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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 "HTMLEditorEventListener.h"
#include "HTMLEditUtils.h"
#include "mozilla/HTMLEditor.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/Selection.h"
#include "nsCOMPtr.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsIDOMElement.h"
#include "nsIDOMEvent.h"
#include "nsIDOMEventTarget.h"
#include "nsIDOMMouseEvent.h"
#include "nsIDOMNode.h"
#include "nsIEditor.h"
#include "nsIHTMLInlineTableEditor.h"
#include "nsIHTMLObjectResizer.h"
#include "nsISupportsImpl.h"
#include "nsLiteralString.h"
#include "nsQueryObject.h"
#include "nsRange.h"
namespace mozilla {
using namespace dom;
#ifdef DEBUG
nsresult
HTMLEditorEventListener::Connect(EditorBase* aEditorBase)
{
nsCOMPtr<nsIHTMLEditor> htmlEditor = do_QueryObject(aEditorBase);
nsCOMPtr<nsIHTMLInlineTableEditor> htmlInlineTableEditor =
do_QueryObject(aEditorBase);
NS_PRECONDITION(htmlEditor && htmlInlineTableEditor,
"Set HTMLEditor or its sub class");
return EditorEventListener::Connect(aEditorBase);
}
#endif
HTMLEditor*
HTMLEditorEventListener::GetHTMLEditor()
{
// mEditor must be HTMLEditor or its subclass.
return static_cast<HTMLEditor*>(mEditorBase);
}
nsresult
HTMLEditorEventListener::MouseUp(nsIDOMMouseEvent* aMouseEvent)
{
if (DetachedFromEditor()) {
return NS_OK;
}
// FYI: We need to notify HTML editor of mouseup even if it's consumed
// because HTML editor always needs to release grabbing resizer.
HTMLEditor* htmlEditor = GetHTMLEditor();
nsCOMPtr<nsIDOMEventTarget> target;
nsresult rv = aMouseEvent->AsEvent()->GetTarget(getter_AddRefs(target));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(target, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(target);
int32_t clientX, clientY;
aMouseEvent->GetClientX(&clientX);
aMouseEvent->GetClientY(&clientY);
htmlEditor->MouseUp(clientX, clientY, element);
return EditorEventListener::MouseUp(aMouseEvent);
}
nsresult
HTMLEditorEventListener::MouseDown(nsIDOMMouseEvent* aMouseEvent)
{
if (NS_WARN_IF(!aMouseEvent) || DetachedFromEditor()) {
return NS_OK;
}
WidgetMouseEvent* mousedownEvent =
aMouseEvent->AsEvent()->WidgetEventPtr()->AsMouseEvent();
HTMLEditor* htmlEditor = GetHTMLEditor();
// Contenteditable should disregard mousedowns outside it.
// IsAcceptableInputEvent() checks it for a mouse event.
if (!htmlEditor->IsAcceptableInputEvent(mousedownEvent)) {
// If it's not acceptable mousedown event (including when mousedown event
// is fired outside of the active editing host), we need to commit
// composition because it will be change the selection to the clicked
// point. Then, we won't be able to commit the composition.
return EditorEventListener::MouseDown(aMouseEvent);
}
// XXX This method may change selection. So, we need to commit composition
// here, first.
// Detect only "context menu" click
// XXX This should be easier to do!
// But eDOMEvents_contextmenu and eContextMenu is not exposed in any event
// interface :-(
int16_t buttonNumber;
nsresult rv = aMouseEvent->GetButton(&buttonNumber);
NS_ENSURE_SUCCESS(rv, rv);
bool isContextClick = buttonNumber == 2;
int32_t clickCount;
rv = aMouseEvent->GetDetail(&clickCount);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMEventTarget> target;
rv = aMouseEvent->AsEvent()->GetExplicitOriginalTarget(getter_AddRefs(target));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(target, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(target);
if (isContextClick || (buttonNumber == 0 && clickCount == 2)) {
RefPtr<Selection> selection = htmlEditor->GetSelection();
NS_ENSURE_TRUE(selection, NS_OK);
// Get location of mouse within target node
nsCOMPtr<nsIDOMNode> parent;
rv = aMouseEvent->GetRangeParent(getter_AddRefs(parent));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(parent, NS_ERROR_FAILURE);
int32_t offset = 0;
rv = aMouseEvent->GetRangeOffset(&offset);
NS_ENSURE_SUCCESS(rv, rv);
// Detect if mouse point is within current selection for context click
bool nodeIsInSelection = false;
if (isContextClick && !selection->Collapsed()) {
int32_t rangeCount;
rv = selection->GetRangeCount(&rangeCount);
NS_ENSURE_SUCCESS(rv, rv);
for (int32_t i = 0; i < rangeCount; i++) {
RefPtr<nsRange> range = selection->GetRangeAt(i);
if (!range) {
// Don't bail yet, iterate through them all
continue;
}
range->IsPointInRange(parent, offset, &nodeIsInSelection);
// Done when we find a range that we are in
if (nodeIsInSelection) {
break;
}
}
}
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(target);
if (node && !nodeIsInSelection) {
if (!element) {
if (isContextClick) {
// Set the selection to the point under the mouse cursor:
selection->Collapse(parent, offset);
} else {
// Get enclosing link if in text so we can select the link
nsCOMPtr<nsIDOMElement> linkElement;
rv = htmlEditor->GetElementOrParentByTagName(
NS_LITERAL_STRING("href"), node,
getter_AddRefs(linkElement));
NS_ENSURE_SUCCESS(rv, rv);
if (linkElement) {
element = linkElement;
}
}
}
// Select entire element clicked on if NOT within an existing selection
// and not the entire body, or table-related elements
if (element) {
nsCOMPtr<nsIDOMNode> selectAllNode =
htmlEditor->FindUserSelectAllNode(element);
if (selectAllNode) {
nsCOMPtr<nsIDOMElement> newElement = do_QueryInterface(selectAllNode);
if (newElement) {
node = selectAllNode;
element = newElement;
}
}
if (isContextClick && !HTMLEditUtils::IsImage(node)) {
selection->Collapse(parent, offset);
} else {
htmlEditor->SelectElement(element);
}
if (DetachedFromEditor()) {
return NS_OK;
}
}
}
// HACK !!! Context click places the caret but the context menu consumes
// the event; so we need to check resizing state ourselves
htmlEditor->CheckSelectionStateForAnonymousButtons(selection);
// Prevent bubbling if we changed selection or
// for all context clicks
if (element || isContextClick) {
aMouseEvent->AsEvent()->PreventDefault();
return NS_OK;
}
} else if (!isContextClick && buttonNumber == 0 && clickCount == 1) {
// if the target element is an image, we have to display resizers
int32_t clientX, clientY;
aMouseEvent->GetClientX(&clientX);
aMouseEvent->GetClientY(&clientY);
htmlEditor->MouseDown(clientX, clientY, element, aMouseEvent->AsEvent());
}
return EditorEventListener::MouseDown(aMouseEvent);
}
nsresult
HTMLEditorEventListener::MouseClick(nsIDOMMouseEvent* aMouseEvent)
{
nsCOMPtr<nsIDOMEventTarget> target;
nsresult rv = aMouseEvent->AsEvent()->GetTarget(getter_AddRefs(target));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(target, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(target);
GetHTMLEditor()->DoInlineTableEditingAction(element);
return EditorEventListener::MouseClick(aMouseEvent);
}
} // namespace mozilla
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