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nsDOMWindowUtils.cpp
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nsDOMWindowUtils.cpp
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsIDocShell.h"
#include "nsPresContext.h"
#include "nsDOMClassInfoID.h"
#include "nsDOMError.h"
#include "nsIDOMNSEvent.h"
#include "nsIPrivateDOMEvent.h"
#include "nsDOMWindowUtils.h"
#include "nsQueryContentEventResult.h"
#include "nsGlobalWindow.h"
#include "nsIDocument.h"
#include "nsFocusManager.h"
#include "nsEventStateManager.h"
#include "nsFrameManager.h"
#include "nsRefreshDriver.h"
#include "nsDOMTouchEvent.h"
#include "nsIDOMTouchEvent.h"
#include "nsIScrollableFrame.h"
#include "nsContentUtils.h"
#include "nsLayoutUtils.h"
#include "nsIFrame.h"
#include "nsIWidget.h"
#include "nsGUIEvent.h"
#include "nsIParser.h"
#include "nsJSEnvironment.h"
#include "nsJSUtils.h"
#include "nsIViewManager.h"
#include "nsIDOMHTMLCanvasElement.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "nsLayoutUtils.h"
#include "nsComputedDOMStyle.h"
#include "nsIPresShell.h"
#include "nsStyleAnimation.h"
#include "nsCSSProps.h"
#include "nsDOMFile.h"
#include "BasicLayers.h"
#if defined(MOZ_X11) && defined(MOZ_WIDGET_GTK2)
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#endif
#include "Layers.h"
#include "nsIIOService.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/indexedDB/FileInfo.h"
#include "mozilla/dom/indexedDB/IndexedDatabaseManager.h"
#include "sampler.h"
using namespace mozilla::dom;
using namespace mozilla::layers;
using namespace mozilla::widget;
static bool IsUniversalXPConnectCapable()
{
bool hasCap = false;
nsresult rv = nsContentUtils::GetSecurityManager()->
IsCapabilityEnabled("UniversalXPConnect", &hasCap);
NS_ENSURE_SUCCESS(rv, false);
return hasCap;
}
DOMCI_DATA(WindowUtils, nsDOMWindowUtils)
NS_IMPL_CYCLE_COLLECTION_CLASS(nsDOMWindowUtils)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsDOMWindowUtils)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mWindow)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsDOMWindowUtils)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mWindow,
nsIScriptGlobalObject)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDOMWindowUtils)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMWindowUtils)
NS_INTERFACE_MAP_ENTRY(nsIDOMWindowUtils)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(WindowUtils)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDOMWindowUtils)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDOMWindowUtils)
nsDOMWindowUtils::nsDOMWindowUtils(nsGlobalWindow *aWindow)
: mWindow(aWindow)
{
NS_ASSERTION(mWindow->IsOuterWindow(), "How did that happen?");
}
nsDOMWindowUtils::~nsDOMWindowUtils()
{
}
nsIPresShell*
nsDOMWindowUtils::GetPresShell()
{
if (!mWindow)
return nsnull;
nsIDocShell *docShell = mWindow->GetDocShell();
if (!docShell)
return nsnull;
nsCOMPtr<nsIPresShell> presShell;
docShell->GetPresShell(getter_AddRefs(presShell));
return presShell;
}
nsPresContext*
nsDOMWindowUtils::GetPresContext()
{
if (!mWindow)
return nsnull;
nsIDocShell *docShell = mWindow->GetDocShell();
if (!docShell)
return nsnull;
nsRefPtr<nsPresContext> presContext;
docShell->GetPresContext(getter_AddRefs(presContext));
return presContext;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetImageAnimationMode(PRUint16 *aMode)
{
NS_ENSURE_ARG_POINTER(aMode);
*aMode = 0;
nsPresContext* presContext = GetPresContext();
if (presContext) {
*aMode = presContext->ImageAnimationMode();
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsDOMWindowUtils::SetImageAnimationMode(PRUint16 aMode)
{
nsPresContext* presContext = GetPresContext();
if (presContext) {
presContext->SetImageAnimationMode(aMode);
return NS_OK;
}
return NS_ERROR_NOT_AVAILABLE;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetDocCharsetIsForced(bool *aIsForced)
{
*aIsForced = false;
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
if (mWindow) {
nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
*aIsForced = doc &&
doc->GetDocumentCharacterSetSource() >= kCharsetFromParentForced;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetDocumentMetadata(const nsAString& aName,
nsAString& aValue)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
if (mWindow) {
nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
if (doc) {
nsCOMPtr<nsIAtom> name = do_GetAtom(aName);
doc->GetHeaderData(name, aValue);
return NS_OK;
}
}
aValue.Truncate();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::Redraw(PRUint32 aCount, PRUint32 *aDurationOut)
{
if (aCount == 0)
aCount = 1;
if (nsIPresShell* presShell = GetPresShell()) {
nsIFrame *rootFrame = presShell->GetRootFrame();
if (rootFrame) {
nsRect r(nsPoint(0, 0), rootFrame->GetSize());
PRIntervalTime iStart = PR_IntervalNow();
for (PRUint32 i = 0; i < aCount; i++)
rootFrame->InvalidateWithFlags(r, nsIFrame::INVALIDATE_IMMEDIATE);
#if defined(MOZ_X11) && defined(MOZ_WIDGET_GTK2)
XSync(GDK_DISPLAY(), False);
#endif
*aDurationOut = PR_IntervalToMilliseconds(PR_IntervalNow() - iStart);
return NS_OK;
}
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDOMWindowUtils::SetCSSViewport(float aWidthPx, float aHeightPx)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
if (!(aWidthPx >= 0.0 && aHeightPx >= 0.0)) {
return NS_ERROR_ILLEGAL_VALUE;
}
nsIPresShell* presShell = GetPresShell();
if (!presShell) {
return NS_ERROR_FAILURE;
}
nscoord width = nsPresContext::CSSPixelsToAppUnits(aWidthPx);
nscoord height = nsPresContext::CSSPixelsToAppUnits(aHeightPx);
presShell->ResizeReflowOverride(width, height);
return NS_OK;
}
static void DestroyNsRect(void* aObject, nsIAtom* aPropertyName,
void* aPropertyValue, void* aData)
{
nsRect* rect = static_cast<nsRect*>(aPropertyValue);
delete rect;
}
NS_IMETHODIMP
nsDOMWindowUtils::SetDisplayPortForElement(float aXPx, float aYPx,
float aWidthPx, float aHeightPx,
nsIDOMElement* aElement)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsIPresShell* presShell = GetPresShell();
if (!presShell) {
return NS_ERROR_FAILURE;
}
nsRect displayport(nsPresContext::CSSPixelsToAppUnits(aXPx),
nsPresContext::CSSPixelsToAppUnits(aYPx),
nsPresContext::CSSPixelsToAppUnits(aWidthPx),
nsPresContext::CSSPixelsToAppUnits(aHeightPx));
if (!aElement) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
if (!content) {
return NS_ERROR_INVALID_ARG;
}
nsRect lastDisplayPort;
if (nsLayoutUtils::GetDisplayPort(content, &lastDisplayPort) &&
displayport.IsEqualInterior(lastDisplayPort)) {
return NS_OK;
}
content->SetProperty(nsGkAtoms::DisplayPort, new nsRect(displayport),
DestroyNsRect);
nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
if (rootScrollFrame) {
if (content == rootScrollFrame->GetContent()) {
// We are setting a root displayport for a document.
// The pres shell needs a special flag set.
presShell->SetIgnoreViewportScrolling(true);
// The root document currently has a widget, but we might end up
// painting content inside the displayport but outside the widget
// bounds. This ensures the document's view honors invalidations
// within the displayport.
nsPresContext* presContext = GetPresContext();
if (presContext && presContext->IsRoot()) {
nsIFrame* rootFrame = presShell->GetRootFrame();
nsIView* view = rootFrame->GetView();
if (view) {
view->SetInvalidationDimensions(&displayport);
}
}
}
}
if (presShell) {
nsIFrame* rootFrame = presShell->FrameManager()->GetRootFrame();
if (rootFrame) {
nsIContent* rootContent =
rootScrollFrame ? rootScrollFrame->GetContent() : nsnull;
nsRect rootDisplayport;
bool usingDisplayport = rootContent &&
nsLayoutUtils::GetDisplayPort(rootContent, &rootDisplayport);
rootFrame->InvalidateWithFlags(
usingDisplayport ? rootDisplayport : rootFrame->GetVisualOverflowRect(),
nsIFrame::INVALIDATE_NO_THEBES_LAYERS);
// Send empty paint transaction in order to release retained layers
if (displayport.IsEmpty()) {
nsCOMPtr<nsIWidget> widget = GetWidget();
if (widget) {
bool isRetainingManager;
LayerManager* manager = widget->GetLayerManager(&isRetainingManager);
if (isRetainingManager) {
manager->BeginTransaction();
nsLayoutUtils::PaintFrame(nsnull, rootFrame, nsRegion(), NS_RGB(255, 255, 255),
nsLayoutUtils::PAINT_WIDGET_LAYERS |
nsLayoutUtils::PAINT_EXISTING_TRANSACTION);
}
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SetResolution(float aXResolution, float aYResolution)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsIPresShell* presShell = GetPresShell();
return presShell ? presShell->SetResolution(aXResolution, aYResolution)
: NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEvent(const nsAString& aType,
float aX,
float aY,
PRInt32 aButton,
PRInt32 aClickCount,
PRInt32 aModifiers,
bool aIgnoreRootScrollFrame)
{
return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, false);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEventToWindow(const nsAString& aType,
float aX,
float aY,
PRInt32 aButton,
PRInt32 aClickCount,
PRInt32 aModifiers,
bool aIgnoreRootScrollFrame)
{
return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, true);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEventCommon(const nsAString& aType,
float aX,
float aY,
PRInt32 aButton,
PRInt32 aClickCount,
PRInt32 aModifiers,
bool aIgnoreRootScrollFrame,
bool aToWindow)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsPoint offset;
nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
if (!widget)
return NS_ERROR_FAILURE;
PRInt32 msg;
bool contextMenuKey = false;
if (aType.EqualsLiteral("mousedown"))
msg = NS_MOUSE_BUTTON_DOWN;
else if (aType.EqualsLiteral("mouseup"))
msg = NS_MOUSE_BUTTON_UP;
else if (aType.EqualsLiteral("mousemove"))
msg = NS_MOUSE_MOVE;
else if (aType.EqualsLiteral("mouseover"))
msg = NS_MOUSE_ENTER;
else if (aType.EqualsLiteral("mouseout"))
msg = NS_MOUSE_EXIT;
else if (aType.EqualsLiteral("contextmenu")) {
msg = NS_CONTEXTMENU;
contextMenuKey = (aButton == 0);
} else
return NS_ERROR_FAILURE;
nsMouseEvent event(true, msg, widget, nsMouseEvent::eReal,
contextMenuKey ?
nsMouseEvent::eContextMenuKey : nsMouseEvent::eNormal);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? true : false;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? true : false;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? true : false;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? true : false;
event.button = aButton;
event.widget = widget;
event.clickCount = aClickCount;
event.time = PR_IntervalNow();
event.flags |= NS_EVENT_FLAG_SYNTHETIC_TEST_EVENT;
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_FAILURE;
PRInt32 appPerDev = presContext->AppUnitsPerDevPixel();
event.refPoint.x =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aX) + offset.x,
appPerDev);
event.refPoint.y =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aY) + offset.y,
appPerDev);
event.ignoreRootScrollFrame = aIgnoreRootScrollFrame;
nsEventStatus status;
if (aToWindow) {
nsCOMPtr<nsIPresShell> presShell = presContext->PresShell();
if (!presShell)
return NS_ERROR_FAILURE;
nsIViewManager* viewManager = presShell->GetViewManager();
if (!viewManager)
return NS_ERROR_FAILURE;
nsIView* view = viewManager->GetRootView();
if (!view)
return NS_ERROR_FAILURE;
status = nsEventStatus_eIgnore;
return presShell->HandleEvent(view->GetFrame(), &event, false, &status);
}
return widget->DispatchEvent(&event, status);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendMouseScrollEvent(const nsAString& aType,
float aX,
float aY,
PRInt32 aButton,
PRInt32 aScrollFlags,
PRInt32 aDelta,
PRInt32 aModifiers)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsPoint offset;
nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
if (!widget)
return NS_ERROR_NULL_POINTER;
PRInt32 msg;
if (aType.EqualsLiteral("DOMMouseScroll"))
msg = NS_MOUSE_SCROLL;
else if (aType.EqualsLiteral("MozMousePixelScroll"))
msg = NS_MOUSE_PIXEL_SCROLL;
else
return NS_ERROR_UNEXPECTED;
nsMouseScrollEvent event(true, msg, widget);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? true : false;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? true : false;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? true : false;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? true : false;
event.button = aButton;
event.widget = widget;
event.delta = aDelta;
event.scrollFlags = aScrollFlags;
event.time = PR_IntervalNow();
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_FAILURE;
PRInt32 appPerDev = presContext->AppUnitsPerDevPixel();
event.refPoint.x =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aX) + offset.x,
appPerDev);
event.refPoint.y =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aY) + offset.y,
appPerDev);
nsEventStatus status;
return widget->DispatchEvent(&event, status);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendTouchEvent(const nsAString& aType,
PRUint32 *aIdentifiers,
PRInt32 *aXs,
PRInt32 *aYs,
PRUint32 *aRxs,
PRUint32 *aRys,
float *aRotationAngles,
float *aForces,
PRUint32 aCount,
PRInt32 aModifiers,
bool aIgnoreRootScrollFrame,
bool *aPreventDefault)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsPoint offset;
nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
if (!widget) {
return NS_ERROR_NULL_POINTER;
}
PRInt32 msg;
if (aType.EqualsLiteral("touchstart")) {
msg = NS_TOUCH_START;
} else if (aType.EqualsLiteral("touchmove")) {
msg = NS_TOUCH_MOVE;
} else if (aType.EqualsLiteral("touchend")) {
msg = NS_TOUCH_END;
} else if (aType.EqualsLiteral("touchcancel")) {
msg = NS_TOUCH_CANCEL;
} else {
return NS_ERROR_UNEXPECTED;
}
nsTouchEvent event(true, msg, widget);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? true : false;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? true : false;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? true : false;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? true : false;
event.widget = widget;
event.time = PR_Now();
nsPresContext* presContext = GetPresContext();
if (!presContext) {
return NS_ERROR_FAILURE;
}
event.touches.SetCapacity(aCount);
PRInt32 appPerDev = presContext->AppUnitsPerDevPixel();
for (PRUint32 i = 0; i < aCount; ++i) {
nsIntPoint pt(0, 0);
pt.x =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aXs[i]) + offset.x,
appPerDev);
pt.y =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aYs[i]) + offset.y,
appPerDev);
nsCOMPtr<nsIDOMTouch> t(new nsDOMTouch(aIdentifiers[i],
pt,
nsIntPoint(aRxs[i], aRys[i]),
aRotationAngles[i],
aForces[i]));
event.touches.AppendElement(t);
}
nsEventStatus status;
nsresult rv = widget->DispatchEvent(&event, status);
*aPreventDefault = (status == nsEventStatus_eConsumeNoDefault);
return rv;
}
NS_IMETHODIMP
nsDOMWindowUtils::SendKeyEvent(const nsAString& aType,
PRInt32 aKeyCode,
PRInt32 aCharCode,
PRInt32 aModifiers,
bool aPreventDefault,
bool* aDefaultActionTaken)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
PRInt32 msg;
if (aType.EqualsLiteral("keydown"))
msg = NS_KEY_DOWN;
else if (aType.EqualsLiteral("keyup"))
msg = NS_KEY_UP;
else if (aType.EqualsLiteral("keypress"))
msg = NS_KEY_PRESS;
else
return NS_ERROR_FAILURE;
nsKeyEvent event(true, msg, widget);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? true : false;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? true : false;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? true : false;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? true : false;
event.keyCode = aKeyCode;
event.charCode = aCharCode;
event.refPoint.x = event.refPoint.y = 0;
event.time = PR_IntervalNow();
if (aPreventDefault) {
event.flags |= NS_EVENT_FLAG_NO_DEFAULT;
}
nsEventStatus status;
nsresult rv = widget->DispatchEvent(&event, status);
NS_ENSURE_SUCCESS(rv, rv);
*aDefaultActionTaken = (status != nsEventStatus_eConsumeNoDefault);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SendNativeKeyEvent(PRInt32 aNativeKeyboardLayout,
PRInt32 aNativeKeyCode,
PRInt32 aModifiers,
const nsAString& aCharacters,
const nsAString& aUnmodifiedCharacters)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
return widget->SynthesizeNativeKeyEvent(aNativeKeyboardLayout, aNativeKeyCode,
aModifiers, aCharacters, aUnmodifiedCharacters);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendNativeMouseEvent(PRInt32 aScreenX,
PRInt32 aScreenY,
PRInt32 aNativeMessage,
PRInt32 aModifierFlags,
nsIDOMElement* aElement)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsCOMPtr<nsIWidget> widget = GetWidgetForElement(aElement);
if (!widget)
return NS_ERROR_FAILURE;
return widget->SynthesizeNativeMouseEvent(nsIntPoint(aScreenX, aScreenY),
aNativeMessage, aModifierFlags);
}
NS_IMETHODIMP
nsDOMWindowUtils::ActivateNativeMenuItemAt(const nsAString& indexString)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
return widget->ActivateNativeMenuItemAt(indexString);
}
NS_IMETHODIMP
nsDOMWindowUtils::ForceUpdateNativeMenuAt(const nsAString& indexString)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
return widget->ForceUpdateNativeMenuAt(indexString);
}
nsIWidget*
nsDOMWindowUtils::GetWidget(nsPoint* aOffset)
{
if (mWindow) {
nsIDocShell *docShell = mWindow->GetDocShell();
if (docShell) {
nsCOMPtr<nsIPresShell> presShell;
docShell->GetPresShell(getter_AddRefs(presShell));
if (presShell) {
nsIFrame* frame = presShell->GetRootFrame();
if (frame)
return frame->GetView()->GetNearestWidget(aOffset);
}
}
}
return nsnull;
}
nsIWidget*
nsDOMWindowUtils::GetWidgetForElement(nsIDOMElement* aElement)
{
if (!aElement)
return GetWidget();
nsCOMPtr<nsIContent> content = do_QueryInterface(aElement);
nsIDocument* doc = content->GetCurrentDoc();
nsIPresShell* presShell = doc ? doc->GetShell() : nsnull;
if (presShell) {
nsIFrame* frame = content->GetPrimaryFrame();
if (!frame) {
frame = presShell->GetRootFrame();
}
if (frame)
return frame->GetNearestWidget();
}
return nsnull;
}
NS_IMETHODIMP
nsDOMWindowUtils::Focus(nsIDOMElement* aElement)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
if (fm) {
if (aElement)
fm->SetFocus(aElement, 0);
else
fm->ClearFocus(mWindow);
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GarbageCollect(nsICycleCollectorListener *aListener,
PRInt32 aExtraForgetSkippableCalls)
{
SAMPLE_LABEL("GC", "GarbageCollect");
// Always permit this in debug builds.
#ifndef DEBUG
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
#endif
nsJSContext::GarbageCollectNow(js::gcreason::DOM_UTILS);
nsJSContext::CycleCollectNow(aListener, aExtraForgetSkippableCalls);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::CycleCollect(nsICycleCollectorListener *aListener,
PRInt32 aExtraForgetSkippableCalls)
{
// Always permit this in debug builds.
#ifndef DEBUG
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
#endif
nsJSContext::CycleCollectNow(aListener, aExtraForgetSkippableCalls);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SendSimpleGestureEvent(const nsAString& aType,
float aX,
float aY,
PRUint32 aDirection,
PRFloat64 aDelta,
PRInt32 aModifiers)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the widget to send the event to
nsPoint offset;
nsCOMPtr<nsIWidget> widget = GetWidget(&offset);
if (!widget)
return NS_ERROR_FAILURE;
PRInt32 msg;
if (aType.EqualsLiteral("MozSwipeGesture"))
msg = NS_SIMPLE_GESTURE_SWIPE;
else if (aType.EqualsLiteral("MozMagnifyGestureStart"))
msg = NS_SIMPLE_GESTURE_MAGNIFY_START;
else if (aType.EqualsLiteral("MozMagnifyGestureUpdate"))
msg = NS_SIMPLE_GESTURE_MAGNIFY_UPDATE;
else if (aType.EqualsLiteral("MozMagnifyGesture"))
msg = NS_SIMPLE_GESTURE_MAGNIFY;
else if (aType.EqualsLiteral("MozRotateGestureStart"))
msg = NS_SIMPLE_GESTURE_ROTATE_START;
else if (aType.EqualsLiteral("MozRotateGestureUpdate"))
msg = NS_SIMPLE_GESTURE_ROTATE_UPDATE;
else if (aType.EqualsLiteral("MozRotateGesture"))
msg = NS_SIMPLE_GESTURE_ROTATE;
else if (aType.EqualsLiteral("MozTapGesture"))
msg = NS_SIMPLE_GESTURE_TAP;
else if (aType.EqualsLiteral("MozPressTapGesture"))
msg = NS_SIMPLE_GESTURE_PRESSTAP;
else
return NS_ERROR_FAILURE;
nsSimpleGestureEvent event(true, msg, widget, aDirection, aDelta);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? true : false;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? true : false;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? true : false;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? true : false;
event.time = PR_IntervalNow();
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_FAILURE;
PRInt32 appPerDev = presContext->AppUnitsPerDevPixel();
event.refPoint.x =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aX) + offset.x,
appPerDev);
event.refPoint.y =
NSAppUnitsToIntPixels(nsPresContext::CSSPixelsToAppUnits(aY) + offset.y,
appPerDev);
nsEventStatus status;
return widget->DispatchEvent(&event, status);
}
NS_IMETHODIMP
nsDOMWindowUtils::ElementFromPoint(float aX, float aY,
bool aIgnoreRootScrollFrame,
bool aFlushLayout,
nsIDOMElement** aReturn)
{
nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
NS_ENSURE_STATE(doc);
return doc->ElementFromPointHelper(aX, aY, aIgnoreRootScrollFrame, aFlushLayout,
aReturn);
}
NS_IMETHODIMP
nsDOMWindowUtils::NodesFromRect(float aX, float aY,
float aTopSize, float aRightSize,
float aBottomSize, float aLeftSize,
bool aIgnoreRootScrollFrame,
bool aFlushLayout,
nsIDOMNodeList** aReturn)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
NS_ENSURE_STATE(doc);
return doc->NodesFromRectHelper(aX, aY, aTopSize, aRightSize, aBottomSize, aLeftSize,
aIgnoreRootScrollFrame, aFlushLayout, aReturn);
}
static already_AddRefed<gfxImageSurface>
CanvasToImageSurface(nsIDOMHTMLCanvasElement* aCanvas)
{
nsCOMPtr<nsINode> node = do_QueryInterface(aCanvas);
if (!node) {
return nsnull;
}
NS_ABORT_IF_FALSE(node->IsElement(),
"An nsINode that implements nsIDOMHTMLCanvasElement should "
"be an element.");
nsLayoutUtils::SurfaceFromElementResult result =
nsLayoutUtils::SurfaceFromElement(node->AsElement(),
nsLayoutUtils::SFE_WANT_IMAGE_SURFACE);
return static_cast<gfxImageSurface*>(result.mSurface.forget().get());
}
NS_IMETHODIMP
nsDOMWindowUtils::CompareCanvases(nsIDOMHTMLCanvasElement *aCanvas1,
nsIDOMHTMLCanvasElement *aCanvas2,
PRUint32* aMaxDifference,
PRUint32* retVal)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
if (aCanvas1 == nsnull ||
aCanvas2 == nsnull ||
retVal == nsnull)
return NS_ERROR_FAILURE;
nsRefPtr<gfxImageSurface> img1 = CanvasToImageSurface(aCanvas1);
nsRefPtr<gfxImageSurface> img2 = CanvasToImageSurface(aCanvas2);
if (img1 == nsnull || img2 == nsnull ||
img1->GetSize() != img2->GetSize() ||
img1->Stride() != img2->Stride())
return NS_ERROR_FAILURE;
int v;
gfxIntSize size = img1->GetSize();
PRUint32 stride = img1->Stride();
// we can optimize for the common all-pass case
if (stride == (PRUint32) size.width * 4) {
v = memcmp(img1->Data(), img2->Data(), size.width * size.height * 4);
if (v == 0) {
if (aMaxDifference)
*aMaxDifference = 0;
*retVal = 0;
return NS_OK;
}
}
PRUint32 dc = 0;
PRUint32 different = 0;
for (int j = 0; j < size.height; j++) {
unsigned char *p1 = img1->Data() + j*stride;
unsigned char *p2 = img2->Data() + j*stride;
v = memcmp(p1, p2, stride);
if (v) {
for (int i = 0; i < size.width; i++) {