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gecko-dev/dom/base/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 "nsDOMClassInfo.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 "nsIScrollableFrame.h"
#include "nsContentUtils.h"
#include "nsLayoutUtils.h"
#include "nsIFrame.h"
#include "nsIWidget.h"
#include "nsGUIEvent.h"
#include "nsIParser.h"
#include "nsJSEnvironment.h"
#include "nsIViewManager.h"
#include "nsIDOMHTMLCanvasElement.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "nsLayoutUtils.h"
#include "nsComputedDOMStyle.h"
#include "nsIViewObserver.h"
#include "nsIPresShell.h"
#include "nsStyleAnimation.h"
#include "nsCSSProps.h"
#if defined(MOZ_X11) && defined(MOZ_WIDGET_GTK2)
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#endif
#include "jsobj.h"
#include "Layers.h"
#include "mozilla/dom/Element.h"
using namespace mozilla::dom;
using namespace mozilla::layers;
static PRBool IsUniversalXPConnectCapable()
{
PRBool hasCap = PR_FALSE;
nsresult rv = nsContentUtils::GetSecurityManager()->
IsCapabilityEnabled("UniversalXPConnect", &hasCap);
NS_ENSURE_SUCCESS(rv, PR_FALSE);
return hasCap;
}
DOMCI_DATA(WindowUtils, nsDOMWindowUtils)
NS_INTERFACE_MAP_BEGIN(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_ADDREF(nsDOMWindowUtils)
NS_IMPL_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(PRBool *aIsForced)
{
*aIsForced = PR_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(PR_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);
}
}
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,
PRBool aIgnoreRootScrollFrame)
{
return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, PR_FALSE);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEventToWindow(const nsAString& aType,
float aX,
float aY,
PRInt32 aButton,
PRInt32 aClickCount,
PRInt32 aModifiers,
PRBool aIgnoreRootScrollFrame)
{
return SendMouseEventCommon(aType, aX, aY, aButton, aClickCount, aModifiers,
aIgnoreRootScrollFrame, PR_TRUE);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendMouseEventCommon(const nsAString& aType,
float aX,
float aY,
PRInt32 aButton,
PRInt32 aClickCount,
PRInt32 aModifiers,
PRBool aIgnoreRootScrollFrame,
PRBool 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;
PRBool contextMenuKey = PR_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(PR_TRUE, msg, widget, nsMouseEvent::eReal,
contextMenuKey ?
nsMouseEvent::eContextMenuKey : nsMouseEvent::eNormal);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? PR_TRUE : PR_FALSE;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? PR_TRUE : PR_FALSE;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? PR_TRUE : PR_FALSE;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? PR_TRUE : PR_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) {
nsIPresShell* presShell = presContext->PresShell();
if (!presShell)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIViewObserver> vo = do_QueryInterface(presShell);
if (!vo)
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 vo->HandleEvent(view, &event, PR_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(PR_TRUE, msg, widget);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? PR_TRUE : PR_FALSE;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? PR_TRUE : PR_FALSE;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? PR_TRUE : PR_FALSE;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? PR_TRUE : PR_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::SendKeyEvent(const nsAString& aType,
PRInt32 aKeyCode,
PRInt32 aCharCode,
PRInt32 aModifiers,
PRBool aPreventDefault,
PRBool* 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(PR_TRUE, msg, widget);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? PR_TRUE : PR_FALSE;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? PR_TRUE : PR_FALSE;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? PR_TRUE : PR_FALSE;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? PR_TRUE : PR_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)
{
// Always permit this in debug builds.
#ifndef DEBUG
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
#endif
nsJSContext::GarbageCollectNow();
nsJSContext::CycleCollectNow(aListener);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::ProcessUpdates()
{
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_UNEXPECTED;
nsIPresShell* shell = presContext->GetPresShell();
if (!shell)
return NS_ERROR_UNEXPECTED;
nsIViewManager *viewManager = shell->GetViewManager();
if (!viewManager)
return NS_ERROR_UNEXPECTED;
nsIViewManager::UpdateViewBatch batch;
batch.BeginUpdateViewBatch(viewManager);
batch.EndUpdateViewBatch(NS_VMREFRESH_IMMEDIATE);
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(PR_TRUE, msg, widget, aDirection, aDelta);
event.isShift = (aModifiers & nsIDOMNSEvent::SHIFT_MASK) ? PR_TRUE : PR_FALSE;
event.isControl = (aModifiers & nsIDOMNSEvent::CONTROL_MASK) ? PR_TRUE : PR_FALSE;
event.isAlt = (aModifiers & nsIDOMNSEvent::ALT_MASK) ? PR_TRUE : PR_FALSE;
event.isMeta = (aModifiers & nsIDOMNSEvent::META_MASK) ? PR_TRUE : PR_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,
PRBool aIgnoreRootScrollFrame,
PRBool 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,
PRBool aIgnoreRootScrollFrame,
PRBool aFlushLayout,
nsIDOMNodeList** aReturn)
{
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 *canvas)
{
nsLayoutUtils::SurfaceFromElementResult result =
nsLayoutUtils::SurfaceFromElement(canvas,
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++) {
if (*(PRUint32*) p1 != *(PRUint32*) p2) {
different++;
dc = NS_MAX((PRUint32)abs(p1[0] - p2[0]), dc);
dc = NS_MAX((PRUint32)abs(p1[1] - p2[1]), dc);
dc = NS_MAX((PRUint32)abs(p1[2] - p2[2]), dc);
dc = NS_MAX((PRUint32)abs(p1[3] - p2[3]), dc);
}
p1 += 4;
p2 += 4;
}
}
}
if (aMaxDifference)
*aMaxDifference = dc;
*retVal = different;
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetIsMozAfterPaintPending(PRBool *aResult)
{
*aResult = PR_FALSE;
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_OK;
*aResult = presContext->IsDOMPaintEventPending();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::ClearMozAfterPaintEvents()
{
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_OK;
presContext->ClearMozAfterPaintEvents();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::DisableNonTestMouseEvents(PRBool aDisable)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
NS_ENSURE_TRUE(mWindow, NS_ERROR_FAILURE);
nsIDocShell *docShell = mWindow->GetDocShell();
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
nsCOMPtr<nsIPresShell> presShell;
docShell->GetPresShell(getter_AddRefs(presShell));
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
presShell->DisableNonTestMouseEvents(aDisable);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SuppressEventHandling(PRBool aSuppress)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
if (aSuppress) {
doc->SuppressEventHandling();
} else {
doc->UnsuppressEventHandlingAndFireEvents(PR_TRUE);
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetScrollXY(PRBool aFlushLayout, PRInt32* aScrollX, PRInt32* aScrollY)
{
nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
NS_ENSURE_STATE(doc);
if (aFlushLayout) {
doc->FlushPendingNotifications(Flush_Layout);
}
nsPoint scrollPos(0,0);
nsIPresShell *presShell = doc->GetShell();
if (presShell) {
nsIScrollableFrame* sf = presShell->GetRootScrollFrameAsScrollable();
if (sf) {
scrollPos = sf->GetScrollPosition();
}
}
*aScrollX = nsPresContext::AppUnitsToIntCSSPixels(scrollPos.x);
*aScrollY = nsPresContext::AppUnitsToIntCSSPixels(scrollPos.y);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetIMEIsOpen(PRBool *aState)
{
NS_ENSURE_ARG_POINTER(aState);
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
// Open state should not be available when IME is not enabled.
IMEContext context;
nsresult rv = widget->GetInputMode(context);
NS_ENSURE_SUCCESS(rv, rv);
if (context.mStatus != nsIWidget::IME_STATUS_ENABLED)
return NS_ERROR_NOT_AVAILABLE;
return widget->GetIMEOpenState(aState);
}
NS_IMETHODIMP
nsDOMWindowUtils::GetIMEStatus(PRUint32 *aState)
{
NS_ENSURE_ARG_POINTER(aState);
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
IMEContext context;
nsresult rv = widget->GetInputMode(context);
NS_ENSURE_SUCCESS(rv, rv);
*aState = context.mStatus;
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetFocusedInputType(char** aType)
{
NS_ENSURE_ARG_POINTER(aType);
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget) {
return NS_ERROR_FAILURE;
}
IMEContext context;
nsresult rv = widget->GetInputMode(context);
NS_ENSURE_SUCCESS(rv, rv);
*aType = ToNewCString(context.mHTMLInputType);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::FindElementWithViewId(nsViewID aID,
nsIDOMElement** aResult)
{
if (aID == FrameMetrics::ROOT_SCROLL_ID) {
nsPresContext* presContext = GetPresContext();
if (!presContext) {
return NS_ERROR_NOT_AVAILABLE;
}
nsIDocument* document = presContext->Document();
mozilla::dom::Element* rootElement = document->GetRootElement();
if (!rootElement) {
return NS_ERROR_NOT_AVAILABLE;
}
CallQueryInterface(rootElement, aResult);
return NS_OK;
}
nsRefPtr<nsIContent> content = nsLayoutUtils::FindContentFor(aID);
return content ? CallQueryInterface(content, aResult) : NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetScreenPixelsPerCSSPixel(float* aScreenPixels)
{
*aScreenPixels = 1;
if (!nsContentUtils::IsCallerTrustedForRead())
return NS_ERROR_DOM_SECURITY_ERR;
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_OK;
*aScreenPixels = float(nsPresContext::AppUnitsPerCSSPixel())/
presContext->AppUnitsPerDevPixel();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::DispatchDOMEventViaPresShell(nsIDOMNode* aTarget,
nsIDOMEvent* aEvent,
PRBool aTrusted,
PRBool* aRetVal)
{
if (!nsContentUtils::IsCallerTrustedForRead()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsPresContext* presContext = GetPresContext();
NS_ENSURE_STATE(presContext);
nsCOMPtr<nsIPresShell> shell = presContext->GetPresShell();
NS_ENSURE_STATE(shell);
nsCOMPtr<nsIPrivateDOMEvent> event = do_QueryInterface(aEvent);
NS_ENSURE_STATE(event);
event->SetTrusted(aTrusted);
nsEvent* internalEvent = event->GetInternalNSEvent();
NS_ENSURE_STATE(internalEvent);
nsCOMPtr<nsIContent> content = do_QueryInterface(aTarget);
NS_ENSURE_STATE(content);
nsEventStatus status = nsEventStatus_eIgnore;
shell->HandleEventWithTarget(internalEvent, nsnull, content,
&status);
*aRetVal = (status != nsEventStatus_eConsumeNoDefault);
return NS_OK;
}
static void
InitEvent(nsGUIEvent &aEvent, nsIntPoint *aPt = nsnull)
{
if (aPt) {
aEvent.refPoint = *aPt;
}
aEvent.time = PR_IntervalNow();
}
NS_IMETHODIMP
nsDOMWindowUtils::SendCompositionEvent(const nsAString& aType)
{
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;
}
PRUint32 msg;
if (aType.EqualsLiteral("compositionstart")) {
msg = NS_COMPOSITION_START;
} else if (aType.EqualsLiteral("compositionend")) {
msg = NS_COMPOSITION_END;
} else {
return NS_ERROR_FAILURE;
}
nsCompositionEvent compositionEvent(PR_TRUE, msg, widget);
InitEvent(compositionEvent);
nsEventStatus status;
nsresult rv = widget->DispatchEvent(&compositionEvent, status);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
static void
AppendClause(PRInt32 aClauseLength, PRUint32 aClauseAttr,
nsTArray<nsTextRange>* aRanges)
{
NS_PRECONDITION(aRanges, "aRange is null");
if (aClauseLength == 0) {
return;
}
nsTextRange range;
range.mStartOffset = aRanges->Length() == 0 ? 0 :
aRanges->ElementAt(aRanges->Length() - 1).mEndOffset + 1;
range.mEndOffset = range.mStartOffset + aClauseLength;
NS_ASSERTION(range.mStartOffset <= range.mEndOffset, "range is invalid");
NS_PRECONDITION(aClauseAttr == NS_TEXTRANGE_RAWINPUT ||
aClauseAttr == NS_TEXTRANGE_SELECTEDRAWTEXT ||
aClauseAttr == NS_TEXTRANGE_CONVERTEDTEXT ||
aClauseAttr == NS_TEXTRANGE_SELECTEDCONVERTEDTEXT,
"aClauseAttr is invalid value");
range.mRangeType = aClauseAttr;
aRanges->AppendElement(range);
}
NS_IMETHODIMP
nsDOMWindowUtils::SendTextEvent(const nsAString& aCompositionString,
PRInt32 aFirstClauseLength,
PRUint32 aFirstClauseAttr,
PRInt32 aSecondClauseLength,
PRUint32 aSecondClauseAttr,
PRInt32 aThirdClauseLength,
PRUint32 aThirdClauseAttr,
PRInt32 aCaretStart,
PRInt32 aCaretLength)
{
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;
}
nsTextEvent textEvent(PR_TRUE, NS_TEXT_TEXT, widget);
InitEvent(textEvent);
nsAutoTArray<nsTextRange, 4> textRanges;
NS_ENSURE_TRUE(aFirstClauseLength >= 0, NS_ERROR_INVALID_ARG);
NS_ENSURE_TRUE(aSecondClauseLength >= 0, NS_ERROR_INVALID_ARG);
NS_ENSURE_TRUE(aThirdClauseLength >= 0, NS_ERROR_INVALID_ARG);
AppendClause(aFirstClauseLength, aFirstClauseAttr, &textRanges);
AppendClause(aSecondClauseLength, aSecondClauseAttr, &textRanges);
AppendClause(aThirdClauseLength, aThirdClauseAttr, &textRanges);
PRInt32 len = aFirstClauseLength + aSecondClauseLength + aThirdClauseLength;
NS_ENSURE_TRUE(len == 0 || PRUint32(len) == aCompositionString.Length(),
NS_ERROR_FAILURE);
if (aCaretStart >= 0) {
nsTextRange range;
range.mStartOffset = aCaretStart;
range.mEndOffset = range.mStartOffset + aCaretLength;
range.mRangeType = NS_TEXTRANGE_CARETPOSITION;
textRanges.AppendElement(range);
}
textEvent.theText = aCompositionString;
textEvent.rangeCount = textRanges.Length();
textEvent.rangeArray = textRanges.Elements();
nsEventStatus status;
nsresult rv = widget->DispatchEvent(&textEvent, status);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SendQueryContentEvent(PRUint32 aType,
PRUint32 aOffset, PRUint32 aLength,
PRInt32 aX, PRInt32 aY,
nsIQueryContentEventResult **aResult)
{
*aResult = nsnull;
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
NS_ENSURE_TRUE(mWindow, NS_ERROR_FAILURE);
nsIDocShell *docShell = mWindow->GetDocShell();
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
nsCOMPtr<nsIPresShell> presShell;
docShell->GetPresShell(getter_AddRefs(presShell));
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
nsPresContext* presContext = presShell->GetPresContext();
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
// get the widget to send the event to
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget) {
return NS_ERROR_FAILURE;
}
if (aType != NS_QUERY_SELECTED_TEXT &&
aType != NS_QUERY_TEXT_CONTENT &&
aType != NS_QUERY_CARET_RECT &&
aType != NS_QUERY_TEXT_RECT &&
aType != NS_QUERY_EDITOR_RECT &&
aType != NS_QUERY_CHARACTER_AT_POINT) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIWidget> targetWidget = widget;
nsIntPoint pt(aX, aY);
if (aType == QUERY_CHARACTER_AT_POINT) {
// Looking for the widget at the point.
nsQueryContentEvent dummyEvent(PR_TRUE, NS_QUERY_CONTENT_STATE, widget);
InitEvent(dummyEvent, &pt);
nsIFrame* popupFrame =
nsLayoutUtils::GetPopupFrameForEventCoordinates(presContext->GetRootPresContext(), &dummyEvent);
nsIntRect widgetBounds;
nsresult rv = widget->GetClientBounds(widgetBounds);
NS_ENSURE_SUCCESS(rv, rv);
// There is no popup frame at the point and the point isn't in our widget,
// we cannot process this request.
NS_ENSURE_TRUE(popupFrame || widgetBounds.Contains(pt),
NS_ERROR_FAILURE);
// Fire the event on the widget at the point
if (popupFrame) {
targetWidget = popupFrame->GetNearestWidget();
}
}
pt += widget->WidgetToScreenOffset() - targetWidget->WidgetToScreenOffset();
nsQueryContentEvent queryEvent(PR_TRUE, aType, targetWidget);
InitEvent(queryEvent, &pt);
switch (aType) {
case NS_QUERY_TEXT_CONTENT:
queryEvent.InitForQueryTextContent(aOffset, aLength);
break;
case NS_QUERY_CARET_RECT:
queryEvent.InitForQueryCaretRect(aOffset);
break;
case NS_QUERY_TEXT_RECT:
queryEvent.InitForQueryTextRect(aOffset, aLength);
break;
}
nsEventStatus status;
nsresult rv = targetWidget->DispatchEvent(&queryEvent, status);
NS_ENSURE_SUCCESS(rv, rv);
nsQueryContentEventResult* result = new nsQueryContentEventResult();
NS_ENSURE_TRUE(result, NS_ERROR_OUT_OF_MEMORY);
result->SetEventResult(widget, queryEvent);
NS_ADDREF(*aResult = result);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SendSelectionSetEvent(PRUint32 aOffset,
PRUint32 aLength,
PRBool aReverse,
PRBool *aResult)
{
*aResult = PR_FALSE;
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;
}
nsSelectionEvent selectionEvent(PR_TRUE, NS_SELECTION_SET, widget);
InitEvent(selectionEvent);
selectionEvent.mOffset = aOffset;
selectionEvent.mLength = aLength;
selectionEvent.mReversed = aReverse;
nsEventStatus status;
nsresult rv = widget->DispatchEvent(&selectionEvent, status);
NS_ENSURE_SUCCESS(rv, rv);
*aResult = selectionEvent.mSucceeded;
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SendContentCommandEvent(const nsAString& aType,
nsITransferable * aTransferable)
{
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("cut"))
msg = NS_CONTENT_COMMAND_CUT;
else if (aType.EqualsLiteral("copy"))
msg = NS_CONTENT_COMMAND_COPY;
else if (aType.EqualsLiteral("paste"))
msg = NS_CONTENT_COMMAND_PASTE;
else if (aType.EqualsLiteral("delete"))
msg = NS_CONTENT_COMMAND_DELETE;
else if (aType.EqualsLiteral("undo"))
msg = NS_CONTENT_COMMAND_UNDO;
else if (aType.EqualsLiteral("redo"))
msg = NS_CONTENT_COMMAND_REDO;
else if (aType.EqualsLiteral("pasteTransferable"))
msg = NS_CONTENT_COMMAND_PASTE_TRANSFERABLE;
else
return NS_ERROR_FAILURE;
nsContentCommandEvent event(PR_TRUE, msg, widget);
if (msg == NS_CONTENT_COMMAND_PASTE_TRANSFERABLE) {
event.mTransferable = aTransferable;
}
nsEventStatus status;
return widget->DispatchEvent(&event, status);
}
NS_IMETHODIMP
nsDOMWindowUtils::GetClassName(char **aName)
{
if (!nsContentUtils::IsCallerTrustedForRead()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
// get the xpconnect native call context
nsAXPCNativeCallContext *cc = nsnull;
nsContentUtils::XPConnect()->GetCurrentNativeCallContext(&cc);
if(!cc)
return NS_ERROR_FAILURE;
// Get JSContext of current call
JSContext* cx;
nsresult rv = cc->GetJSContext(&cx);
if(NS_FAILED(rv) || !cx)
return NS_ERROR_FAILURE;
// get argc and argv and verify arg count
PRUint32 argc;
rv = cc->GetArgc(&argc);
if(NS_FAILED(rv))
return NS_ERROR_FAILURE;
if(argc < 1)
return NS_ERROR_XPC_NOT_ENOUGH_ARGS;
jsval* argv;
rv = cc->GetArgvPtr(&argv);
if(NS_FAILED(rv) || !argv)
return NS_ERROR_FAILURE;
// Our argument must be a non-null object.
if(JSVAL_IS_PRIMITIVE(argv[0]))
return NS_ERROR_XPC_BAD_CONVERT_JS;
*aName = NS_strdup(JS_GET_CLASS(cx, JSVAL_TO_OBJECT(argv[0]))->name);
return *aName ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetVisitedDependentComputedStyle(
nsIDOMElement *aElement, const nsAString& aPseudoElement,
const nsAString& aPropertyName, nsAString& aResult)
{
aResult.Truncate();
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCOMPtr<nsIDOMCSSStyleDeclaration> decl;
nsresult rv =
mWindow->GetComputedStyle(aElement, aPseudoElement, getter_AddRefs(decl));
NS_ENSURE_SUCCESS(rv, rv);
static_cast<nsComputedDOMStyle*>(decl.get())->SetExposeVisitedStyle(PR_TRUE);
rv = decl->GetPropertyValue(aPropertyName, aResult);
static_cast<nsComputedDOMStyle*>(decl.get())->SetExposeVisitedStyle(PR_FALSE);
return rv;
}
NS_IMETHODIMP
nsDOMWindowUtils::EnterModalState()
{
mWindow->EnterModalState();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::LeaveModalState()
{
mWindow->LeaveModalState(nsnull);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::EnterModalStateWithWindow(nsIDOMWindow **aWindow)
{
*aWindow = mWindow->EnterModalState();
NS_IF_ADDREF(*aWindow);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::LeaveModalStateWithWindow(nsIDOMWindow *aWindow)
{
NS_ENSURE_ARG_POINTER(aWindow);
mWindow->LeaveModalState(aWindow);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::IsInModalState(PRBool *retval)
{
*retval = mWindow->IsInModalState();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetParent()
{
// This wasn't privileged in the past, but better to expose less than more.
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsCOMPtr<nsIXPConnect> xpc = nsContentUtils::XPConnect();
// get the xpconnect native call context
nsAXPCNativeCallContext *cc = nsnull;
xpc->GetCurrentNativeCallContext(&cc);
if(!cc)
return NS_ERROR_FAILURE;
// Get JSContext of current call
JSContext* cx;
nsresult rv = cc->GetJSContext(&cx);
if(NS_FAILED(rv) || !cx)
return NS_ERROR_FAILURE;
// get place for return value
jsval *rval = nsnull;
rv = cc->GetRetValPtr(&rval);
if(NS_FAILED(rv) || !rval)
return NS_ERROR_FAILURE;
// get argc and argv and verify arg count
PRUint32 argc;
rv = cc->GetArgc(&argc);
if(NS_FAILED(rv))
return NS_ERROR_FAILURE;
if(argc != 1)
return NS_ERROR_XPC_NOT_ENOUGH_ARGS;
jsval* argv;
rv = cc->GetArgvPtr(&argv);
if(NS_FAILED(rv) || !argv)
return NS_ERROR_FAILURE;
// first argument must be an object
if(JSVAL_IS_PRIMITIVE(argv[0]))
return NS_ERROR_XPC_BAD_CONVERT_JS;
JSObject *parent = JS_GetParent(cx, JSVAL_TO_OBJECT(argv[0]));
*rval = OBJECT_TO_JSVAL(parent);
// Outerize if necessary.
if (parent) {
if (JSObjectOp outerize = parent->getClass()->ext.outerObject)
*rval = OBJECT_TO_JSVAL(outerize(cx, parent));
}
cc->SetReturnValueWasSet(PR_TRUE);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetOuterWindowID(PRUint64 *aWindowID)
{
NS_ASSERTION(mWindow->IsOuterWindow(), "How did that happen?");
*aWindowID = mWindow->WindowID();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetCurrentInnerWindowID(PRUint64 *aWindowID)
{
NS_ASSERTION(mWindow->IsOuterWindow(), "How did that happen?");
nsGlobalWindow* inner = mWindow->GetCurrentInnerWindowInternal();
if (!inner) {
return NS_ERROR_NOT_AVAILABLE;
}
*aWindowID = inner->WindowID();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::SuspendTimeouts()
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
mWindow->SuspendTimeouts();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::ResumeTimeouts()
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
mWindow->ResumeTimeouts();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetLayerManagerType(nsAString& aType)
{
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
LayerManager *mgr = widget->GetLayerManager();
if (!mgr)
return NS_ERROR_FAILURE;
mgr->GetBackendName(aType);
return NS_OK;
}
static PRBool
ComputeAnimationValue(nsCSSProperty aProperty,
Element* aElement,
const nsAString& aInput,
nsStyleAnimation::Value& aOutput)
{
if (!nsStyleAnimation::ComputeValue(aProperty, aElement, aInput,
PR_FALSE, aOutput)) {
return PR_FALSE;
}
// This matches TransExtractComputedValue in nsTransitionManager.cpp.
if (aProperty == eCSSProperty_visibility) {
NS_ABORT_IF_FALSE(aOutput.GetUnit() == nsStyleAnimation::eUnit_Enumerated,
"unexpected unit");
aOutput.SetIntValue(aOutput.GetIntValue(),
nsStyleAnimation::eUnit_Visibility);
}
return PR_TRUE;
}
NS_IMETHODIMP
nsDOMWindowUtils::AdvanceTimeAndRefresh(PRInt64 aMilliseconds)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
GetPresContext()->RefreshDriver()->AdvanceTimeAndRefresh(aMilliseconds);
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::RestoreNormalRefresh()
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
GetPresContext()->RefreshDriver()->RestoreNormalRefresh();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::ComputeAnimationDistance(nsIDOMElement* aElement,
const nsAString& aProperty,
const nsAString& aValue1,
const nsAString& aValue2,
double* aResult)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsresult rv;
nsCOMPtr<nsIContent> content = do_QueryInterface(aElement, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// Convert direction-dependent properties as appropriate, e.g.,
// border-left to border-left-value.
nsCSSProperty property = nsCSSProps::LookupProperty(aProperty);
if (property != eCSSProperty_UNKNOWN && nsCSSProps::IsShorthand(property)) {
nsCSSProperty subprop0 = *nsCSSProps::SubpropertyEntryFor(property);
if (nsCSSProps::PropHasFlags(subprop0, CSS_PROPERTY_REPORT_OTHER_NAME) &&
nsCSSProps::OtherNameFor(subprop0) == property) {
property = subprop0;
} else {
property = eCSSProperty_UNKNOWN;
}
}
NS_ABORT_IF_FALSE(property == eCSSProperty_UNKNOWN ||
!nsCSSProps::IsShorthand(property),
"should not have shorthand");
nsStyleAnimation::Value v1, v2;
if (property == eCSSProperty_UNKNOWN ||
!ComputeAnimationValue(property, content->AsElement(), aValue1, v1) ||
!ComputeAnimationValue(property, content->AsElement(), aValue2, v2)) {
return NS_ERROR_ILLEGAL_VALUE;
}
if (!nsStyleAnimation::ComputeDistance(property, v1, v2, *aResult)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult
nsDOMWindowUtils::RenderDocument(const nsRect& aRect,
PRUint32 aFlags,
nscolor aBackgroundColor,
gfxContext* aThebesContext)
{
// Get DOM Document
nsresult rv;
nsCOMPtr<nsIDOMDocument> ddoc;
rv = mWindow->GetDocument(getter_AddRefs(ddoc));
NS_ENSURE_SUCCESS(rv, rv);
// Get Document
nsCOMPtr<nsIDocument> doc = do_QueryInterface(ddoc, &rv);
NS_ENSURE_SUCCESS(rv, rv);
// Get Primary Shell
nsCOMPtr<nsIPresShell> presShell = doc->GetShell();
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
// Render Document
return presShell->RenderDocument(aRect, aFlags, aBackgroundColor, aThebesContext);
}
NS_IMETHODIMP
nsDOMWindowUtils::GetCursorType(PRInt16 *aCursor)
{
NS_ENSURE_ARG_POINTER(aCursor);
PRBool isSameDoc = PR_FALSE;
nsCOMPtr<nsIDocument> doc(do_QueryInterface(mWindow->GetExtantDocument()));
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
do {
if (nsEventStateManager::sMouseOverDocument == doc.get()) {
isSameDoc = PR_TRUE;
break;
}
} while ((doc = doc->GetParentDocument()));
if (!isSameDoc) {
*aCursor = eCursor_none;
return NS_OK;
}
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
// fetch cursor value from window's widget
*aCursor = widget->GetCursor();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetDisplayDPI(float *aDPI)
{
nsCOMPtr<nsIWidget> widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
*aDPI = widget->GetDPI();
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetOuterWindowWithId(PRUint64 aWindowID,
nsIDOMWindow** aWindow)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
*aWindow = nsGlobalWindow::GetOuterWindowWithId(aWindowID);
NS_IF_ADDREF(*aWindow);
return NS_OK;
}
#ifdef DEBUG
static PRBool
CheckLeafLayers(Layer* aLayer, const nsIntPoint& aOffset, nsIntRegion* aCoveredRegion)
{
gfxMatrix transform;
if (!aLayer->GetTransform().Is2D(&transform) ||
transform.HasNonIntegerTranslation())
return PR_FALSE;
transform.NudgeToIntegers();
nsIntPoint offset = aOffset + nsIntPoint(transform.x0, transform.y0);
Layer* child = aLayer->GetFirstChild();
if (child) {
while (child) {
if (!CheckLeafLayers(child, offset, aCoveredRegion))
return PR_FALSE;
child = child->GetNextSibling();
}
} else {
nsIntRegion rgn = aLayer->GetVisibleRegion();
rgn.MoveBy(offset);
nsIntRegion tmp;
tmp.And(rgn, *aCoveredRegion);
if (!tmp.IsEmpty())
return PR_FALSE;
aCoveredRegion->Or(*aCoveredRegion, rgn);
}
return PR_TRUE;
}
#endif
NS_IMETHODIMP
nsDOMWindowUtils::LeafLayersPartitionWindow(PRBool* aResult)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
*aResult = PR_TRUE;
#ifdef DEBUG
nsIWidget* widget = GetWidget();
if (!widget)
return NS_ERROR_FAILURE;
LayerManager* manager = widget->GetLayerManager();
if (!manager)
return NS_ERROR_FAILURE;
nsPresContext* presContext = GetPresContext();
if (!presContext)
return NS_ERROR_FAILURE;
Layer* root = manager->GetRoot();
if (!root)
return NS_ERROR_FAILURE;
nsIntPoint offset(0, 0);
nsIntRegion coveredRegion;
if (!CheckLeafLayers(root, offset, &coveredRegion)) {
*aResult = PR_FALSE;
}
if (!coveredRegion.IsEqual(root->GetVisibleRegion())) {
*aResult = PR_FALSE;
}
#endif
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::GetMayHaveTouchEventListeners(PRBool* aResult)
{
if (!IsUniversalXPConnectCapable()) {
return NS_ERROR_DOM_SECURITY_ERR;
}
nsPIDOMWindow* innerWindow = mWindow->GetCurrentInnerWindow();
*aResult = innerWindow ? innerWindow->HasTouchEventListeners() : PR_FALSE;
return NS_OK;
}
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