jsdomwindowbase.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 *  Copyright (C) 2000 Harri Porten ([e-mail])
 *  Copyright (C) 2006 Jon Shier ([e-mail])
 *  Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reseved.
 *  Copyright (C) 2006 Alexey Proskuryakov ([e-mail])
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
 *  USA
 */

#include "config.h"
#include "JSDOMWindowBase.h"

#include "CString.h"
#include "Console.h"
#include "DOMTimer.h"
#include "DOMWindow.h"
#include "Element.h"
#include "EventListener.h"
#include "ExceptionCode.h"
#include "FloatRect.h"
#include "Frame.h"
#include "FrameLoadRequest.h"
#include "FrameLoader.h"
#include "FrameTree.h"
#include "GCController.h"
#include "HTMLDocument.h"
#include "InspectorController.h"
#include "JSAudioConstructor.h"
#include "JSDOMWindowCustom.h"
#include "JSEvent.h"
#include "JSEventListener.h"
#include "JSHTMLCollection.h"
#include "JSImageConstructor.h"
#include "JSMessageChannelConstructor.h"
#include "JSNode.h"
#include "JSWebKitCSSMatrixConstructor.h"
#include "JSOptionConstructor.h"
#include "JSWebKitPointConstructor.h"
#include "JSWorkerConstructor.h"
#include "JSXMLHttpRequestConstructor.h"
#include "JSXSLTProcessorConstructor.h"
#include "Logging.h"
#include "MediaPlayer.h"
#include "Page.h"
#include "PlatformScreen.h"
#include "PluginInfoStore.h"
#include "RenderView.h"
#include "ScheduledAction.h"
#include "ScriptController.h"
#include "SecurityOrigin.h"
#include "Settings.h"
#include "WindowFeatures.h"
#include "htmlediting.h"
#include <runtime/Error.h>
#include <runtime/JSLock.h>
#include <wtf/AlwaysInline.h>
#include <wtf/MathExtras.h>

using namespace JSC;

static JSValuePtr windowProtoFuncOpen(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr windowProtoFuncShowModalDialog(ExecState*, JSObject*, JSValuePtr, const ArgList&);
static JSValuePtr windowProtoFuncNotImplemented(ExecState*, JSObject*, JSValuePtr, const ArgList&);

static JSValuePtr jsDOMWindowBaseCrypto(ExecState*, const Identifier&, const PropertySlot&);
static JSValuePtr jsDOMWindowBaseEvent(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseEvent(ExecState*, JSObject*, JSValuePtr);

// Constructors
static JSValuePtr jsDOMWindowBaseAudio(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseAudio(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseImage(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseImage(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseMessageChannel(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseMessageChannel(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseWorker(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseWorker(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseOption(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseOption(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseWebKitCSSMatrix(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseWebKitCSSMatrix(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseWebKitPoint(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseWebKitPoint(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseXMLHttpRequest(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseXMLHttpRequest(ExecState*, JSObject*, JSValuePtr);
static JSValuePtr jsDOMWindowBaseXSLTProcessor(ExecState*, const Identifier&, const PropertySlot&);
static void setJSDOMWindowBaseXSLTProcessor(ExecState*, JSObject*, JSValuePtr);

#include "JSDOMWindowBase.lut.h"

namespace WebCore {

////////////////////// JSDOMWindowBase Object ////////////////////////

const ClassInfo JSDOMWindowBase::s_info = { "Window", 0, &JSDOMWindowBaseTable, 0 };

/*
@begin JSDOMWindowBaseTable
# -- Functions --
  open                          windowProtoFuncOpen                         DontDelete|Function 3
  showModalDialog               windowProtoFuncShowModalDialog              DontDelete|Function 1
# Not implemented
  captureEvents                 windowProtoFuncNotImplemented               DontDelete|Function 0
  releaseEvents                 windowProtoFuncNotImplemented               DontDelete|Function 0
# -- Attributes --
  crypto                        jsDOMWindowBaseCrypto                       DontDelete|ReadOnly
  event                         jsDOMWindowBaseEvent                        DontDelete
# -- Constructors --
  Audio                         jsDOMWindowBaseAudio                        DontDelete
  Image                         jsDOMWindowBaseImage                        DontDelete
  MessageChannel                jsDOMWindowBaseMessageChannel               DontDelete
  Option                        jsDOMWindowBaseOption                       DontDelete
  WebKitCSSMatrix               jsDOMWindowBaseWebKitCSSMatrix              DontDelete
  WebKitPoint                   jsDOMWindowBaseWebKitPoint                  DontDelete
  Worker                        jsDOMWindowBaseWorker                       DontDelete
  XMLHttpRequest                jsDOMWindowBaseXMLHttpRequest               DontDelete
  XSLTProcessor                 jsDOMWindowBaseXSLTProcessor                DontDelete
@end
*/

JSDOMWindowBase::JSDOMWindowBaseData::JSDOMWindowBaseData(PassRefPtr<DOMWindow> window, JSDOMWindowShell* shell)
    : impl(window)
    , returnValueSlot(0)
    , shell(shell)
{
}

JSDOMWindowBase::JSDOMWindowBase(PassRefPtr<Structure> structure, PassRefPtr<DOMWindow> window, JSDOMWindowShell* shell)
    : JSDOMGlobalObject(structure, new JSDOMWindowBaseData(window, shell), shell)
{
    GlobalPropertyInfo staticGlobals[] = {
        GlobalPropertyInfo(Identifier(globalExec(), "document"), jsNull(), DontDelete | ReadOnly),
        GlobalPropertyInfo(Identifier(globalExec(), "window"), d()->shell, DontDelete | ReadOnly)
    };
    
    addStaticGlobals(staticGlobals, sizeof(staticGlobals) / sizeof(GlobalPropertyInfo));
}

void JSDOMWindowBase::updateDocument()
{
    ASSERT(d()->impl->document());
    ExecState* exec = globalExec();
    symbolTablePutWithAttributes(Identifier(exec, "document"), toJS(exec, d()->impl->document()), DontDelete | ReadOnly);
}

JSDOMWindowBase::~JSDOMWindowBase()
{
    if (d()->impl->frame())
        d()->impl->frame()->script()->clearFormerWindow(asJSDOMWindow(this));
}

ScriptExecutionContext* JSDOMWindowBase::scriptExecutionContext() const
{
    return d()->impl->document();
}

static bool allowPopUp(ExecState* exec)
{
    Frame* frame = asJSDOMWindow(exec->dynamicGlobalObject())->impl()->frame();

    ASSERT(frame);
    if (frame->script()->processingUserGesture())
        return true;
    Settings* settings = frame->settings();
    return settings && settings->JavaScriptCanOpenWindowsAutomatically();
}

static HashMap<String, String> parseModalDialogFeatures(const String& featuresArg)
{
    HashMap<String, String> map;

    Vector<String> features;
    featuresArg.split(';', features);
    Vector<String>::const_iterator end = features.end();
    for (Vector<String>::const_iterator it = features.begin(); it != end; ++it) {
        String s = *it;
        int pos = s.find('=');
        int colonPos = s.find(':');
        if (pos >= 0 && colonPos >= 0)
            continue; // ignore any strings that have both = and :
        if (pos < 0)
            pos = colonPos;
        if (pos < 0) {
            // null string for value means key without value
            map.set(s.stripWhiteSpace().lower(), String());
        } else {
            String key = s.left(pos).stripWhiteSpace().lower();
            String val = s.substring(pos + 1).stripWhiteSpace().lower();
            int spacePos = val.find(' ');
            if (spacePos != -1)
                val = val.left(spacePos);
            map.set(key, val);
        }
    }

    return map;
}

static Frame* createWindow(ExecState* exec, Frame* openerFrame, const String& url,
    const String& frameName, const WindowFeatures& windowFeatures, JSValuePtr dialogArgs)
{
    Frame* activeFrame = asJSDOMWindow(exec->dynamicGlobalObject())->impl()->frame();
    ASSERT(activeFrame);

    ResourceRequest request;

    request.setHTTPReferrer(activeFrame->loader()->outgoingReferrer());
    FrameLoader::addHTTPOriginIfNeeded(request, activeFrame->loader()->outgoingOrigin());
    FrameLoadRequest frameRequest(request, frameName);

    // FIXME: It's much better for client API if a new window starts with a URL, here where we
    // know what URL we are going to open. Unfortunately, this code passes the empty string
    // for the URL, but there's a reason for that. Before loading we have to set up the opener,
    // openedByDOM, and dialogArguments values. Also, to decide whether to use the URL we currently
    // do an allowsAccessFrom call using the window we create, which can't be done before creating it.
    // We'd have to resolve all those issues to pass the URL instead of "".

    bool created;
    // We pass in the opener frame here so it can be used for looking up the frame name, in case the active frame
    // is different from the opener frame, and the name references a frame relative to the opener frame, for example
    // "_self" or "_parent".
    Frame* newFrame = activeFrame->loader()->createWindow(openerFrame->loader(), frameRequest, windowFeatures, created);
    if (!newFrame)
        return 0;

    newFrame->loader()->setOpener(openerFrame);
    newFrame->loader()->setOpenedByDOM();

    JSDOMWindow* newWindow = toJSDOMWindow(newFrame);

    if (dialogArgs)
        newWindow->putDirect(Identifier(exec, "dialogArguments"), dialogArgs);

    if (!protocolIs(url, "javascript") || newWindow->allowsAccessFrom(exec)) {
        KURL completedURL = url.isEmpty() ? KURL("") : activeFrame->document()->completeURL(url);
        bool userGesture = activeFrame->script()->processingUserGesture();

        if (created)
            newFrame->loader()->changeLocation(completedURL, activeFrame->loader()->outgoingReferrer(), false, false, userGesture);
        else if (!url.isEmpty())
            newFrame->loader()->scheduleLocationChange(completedURL.string(), activeFrame->loader()->outgoingReferrer(), !activeFrame->script()->anyPageIsProcessingUserGesture(), false, userGesture);
    }

    return newFrame;
}

static bool canShowModalDialog(const Frame* frame)
{
    if (!frame)
        return false;

    Page* page = frame->page();
    if (!page)
        return false;

    return page->chrome()->canRunModal();
}

static bool canShowModalDialogNow(const Frame* frame)
{
    if (!frame)
        return false;

    Page* page = frame->page();
    if (!page)
        return false;

    return page->chrome()->canRunModalNow();
}

static JSValuePtr showModalDialog(ExecState* exec, Frame* frame, const String& url, JSValuePtr dialogArgs, const String& featureArgs)
{
    if (!canShowModalDialogNow(frame) || !allowPopUp(exec))
        return jsUndefined();

    const HashMap<String, String> features = parseModalDialogFeatures(featureArgs);

    const bool trusted = false;

    // The following features from Microsoft's documentation are not implemented:
    // - default font settings
    // - width, height, left, and top specified in units other than "px"
    // - edge (sunken or raised, default is raised)
    // - dialogHide: trusted && boolFeature(features, "dialoghide"), makes dialog hide when you print
    // - help: boolFeature(features, "help", true), makes help icon appear in dialog (what does it do on Windows?)
    // - unadorned: trusted && boolFeature(features, "unadorned");

    if (!frame)
        return jsUndefined();

    FloatRect screenRect = screenAvailableRect(frame->view());

    WindowFeatures wargs;
    wargs.width = WindowFeatures::floatFeature(features, "dialogwidth", 100, screenRect.width(), 620); // default here came from frame size of dialog in MacIE
    wargs.widthSet = true;
    wargs.height = WindowFeatures::floatFeature(features, "dialogheight", 100, screenRect.height(), 450); // default here came from frame size of dialog in MacIE
    wargs.heightSet = true;