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gecko-dev/editor/libeditor/HTMLEditorObjectResizer.cpp

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53 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ErrorList.h"
#include "HTMLEditor.h"
#include "CSSEditUtils.h"
#include "HTMLEditorEventListener.h"
#include "HTMLEditUtils.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/mozalloc.h"
#include "mozilla/Preferences.h"
#include "mozilla/PresShell.h"
#include "mozilla/StaticPrefs_editor.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/MouseEvent.h"
#include "mozilla/dom/EventTarget.h"
#include "nsAString.h"
#include "nsAlgorithm.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsGkAtoms.h"
#include "nsAtom.h"
#include "nsIContent.h"
#include "nsID.h"
#include "mozilla/dom/Document.h"
#include "nsISupportsUtils.h"
#include "nsPIDOMWindow.h"
#include "nsReadableUtils.h"
#include "nsString.h"
#include "nsStringFwd.h"
#include "nsStyledElement.h"
#include "nsTextNode.h"
#include "nscore.h"
#include <algorithm>
#define kTopLeft u"nw"_ns
#define kTop u"n"_ns
#define kTopRight u"ne"_ns
#define kLeft u"w"_ns
#define kRight u"e"_ns
#define kBottomLeft u"sw"_ns
#define kBottom u"s"_ns
#define kBottomRight u"se"_ns
namespace mozilla {
using namespace dom;
/******************************************************************************
* mozilla::HTMLEditor
******************************************************************************/
ManualNACPtr HTMLEditor::CreateResizer(int16_t aLocation,
nsIContent& aParentContent) {
ManualNACPtr resizer = CreateAnonymousElement(nsGkAtoms::span, aParentContent,
u"mozResizer"_ns, false);
if (!resizer) {
NS_WARNING(
"HTMLEditor::CreateAnonymousElement(nsGkAtoms::span, mozResizer) "
"failed");
return nullptr;
}
// add the mouse listener so we can detect a click on a resizer
DebugOnly<nsresult> rvIgnored =
resizer->AddEventListener(u"mousedown"_ns, mEventListener, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"EventTarget::AddEventListener(mousedown) failed, but ignored");
nsAutoString locationStr;
switch (aLocation) {
case nsIHTMLObjectResizer::eTopLeft:
locationStr = kTopLeft;
break;
case nsIHTMLObjectResizer::eTop:
locationStr = kTop;
break;
case nsIHTMLObjectResizer::eTopRight:
locationStr = kTopRight;
break;
case nsIHTMLObjectResizer::eLeft:
locationStr = kLeft;
break;
case nsIHTMLObjectResizer::eRight:
locationStr = kRight;
break;
case nsIHTMLObjectResizer::eBottomLeft:
locationStr = kBottomLeft;
break;
case nsIHTMLObjectResizer::eBottom:
locationStr = kBottom;
break;
case nsIHTMLObjectResizer::eBottomRight:
locationStr = kBottomRight;
break;
}
if (NS_FAILED(resizer->SetAttr(kNameSpaceID_None, nsGkAtoms::anonlocation,
locationStr, true))) {
NS_WARNING("Element::SetAttr(nsGkAtoms::anonlocation) failed");
return nullptr;
}
return resizer;
}
ManualNACPtr HTMLEditor::CreateShadow(nsIContent& aParentContent,
Element& aOriginalObject) {
// let's create an image through the element factory
RefPtr<nsAtom> name;
if (HTMLEditUtils::IsImage(&aOriginalObject)) {
name = nsGkAtoms::img;
} else {
name = nsGkAtoms::span;
}
return CreateAnonymousElement(name, aParentContent, u"mozResizingShadow"_ns,
true);
}
ManualNACPtr HTMLEditor::CreateResizingInfo(nsIContent& aParentContent) {
// let's create an info box through the element factory
return CreateAnonymousElement(nsGkAtoms::span, aParentContent,
u"mozResizingInfo"_ns, true);
}
nsresult HTMLEditor::SetAllResizersPosition() {
if (NS_WARN_IF(!mTopLeftHandle)) {
return NS_ERROR_FAILURE; // There are no resizers.
}
int32_t x = mResizedObjectX;
int32_t y = mResizedObjectY;
int32_t w = mResizedObjectWidth;
int32_t h = mResizedObjectHeight;
nsAutoString value;
float resizerWidth, resizerHeight;
RefPtr<nsAtom> dummyUnit;
DebugOnly<nsresult> rvIgnored = NS_OK;
OwningNonNull<Element> topLeftHandle = *mTopLeftHandle.get();
// XXX Do we really need to computed value rather than specified value?
// Because it's an anonymous node.
rvIgnored = CSSEditUtils::GetComputedProperty(*topLeftHandle,
*nsGkAtoms::width, value);
if (NS_WARN_IF(Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
if (NS_WARN_IF(topLeftHandle != mTopLeftHandle)) {
return NS_ERROR_FAILURE;
}
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"CSSEditUtils::GetComputedProperty(nsGkAtoms::width) "
"failed, but ignored");
rvIgnored = CSSEditUtils::GetComputedProperty(*topLeftHandle,
*nsGkAtoms::height, value);
if (NS_WARN_IF(Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
if (NS_WARN_IF(topLeftHandle != mTopLeftHandle)) {
return NS_ERROR_FAILURE;
}
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"CSSEditUtils::GetComputedProperty(nsGkAtoms::height) "
"failed, but ignored");
CSSEditUtils::ParseLength(value, &resizerWidth, getter_AddRefs(dummyUnit));
CSSEditUtils::ParseLength(value, &resizerHeight, getter_AddRefs(dummyUnit));
int32_t rw = static_cast<int32_t>((resizerWidth + 1) / 2);
int32_t rh = static_cast<int32_t>((resizerHeight + 1) / 2);
// While moving each resizer, mutation event listener may hide the resizers.
// And in worst case, new resizers may be recreated. So, we need to store
// all resizers here, and then, if we detect a resizer is removed or replaced,
// we should do nothing anymore.
// FYI: Note that only checking if mTopLeftHandle is replaced is enough.
// We're may be in hot path if user resizes an element a lot. So,
// we should just add-ref mTopLeftHandle.
auto setHandlePosition =
[this](ManualNACPtr& aHandleElement, int32_t aNewX, int32_t aNewY)
MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION -> nsresult {
RefPtr<nsStyledElement> handleStyledElement =
nsStyledElement::FromNodeOrNull(aHandleElement.get());
if (!handleStyledElement) {
return NS_OK;
}
nsresult rv = SetAnonymousElementPositionWithoutTransaction(
*handleStyledElement, aNewX, aNewY);
if (NS_FAILED(rv)) {
NS_WARNING(
"HTMLEditor::SetAnonymousElementPositionWithoutTransaction() "
"failed");
return rv;
}
return NS_WARN_IF(handleStyledElement != aHandleElement.get())
? NS_ERROR_FAILURE
: NS_OK;
};
nsresult rv;
rv = setHandlePosition(mTopLeftHandle, x - rw, y - rh);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set top-left handle position");
return rv;
}
rv = setHandlePosition(mTopHandle, x + w / 2 - rw, y - rh);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set top handle position");
return rv;
}
rv = setHandlePosition(mTopRightHandle, x + w - rw - 1, y - rh);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set top-right handle position");
return rv;
}
rv = setHandlePosition(mLeftHandle, x - rw, y + h / 2 - rh);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set left handle position");
return rv;
}
rv = setHandlePosition(mRightHandle, x + w - rw - 1, y + h / 2 - rh);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set right handle position");
return rv;
}
rv = setHandlePosition(mBottomLeftHandle, x - rw, y + h - rh - 1);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set bottom-left handle position");
return rv;
}
rv = setHandlePosition(mBottomHandle, x + w / 2 - rw, y + h - rh - 1);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set bottom handle position");
return rv;
}
rv = setHandlePosition(mBottomRightHandle, x + w - rw - 1, y + h - rh - 1);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to set bottom-right handle position");
return rv;
}
return NS_OK;
}
nsresult HTMLEditor::RefreshResizers() {
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
nsresult rv = RefreshResizersInternal();
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"HTMLEditor::RefreshResizersInternal() failed");
return EditorBase::ToGenericNSResult(rv);
}
nsresult HTMLEditor::RefreshResizersInternal() {
MOZ_ASSERT(IsEditActionDataAvailable());
// Don't warn even if resizers are not visible since script cannot check
// if they are visible and this is non-virtual method. So, the cost of
// calling this can be ignored.
if (!mResizedObject) {
return NS_OK;
}
OwningNonNull<Element> resizedObject = *mResizedObject;
nsresult rv = GetPositionAndDimensions(
resizedObject, mResizedObjectX, mResizedObjectY, mResizedObjectWidth,
mResizedObjectHeight, mResizedObjectBorderLeft, mResizedObjectBorderTop,
mResizedObjectMarginLeft, mResizedObjectMarginTop);
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::GetPositionAndDimensions() failed");
return rv;
}
if (NS_WARN_IF(resizedObject != mResizedObject)) {
return NS_ERROR_FAILURE;
}
rv = SetAllResizersPosition();
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::SetAllResizersPosition() failed");
return rv;
}
if (NS_WARN_IF(resizedObject != mResizedObject)) {
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(
mResizingShadow,
"SetAllResizersPosition() should return error if resizers are hidden");
RefPtr<Element> resizingShadow = mResizingShadow.get();
rv = SetShadowPosition(*resizingShadow, resizedObject, mResizedObjectX,
mResizedObjectY);
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::SetShadowPosition() failed");
return rv;
}
if (NS_WARN_IF(resizedObject != mResizedObject)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult HTMLEditor::ShowResizersInternal(Element& aResizedElement) {
// When we have visible resizers, we cannot show new resizers.
// So, the caller should call HideResizersInternal() first if this
// returns error.
if (NS_WARN_IF(mResizedObject)) {
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsIContent> parentContent = aResizedElement.GetParent();
if (NS_WARN_IF(!parentContent)) {
return NS_ERROR_FAILURE;
}
const RefPtr<Element> editingHost = ComputeEditingHost();
if (NS_WARN_IF(!editingHost) ||
NS_WARN_IF(!aResizedElement.IsInclusiveDescendantOf(editingHost))) {
return NS_ERROR_UNEXPECTED;
}
// Let's create and setup resizers. If we failed something, we should
// cancel everything which we do in this method.
do {
mResizedObject = &aResizedElement;
// The resizers and the shadow will be anonymous siblings of the element.
// Note that creating a resizer or shadow may causes calling
// HideRisizersInternal() via a mutation event listener. So, we should
// store new resizer to a local variable, then, check:
// - whether creating resizer is already set to the member or not
// - whether resizing element is changed to another element
// If showing resizers are canceled, we hit the latter check.
// If resizers for another element is shown during this, we hit the latter
// check too.
// If resizers are just shown again for same element, we hit the former
// check.
ManualNACPtr newResizer =
CreateResizer(nsIHTMLObjectResizer::eTopLeft, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eTopLeft) failed");
break;
}
if (NS_WARN_IF(mTopLeftHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
// Don't hide current resizers in this case because they are not what
// we're creating.
return NS_ERROR_FAILURE;
}
mTopLeftHandle = std::move(newResizer);
newResizer = CreateResizer(nsIHTMLObjectResizer::eTop, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eTop) failed");
break;
}
if (NS_WARN_IF(mTopHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mTopHandle = std::move(newResizer);
newResizer = CreateResizer(nsIHTMLObjectResizer::eTopRight, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eTopRight) failed");
break;
}
if (NS_WARN_IF(mTopRightHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mTopRightHandle = std::move(newResizer);
newResizer = CreateResizer(nsIHTMLObjectResizer::eLeft, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eLeft) failed");
break;
}
if (NS_WARN_IF(mLeftHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mLeftHandle = std::move(newResizer);
newResizer = CreateResizer(nsIHTMLObjectResizer::eRight, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eRight) failed");
break;
}
if (NS_WARN_IF(mRightHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mRightHandle = std::move(newResizer);
newResizer =
CreateResizer(nsIHTMLObjectResizer::eBottomLeft, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eBottomLeft) failed");
break;
}
if (NS_WARN_IF(mBottomLeftHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mBottomLeftHandle = std::move(newResizer);
newResizer = CreateResizer(nsIHTMLObjectResizer::eBottom, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eBottom) failed");
break;
}
if (NS_WARN_IF(mBottomHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mBottomHandle = std::move(newResizer);
newResizer =
CreateResizer(nsIHTMLObjectResizer::eBottomRight, *parentContent);
if (!newResizer) {
NS_WARNING("HTMLEditor::CreateResizer(eBottomRight) failed");
break;
}
if (NS_WARN_IF(mBottomRightHandle) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mBottomRightHandle = std::move(newResizer);
// Store the last resizer which we created. This is useful when we
// need to check whether our resizers are hiddedn and recreated another
// set of resizers or not.
RefPtr<Element> createdBottomRightHandle = mBottomRightHandle.get();
nsresult rv = GetPositionAndDimensions(
aResizedElement, mResizedObjectX, mResizedObjectY, mResizedObjectWidth,
mResizedObjectHeight, mResizedObjectBorderLeft, mResizedObjectBorderTop,
mResizedObjectMarginLeft, mResizedObjectMarginTop);
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::GetPositionAndDimensions() failed");
break;
}
// and let's set their absolute positions in the document
rv = SetAllResizersPosition();
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::SetAllResizersPosition() failed");
if (NS_WARN_IF(mBottomRightHandle.get() != createdBottomRightHandle)) {
return NS_ERROR_FAILURE;
}
break;
}
// now, let's create the resizing shadow
ManualNACPtr newShadow = CreateShadow(*parentContent, aResizedElement);
if (!newShadow) {
NS_WARNING("HTMLEditor::CreateShadow() failed");
break;
}
if (NS_WARN_IF(mResizingShadow) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mResizingShadow = std::move(newShadow);
// and set its position
RefPtr<Element> resizingShadow = mResizingShadow.get();
rv = SetShadowPosition(*resizingShadow, aResizedElement, mResizedObjectX,
mResizedObjectY);
if (NS_FAILED(rv)) {
NS_WARNING("HTMLEditor::SetShadowPosition() failed");
if (NS_WARN_IF(mBottomRightHandle.get() != createdBottomRightHandle)) {
return NS_ERROR_FAILURE;
}
break;
}
// and then the resizing info tooltip
ManualNACPtr newResizingInfo = CreateResizingInfo(*parentContent);
if (!newResizingInfo) {
NS_WARNING("HTMLEditor::CreateResizingInfo() failed");
break;
}
if (NS_WARN_IF(mResizingInfo) ||
NS_WARN_IF(mResizedObject != &aResizedElement)) {
return NS_ERROR_FAILURE;
}
mResizingInfo = std::move(newResizingInfo);
// and listen to the "resize" event on the window first, get the
// window from the document...
if (NS_WARN_IF(!mEventListener)) {
break;
}
rv = static_cast<HTMLEditorEventListener*>(mEventListener.get())
->ListenToWindowResizeEvent(true);
if (NS_FAILED(rv)) {
NS_WARNING(
"HTMLEditorEventListener::ListenToWindowResizeEvent(true) failed");
break;
}
MOZ_ASSERT(mResizedObject == &aResizedElement);
// XXX Even when it failed to add event listener, should we need to set
// _moz_resizing attribute?
DebugOnly<nsresult> rvIgnored = aResizedElement.SetAttr(
kNameSpaceID_None, nsGkAtoms::_moz_resizing, u"true"_ns, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::SetAttr(nsGkAtoms::_moz_resizing, true) failed, but ignored");
return NS_OK;
} while (true);
DebugOnly<nsresult> rv = HideResizersInternal();
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"HTMLEditor::HideResizersInternal() failed to clean up");
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP HTMLEditor::HideResizers() {
AutoEditActionDataSetter editActionData(*this, EditAction::eNotEditing);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
nsresult rv = HideResizersInternal();
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"HTMLEditor::HideResizersInternal() failed");
return EditorBase::ToGenericNSResult(rv);
}
nsresult HTMLEditor::HideResizersInternal() {
// Don't warn even if resizers are visible since script cannot check
// if they are visible and this is non-virtual method. So, the cost of
// calling this can be ignored.
if (!mResizedObject) {
return NS_OK;
}
// get the presshell's document observer interface.
RefPtr<PresShell> presShell = GetPresShell();
NS_WARNING_ASSERTION(presShell, "There is no presShell");
// We allow the pres shell to be null; when it is, we presume there
// are no document observers to notify, but we still want to
// UnbindFromTree.
constexpr auto mousedown = u"mousedown"_ns;
// HTMLEditor should forget all members related to resizers first since
// removing a part of UI may cause showing the resizers again. In such
// case, the members may be overwritten by ShowResizers() and this will
// lose the chance to release the old resizers.
ManualNACPtr topLeftHandle(std::move(mTopLeftHandle));
ManualNACPtr topHandle(std::move(mTopHandle));
ManualNACPtr topRightHandle(std::move(mTopRightHandle));
ManualNACPtr leftHandle(std::move(mLeftHandle));
ManualNACPtr rightHandle(std::move(mRightHandle));
ManualNACPtr bottomLeftHandle(std::move(mBottomLeftHandle));
ManualNACPtr bottomHandle(std::move(mBottomHandle));
ManualNACPtr bottomRightHandle(std::move(mBottomRightHandle));
ManualNACPtr resizingShadow(std::move(mResizingShadow));
ManualNACPtr resizingInfo(std::move(mResizingInfo));
RefPtr<Element> activatedHandle(std::move(mActivatedHandle));
RefPtr<Element> resizedObject(std::move(mResizedObject));
// Remvoe all handles.
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(topLeftHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(topHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(topRightHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(leftHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(rightHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(bottomLeftHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(bottomHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(bottomRightHandle), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(resizingShadow), presShell);
RemoveListenerAndDeleteRef(mousedown, mEventListener, true,
std::move(resizingInfo), presShell);
// Remove active state of a resizer.
if (activatedHandle) {
DebugOnly<nsresult> rvIgnored = activatedHandle->UnsetAttr(
kNameSpaceID_None, nsGkAtoms::_moz_activated, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::UnsetAttr(nsGkAtoms::_moz_activated) failed, but ignored");
}
// Remove resizing state of the target element.
DebugOnly<nsresult> rvIgnored = resizedObject->UnsetAttr(
kNameSpaceID_None, nsGkAtoms::_moz_resizing, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::UnsetAttr(nsGkAtoms::_moz_resizing) failed, but ignored");
if (!mEventListener) {
return NS_OK;
}
nsresult rv = static_cast<HTMLEditorEventListener*>(mEventListener.get())
->ListenToMouseMoveEventForResizers(false);
if (NS_FAILED(rv)) {
NS_WARNING(
"HTMLEditorEventListener::ListenToMouseMoveEventForResizers(false) "
"failed");
return rv;
}
// Remove resize event listener from the window.
if (!mEventListener) {
return NS_OK;
}
rv = static_cast<HTMLEditorEventListener*>(mEventListener.get())
->ListenToWindowResizeEvent(false);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"HTMLEditorEventListener::ListenToWindowResizeEvent(false) failed");
return rv;
}
void HTMLEditor::HideShadowAndInfo() {
if (mResizingShadow) {
DebugOnly<nsresult> rvIgnored = mResizingShadow->SetAttr(
kNameSpaceID_None, nsGkAtoms::_class, u"hidden"_ns, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::SetAttr(nsGkAtoms::_class, hidden) failed, but ignored");
}
if (mResizingInfo) {
DebugOnly<nsresult> rvIgnored = mResizingInfo->SetAttr(
kNameSpaceID_None, nsGkAtoms::_class, u"hidden"_ns, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::SetAttr(nsGkAtoms::_class, hidden) failed, but ignored");
}
}
nsresult HTMLEditor::StartResizing(Element& aHandleElement) {
mIsResizing = true;
mActivatedHandle = &aHandleElement;
DebugOnly<nsresult> rvIgnored = mActivatedHandle->SetAttr(
kNameSpaceID_None, nsGkAtoms::_moz_activated, u"true"_ns, true);
if (NS_WARN_IF(Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::SetAttr(nsGkAtoms::_moz_activated, true) failed");
// do we want to preserve ratio or not?
const bool preserveRatio = HTMLEditUtils::IsImage(mResizedObject);
// the way we change the position/size of the shadow depends on
// the handle
nsAutoString locationStr;
mActivatedHandle->GetAttr(nsGkAtoms::anonlocation, locationStr);
if (locationStr.Equals(kTopLeft)) {
SetResizeIncrements(1, 1, -1, -1, preserveRatio);
} else if (locationStr.Equals(kTop)) {
SetResizeIncrements(0, 1, 0, -1, false);
} else if (locationStr.Equals(kTopRight)) {
SetResizeIncrements(0, 1, 1, -1, preserveRatio);
} else if (locationStr.Equals(kLeft)) {
SetResizeIncrements(1, 0, -1, 0, false);
} else if (locationStr.Equals(kRight)) {
SetResizeIncrements(0, 0, 1, 0, false);
} else if (locationStr.Equals(kBottomLeft)) {
SetResizeIncrements(1, 0, -1, 1, preserveRatio);
} else if (locationStr.Equals(kBottom)) {
SetResizeIncrements(0, 0, 0, 1, false);
} else if (locationStr.Equals(kBottomRight)) {
SetResizeIncrements(0, 0, 1, 1, preserveRatio);
}
// make the shadow appear
rvIgnored =
mResizingShadow->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_class, true);
if (NS_WARN_IF(Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"Element::UnsetAttr(nsGkAtoms::_class) failed");
// position it
if (RefPtr<nsStyledElement> resizingShadowStyledElement =
nsStyledElement::FromNodeOrNull(mResizingShadow.get())) {
nsresult rv;
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingShadowStyledElement, *nsGkAtoms::width, mResizedObjectWidth);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction("
"nsGkAtoms::width) destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction("
"nsGkAtoms::width) failed");
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingShadowStyledElement, *nsGkAtoms::height, mResizedObjectHeight);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction("
"nsGkAtoms::height) destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction("
"nsGkAtoms::height) failed");
}
// add a mouse move listener to the editor
if (NS_WARN_IF(!mEventListener)) {
return NS_ERROR_NOT_INITIALIZED;
}
nsresult rv = static_cast<HTMLEditorEventListener*>(mEventListener.get())
->ListenToMouseMoveEventForResizers(true);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"HTMLEditorEventListener::"
"ListenToMouseMoveEventForResizers(true) failed");
return rv;
}
nsresult HTMLEditor::StartToDragResizerOrHandleDragGestureOnGrabber(
MouseEvent& aMouseDownEvent, Element& aEventTargetElement) {
MOZ_ASSERT(aMouseDownEvent.GetExplicitOriginalTarget() ==
&aEventTargetElement);
MOZ_ASSERT(!aMouseDownEvent.DefaultPrevented());
MOZ_ASSERT(aMouseDownEvent.WidgetEventPtr()->mMessage == eMouseDown);
nsAutoString anonclass;
aEventTargetElement.GetAttr(nsGkAtoms::_moz_anonclass, anonclass);
if (anonclass.EqualsLiteral("mozResizer")) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eResizingElement);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
// If we have an anonymous element and that element is a resizer,
// let's start resizing!
aMouseDownEvent.PreventDefault();
mOriginalX = aMouseDownEvent.ClientX();
mOriginalY = aMouseDownEvent.ClientY();
nsresult rv = StartResizing(aEventTargetElement);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"HTMLEditor::StartResizing() failed");
return EditorBase::ToGenericNSResult(rv);
}
if (anonclass.EqualsLiteral("mozGrabber")) {
AutoEditActionDataSetter editActionData(*this, EditAction::eMovingElement);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
// If we have an anonymous element and that element is a grabber,
// let's start moving the element!
mOriginalX = aMouseDownEvent.ClientX();
mOriginalY = aMouseDownEvent.ClientY();
nsresult rv = GrabberClicked();
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"HTMLEditor::GrabberClicked() failed");
return EditorBase::ToGenericNSResult(rv);
}
return NS_OK;
}
nsresult HTMLEditor::StopDraggingResizerOrGrabberAt(
const CSSIntPoint& aClientPoint) {
if (mIsResizing) {
AutoEditActionDataSetter editActionData(*this, EditAction::eResizeElement);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
// we are resizing and release the mouse button, so let's
// end the resizing process
mIsResizing = false;
HideShadowAndInfo();
nsresult rv = editActionData.MaybeDispatchBeforeInputEvent();
if (NS_FAILED(rv)) {
NS_WARNING_ASSERTION(
rv == NS_ERROR_EDITOR_ACTION_CANCELED,
"EditorBase::MaybeDispatchBeforeInputEvent(), failed");
return EditorBase::ToGenericNSResult(rv);
}
rv = SetFinalSizeWithTransaction(aClientPoint.x, aClientPoint.y);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"HTMLEditor::SetFinalSizeWithTransaction() destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"HTMLEditor::SetFinalSizeWithTransaction() failed, but ignored");
return NS_OK;
}
if (mIsMoving || mGrabberClicked) {
AutoEditActionDataSetter editActionData(*this, EditAction::eMoveElement);
nsresult rv = editActionData.CanHandleAndMaybeDispatchBeforeInputEvent();
if (rv != NS_ERROR_EDITOR_ACTION_CANCELED && NS_WARN_IF(NS_FAILED(rv))) {
NS_WARNING("CanHandleAndMaybeDispatchBeforeInputEvent() failed");
return EditorBase::ToGenericNSResult(rv);
}
if (mIsMoving) {
DebugOnly<nsresult> rvIgnored = mPositioningShadow->SetAttr(
kNameSpaceID_None, nsGkAtoms::_class, u"hidden"_ns, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::SetAttr(nsGkAtoms::_class, hidden) failed");
if (rv != NS_ERROR_EDITOR_ACTION_CANCELED) {
SetFinalPosition(aClientPoint.x, aClientPoint.y);
}
}
if (mGrabberClicked) {
DebugOnly<nsresult> rvIgnored = EndMoving();
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"HTMLEditor::EndMoving() failed");
}
return EditorBase::ToGenericNSResult(rv);
}
return NS_OK;
}
void HTMLEditor::SetResizeIncrements(int32_t aX, int32_t aY, int32_t aW,
int32_t aH, bool aPreserveRatio) {
mXIncrementFactor = aX;
mYIncrementFactor = aY;
mWidthIncrementFactor = aW;
mHeightIncrementFactor = aH;
mPreserveRatio = aPreserveRatio;
}
nsresult HTMLEditor::SetResizingInfoPosition(int32_t aX, int32_t aY, int32_t aW,
int32_t aH) {
// Determine the position of the resizing info box based upon the new
// position and size of the element (aX, aY, aW, aH), and which
// resizer is the "activated handle". For example, place the resizing
// info box at the bottom-right corner of the new element, if the element
// is being resized by the bottom-right resizer.
int32_t infoXPosition;
int32_t infoYPosition;
if (mActivatedHandle == mTopLeftHandle || mActivatedHandle == mLeftHandle ||
mActivatedHandle == mBottomLeftHandle) {
infoXPosition = aX;
} else if (mActivatedHandle == mTopHandle ||
mActivatedHandle == mBottomHandle) {
infoXPosition = aX + (aW / 2);
} else {
// should only occur when mActivatedHandle is one of the 3 right-side
// handles, but this is a reasonable default if it isn't any of them (?)
infoXPosition = aX + aW;
}
if (mActivatedHandle == mTopLeftHandle || mActivatedHandle == mTopHandle ||
mActivatedHandle == mTopRightHandle) {
infoYPosition = aY;
} else if (mActivatedHandle == mLeftHandle ||
mActivatedHandle == mRightHandle) {
infoYPosition = aY + (aH / 2);
} else {
// should only occur when mActivatedHandle is one of the 3 bottom-side
// handles, but this is a reasonable default if it isn't any of them (?)
infoYPosition = aY + aH;
}
// Offset info box by 20 so it's not directly under the mouse cursor.
const int mouseCursorOffset = 20;
if (RefPtr<nsStyledElement> resizingInfoStyledElement =
nsStyledElement::FromNodeOrNull(mResizingInfo.get())) {
nsresult rv;
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingInfoStyledElement, *nsGkAtoms::left,
infoXPosition + mouseCursorOffset);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::left) "
"destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::left) "
"failed, but ignored");
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingInfoStyledElement, *nsGkAtoms::top,
infoYPosition + mouseCursorOffset);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::top) "
"destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::top) "
"failed, but ignored");
}
nsCOMPtr<nsIContent> textInfo = mResizingInfo->GetFirstChild();
ErrorResult error;
if (textInfo) {
mResizingInfo->RemoveChild(*textInfo, error);
if (error.Failed()) {
NS_WARNING("nsINode::RemoveChild() failed");
return error.StealNSResult();
}
textInfo = nullptr;
}
nsAutoString widthStr, heightStr, diffWidthStr, diffHeightStr;
widthStr.AppendInt(aW);
heightStr.AppendInt(aH);
int32_t diffWidth = aW - mResizedObjectWidth;
int32_t diffHeight = aH - mResizedObjectHeight;
if (diffWidth > 0) {
diffWidthStr.Assign('+');
}
if (diffHeight > 0) {
diffHeightStr.Assign('+');
}
diffWidthStr.AppendInt(diffWidth);
diffHeightStr.AppendInt(diffHeight);
nsAutoString info(widthStr + u" x "_ns + heightStr + u" ("_ns + diffWidthStr +
u", "_ns + diffHeightStr + u")"_ns);
RefPtr<Document> document = GetDocument();
textInfo = document->CreateTextNode(info);
if (!textInfo) {
NS_WARNING("Document::CreateTextNode() failed");
return NS_ERROR_FAILURE;
}
mResizingInfo->AppendChild(*textInfo, error);
if (error.Failed()) {
NS_WARNING("nsINode::AppendChild() failed");
return error.StealNSResult();
}
nsresult rv =
mResizingInfo->UnsetAttr(kNameSpaceID_None, nsGkAtoms::_class, true);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"Element::UnsetAttr(nsGkAtoms::_class) failed");
return rv;
}
nsresult HTMLEditor::SetShadowPosition(Element& aShadowElement,
Element& aElement, int32_t aElementX,
int32_t aElementY) {
MOZ_ASSERT(&aShadowElement == mResizingShadow ||
&aShadowElement == mPositioningShadow);
RefPtr<Element> handlingShadowElement = &aShadowElement == mResizingShadow
? mResizingShadow.get()
: mPositioningShadow.get();
if (nsStyledElement* styledShadowElement =
nsStyledElement::FromNode(&aShadowElement)) {
// MOZ_KnownLive(*styledShadowElement): It's aShadowElement whose lifetime
// must be guaranteed by caller because of MOZ_CAN_RUN_SCRIPT method.
nsresult rv = SetAnonymousElementPositionWithoutTransaction(
MOZ_KnownLive(*styledShadowElement), aElementX, aElementY);
if (NS_FAILED(rv)) {
NS_WARNING(
"HTMLEditor::SetAnonymousElementPositionWithoutTransaction() "
"failed");
return rv;
}
}
if (!HTMLEditUtils::IsImage(&aElement)) {
return NS_OK;
}
nsAutoString imageSource;
aElement.GetAttr(nsGkAtoms::src, imageSource);
nsresult rv = aShadowElement.SetAttr(kNameSpaceID_None, nsGkAtoms::src,
imageSource, true);
if (NS_WARN_IF(Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
if (NS_FAILED(rv)) {
NS_WARNING("Element::SetAttr(nsGkAtoms::src) failed");
return NS_ERROR_FAILURE;
}
return NS_WARN_IF(&aShadowElement != handlingShadowElement) ? NS_ERROR_FAILURE
: NS_OK;
}
int32_t HTMLEditor::GetNewResizingIncrement(int32_t aX, int32_t aY,
ResizeAt aResizeAt) const {
int32_t result = 0;
if (!mPreserveRatio) {
switch (aResizeAt) {
case ResizeAt::eX:
case ResizeAt::eWidth:
result = aX - mOriginalX;
break;
case ResizeAt::eY:
case ResizeAt::eHeight:
result = aY - mOriginalY;
break;
default:
MOZ_ASSERT_UNREACHABLE("Invalid resizing request");
}
return result;
}
int32_t xi = (aX - mOriginalX) * mWidthIncrementFactor;
int32_t yi = (aY - mOriginalY) * mHeightIncrementFactor;
float objectSizeRatio =
((float)mResizedObjectWidth) / ((float)mResizedObjectHeight);
result = (xi > yi) ? xi : yi;
switch (aResizeAt) {
case ResizeAt::eX:
case ResizeAt::eWidth:
if (result == yi) result = (int32_t)(((float)result) * objectSizeRatio);
result = (int32_t)(((float)result) * mWidthIncrementFactor);
break;
case ResizeAt::eY:
case ResizeAt::eHeight:
if (result == xi) result = (int32_t)(((float)result) / objectSizeRatio);
result = (int32_t)(((float)result) * mHeightIncrementFactor);
break;
}
return result;
}
int32_t HTMLEditor::GetNewResizingX(int32_t aX, int32_t aY) {
int32_t resized =
mResizedObjectX +
GetNewResizingIncrement(aX, aY, ResizeAt::eX) * mXIncrementFactor;
int32_t max = mResizedObjectX + mResizedObjectWidth;
return std::min(resized, max);
}
int32_t HTMLEditor::GetNewResizingY(int32_t aX, int32_t aY) {
int32_t resized =
mResizedObjectY +
GetNewResizingIncrement(aX, aY, ResizeAt::eY) * mYIncrementFactor;
int32_t max = mResizedObjectY + mResizedObjectHeight;
return std::min(resized, max);
}
int32_t HTMLEditor::GetNewResizingWidth(int32_t aX, int32_t aY) {
int32_t resized =
mResizedObjectWidth +
GetNewResizingIncrement(aX, aY, ResizeAt::eWidth) * mWidthIncrementFactor;
return std::max(resized, 1);
}
int32_t HTMLEditor::GetNewResizingHeight(int32_t aX, int32_t aY) {
int32_t resized = mResizedObjectHeight +
GetNewResizingIncrement(aX, aY, ResizeAt::eHeight) *
mHeightIncrementFactor;
return std::max(resized, 1);
}
nsresult HTMLEditor::UpdateResizerOrGrabberPositionTo(
const CSSIntPoint& aClientPoint) {
if (mIsResizing) {
AutoEditActionDataSetter editActionData(*this,
EditAction::eResizingElement);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
// we are resizing and the mouse pointer's position has changed
// we have to resdisplay the shadow
const int32_t newX = GetNewResizingX(aClientPoint.x, aClientPoint.y);
const int32_t newY = GetNewResizingY(aClientPoint.x, aClientPoint.y);
const int32_t newWidth =
GetNewResizingWidth(aClientPoint.x, aClientPoint.y);
const int32_t newHeight =
GetNewResizingHeight(aClientPoint.x, aClientPoint.y);
if (RefPtr<nsStyledElement> resizingShadowStyledElement =
nsStyledElement::FromNodeOrNull(mResizingShadow.get())) {
nsresult rv;
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingShadowStyledElement, *nsGkAtoms::left, newX);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::left)"
" destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::left) "
"failed, but ignored");
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingShadowStyledElement, *nsGkAtoms::top, newY);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::top)"
" destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::top) "
"failed, but ignored");
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingShadowStyledElement, *nsGkAtoms::width, newWidth);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"width) destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::width) "
"failed, but ignored");
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*resizingShadowStyledElement, *nsGkAtoms::height, newHeight);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"height) destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::height)"
" failed, but ignored");
}
nsresult rv = SetResizingInfoPosition(newX, newY, newWidth, newHeight);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
"HTMLEditor::SetResizingInfoPosition() failed");
return rv;
}
AutoEditActionDataSetter editActionData(*this, EditAction::eMovingElement);
if (NS_WARN_IF(!editActionData.CanHandle())) {
return NS_ERROR_NOT_INITIALIZED;
}
if (mGrabberClicked) {
int32_t xThreshold =
LookAndFeel::GetInt(LookAndFeel::IntID::DragThresholdX, 1);
int32_t yThreshold =
LookAndFeel::GetInt(LookAndFeel::IntID::DragThresholdY, 1);
if (DeprecatedAbs(aClientPoint.x - mOriginalX) * 2 >= xThreshold ||
DeprecatedAbs(aClientPoint.y - mOriginalY) * 2 >= yThreshold) {
mGrabberClicked = false;
DebugOnly<nsresult> rvIgnored = StartMoving();
NS_WARNING_ASSERTION(NS_SUCCEEDED(rvIgnored),
"HTMLEditor::StartMoving() failed, but ignored");
}
}
if (mIsMoving) {
int32_t newX = mPositionedObjectX + aClientPoint.x - mOriginalX;
int32_t newY = mPositionedObjectY + aClientPoint.y - mOriginalY;
// Maybe align newX and newY to the grid.
SnapToGrid(newX, newY);
if (RefPtr<nsStyledElement> positioningShadowStyledElement =
nsStyledElement::FromNodeOrNull(mPositioningShadow.get())) {
nsresult rv;
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*positioningShadowStyledElement, *nsGkAtoms::left, newX);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::left)"
" destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::left) "
"failed, but ignored");
rv = CSSEditUtils::SetCSSPropertyPixelsWithoutTransaction(
*positioningShadowStyledElement, *nsGkAtoms::top, newY);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::top) "
"destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::top) "
"failed, but ignored");
}
}
return NS_OK;
}
nsresult HTMLEditor::SetFinalSizeWithTransaction(int32_t aX, int32_t aY) {
if (!mResizedObject) {
// paranoia
return NS_OK;
}
if (mActivatedHandle) {
DebugOnly<nsresult> rvIgnored = mActivatedHandle->UnsetAttr(
kNameSpaceID_None, nsGkAtoms::_moz_activated, true);
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"Element::UnsetAttr(nsGkAtoms::_moz_activated) failed, but ignored");
mActivatedHandle = nullptr;
}
// we have now to set the new width and height of the resized object
// we don't set the x and y position because we don't control that in
// a normal HTML layout
int32_t left = GetNewResizingX(aX, aY);
int32_t top = GetNewResizingY(aX, aY);
int32_t width = GetNewResizingWidth(aX, aY);
int32_t height = GetNewResizingHeight(aX, aY);
bool setWidth =
!mResizedObjectIsAbsolutelyPositioned || (width != mResizedObjectWidth);
bool setHeight =
!mResizedObjectIsAbsolutelyPositioned || (height != mResizedObjectHeight);
int32_t x, y;
x = left - ((mResizedObjectIsAbsolutelyPositioned)
? mResizedObjectBorderLeft + mResizedObjectMarginLeft
: 0);
y = top - ((mResizedObjectIsAbsolutelyPositioned)
? mResizedObjectBorderTop + mResizedObjectMarginTop
: 0);
// we want one transaction only from a user's point of view
AutoPlaceholderBatch treatAsOneTransaction(
*this, ScrollSelectionIntoView::Yes, __FUNCTION__);
RefPtr<Element> resizedElement(mResizedObject);
RefPtr<nsStyledElement> resizedStyleElement =
nsStyledElement::FromNodeOrNull(mResizedObject);
if (mResizedObjectIsAbsolutelyPositioned && resizedStyleElement) {
if (setHeight) {
nsresult rv = CSSEditUtils::SetCSSPropertyPixelsWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::top, y);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"top) destoyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::top) "
"failed, but ignored");
}
if (setWidth) {
nsresult rv = CSSEditUtils::SetCSSPropertyPixelsWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::left, x);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"left) destoyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::left) "
"failed, but ignored");
}
}
if (IsCSSEnabled() || mResizedObjectIsAbsolutelyPositioned) {
if (setWidth && resizedElement->HasAttr(nsGkAtoms::width)) {
nsresult rv =
RemoveAttributeWithTransaction(*resizedElement, *nsGkAtoms::width);
if (MOZ_UNLIKELY(rv == NS_ERROR_EDITOR_DESTROYED)) {
NS_WARNING(
"EditorBase::RemoveAttributeWithTransaction(nsGkAtoms::width) "
"failed");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"EditorBase::RemoveAttributeWithTransaction(nsGkAtoms::width) "
"failed, but ignored");
}
if (setHeight && resizedElement->HasAttr(nsGkAtoms::height)) {
nsresult rv =
RemoveAttributeWithTransaction(*resizedElement, *nsGkAtoms::height);
if (MOZ_UNLIKELY(rv == NS_ERROR_EDITOR_DESTROYED)) {
NS_WARNING(
"EditorBase::RemoveAttributeWithTransaction(nsGkAtoms::height) "
"failed");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"EditorBase::RemoveAttributeWithTransaction(nsGkAtoms::height) "
"failed, but ignored");
}
if (resizedStyleElement) {
if (setWidth) {
nsresult rv = CSSEditUtils::SetCSSPropertyPixelsWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::width, width);
if (NS_FAILED(rv)) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"width) destoyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixels(nsGkAtoms::width) "
"failed, but ignored");
}
if (setHeight) {
nsresult rv = CSSEditUtils::SetCSSPropertyPixelsWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::height, height);
if (NS_FAILED(rv)) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"height) destoyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixels(nsGkAtoms::height) "
"failed, but ignored");
}
}
} else {
// we use HTML size and remove all equivalent CSS properties
// we set the CSS width and height to remove it later,
// triggering an immediate reflow; otherwise, we have problems
// with asynchronous reflow
if (resizedStyleElement) {
if (setWidth) {
nsresult rv = CSSEditUtils::SetCSSPropertyPixelsWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::width, width);
if (NS_FAILED(rv)) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"width) destoyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"width) failed, but ignored");
}
if (setHeight) {
nsresult rv = CSSEditUtils::SetCSSPropertyPixelsWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::height, height);
if (NS_FAILED(rv)) {
NS_WARNING(
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"height) destoyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::SetCSSPropertyPixelsWithTransaction(nsGkAtoms::"
"height) failed, but ignored");
}
}
if (setWidth) {
nsAutoString w;
w.AppendInt(width);
DebugOnly<nsresult> rvIgnored =
SetAttributeWithTransaction(*resizedElement, *nsGkAtoms::width, w);
if (NS_WARN_IF(Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"EditorBase::SetAttributeWithTransaction(nsGkAtoms::width) "
"failed, but ignored");
}
if (setHeight) {
nsAutoString h;
h.AppendInt(height);
DebugOnly<nsresult> rvIgnored =
SetAttributeWithTransaction(*resizedElement, *nsGkAtoms::height, h);
if (NS_WARN_IF(Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rvIgnored),
"EditorBase::SetAttributeWithTransaction(nsGkAtoms::height) "
"failed, but ignored");
}
if (resizedStyleElement) {
if (setWidth) {
nsresult rv = CSSEditUtils::RemoveCSSPropertyWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::width, u""_ns);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::RemoveCSSPropertyWithTransaction(nsGkAtoms::width)"
" destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::RemoveCSSPropertyWithTransaction(nsGkAtoms::width) "
"failed, but ignored");
}
if (setHeight) {
nsresult rv = CSSEditUtils::RemoveCSSPropertyWithTransaction(
*this, *resizedStyleElement, *nsGkAtoms::height, u""_ns);
if (rv == NS_ERROR_EDITOR_DESTROYED) {
NS_WARNING(
"CSSEditUtils::RemoveCSSPropertyWithTransaction(nsGkAtoms::"
"height) destroyed the editor");
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"CSSEditUtils::RemoveCSSPropertyWithTransaction(nsGkAtoms::height) "
"failed, but ignored");
}
}
}
// keep track of that size
mResizedObjectWidth = width;
mResizedObjectHeight = height;
nsresult rv = RefreshResizersInternal();
if (rv == NS_ERROR_EDITOR_DESTROYED) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_WARNING_ASSERTION(
NS_SUCCEEDED(rv),
"HTMLEditor::RefreshResizersInternal() failed, but ignored");
return NS_OK;
}
NS_IMETHODIMP HTMLEditor::GetObjectResizingEnabled(
bool* aIsObjectResizingEnabled) {
*aIsObjectResizingEnabled = IsObjectResizerEnabled();
return NS_OK;
}
NS_IMETHODIMP HTMLEditor::SetObjectResizingEnabled(
bool aObjectResizingEnabled) {
EnableObjectResizer(aObjectResizingEnabled);
return NS_OK;
}
#undef kTopLeft
#undef kTop
#undef kTopRight
#undef kLeft
#undef kRight
#undef kBottomLeft
#undef kBottom
#undef kBottomRight
} // namespace mozilla
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