invalidateArea(InvalidateScrollbar);
+ }
+}
+
+void WebFrameImpl::clearPasswordListeners()
+{
+ deleteAllValues(m_passwordListeners);
+ m_passwordListeners.clear();
+}
+
+void WebFrameImpl::loadJavaScriptURL(const KURL& url)
+{
+ // This is copied from ScriptController::executeIfJavaScriptURL.
+ // Unfortunately, we cannot just use that method since it is private, and
+ // it also doesn't quite behave as we require it to for bookmarklets. The
+ // key difference is that we need to suppress loading the string result
+ // from evaluating the JS URL if executing the JS URL resulted in a
+ // location change. We also allow a JS URL to be loaded even if scripts on
+ // the page are otherwise disabled.
+
+ if (!m_frame->document() || !m_frame->page())
+ return;
+
+ String script = decodeURLEscapeSequences(url.string().substring(strlen("javascript:")));
+ ScriptValue result = m_frame->script()->executeScript(script, true);
+
+ String scriptResult;
+ if (!result.getString(scriptResult))
+ return;
+
+ if (!m_frame->redirectScheduler()->locationChangePending())
+ m_frame->loader()->writer()->replaceDocument(scriptResult);
+}
+
+} // namespace WebKit