gecko-dev/editor/libeditor/html/nsHTMLInlineTableEditor.cpp

288 строки
10 KiB
C++

/* ***** 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.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Daniel Glazman (glazman@netscape.com) (Original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 "nsHTMLEditor.h"
#include "nsIDOMNSHTMLElement.h"
#include "nsIDOMEventTarget.h"
#include "nsIPresShell.h"
#include "nsIDocumentObserver.h"
#include "nsIContent.h"
#include "nsHTMLEditUtils.h"
#include "nsReadableUtils.h"
// Uncomment the following line if you want to disable
// table deletion when the only column/row is removed
// #define DISABLE_TABLE_DELETION 1
NS_IMETHODIMP
nsHTMLEditor::SetInlineTableEditingEnabled(PRBool aIsEnabled)
{
mIsInlineTableEditingEnabled = aIsEnabled;
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditor::GetInlineTableEditingEnabled(PRBool * aIsEnabled)
{
*aIsEnabled = mIsInlineTableEditingEnabled;
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditor::ShowInlineTableEditingUI(nsIDOMElement * aCell)
{
NS_ENSURE_ARG_POINTER(aCell);
// do nothing if aCell is not a table cell...
if (!nsHTMLEditUtils::IsTableCell(aCell))
return NS_OK;
// the resizers and the shadow will be anonymous children of the body
nsIDOMElement *bodyElement = GetRoot();
if (!bodyElement) return NS_ERROR_NULL_POINTER;
CreateAnonymousElement(NS_LITERAL_STRING("a"), bodyElement,
NS_LITERAL_STRING("mozTableAddColumnBefore"),
PR_FALSE, getter_AddRefs(mAddColumnBeforeButton));
CreateAnonymousElement(NS_LITERAL_STRING("a"), bodyElement,
NS_LITERAL_STRING("mozTableRemoveColumn"),
PR_FALSE, getter_AddRefs(mRemoveColumnButton));
CreateAnonymousElement(NS_LITERAL_STRING("a"), bodyElement,
NS_LITERAL_STRING("mozTableAddColumnAfter"),
PR_FALSE, getter_AddRefs(mAddColumnAfterButton));
CreateAnonymousElement(NS_LITERAL_STRING("a"), bodyElement,
NS_LITERAL_STRING("mozTableAddRowBefore"),
PR_FALSE, getter_AddRefs(mAddRowBeforeButton));
CreateAnonymousElement(NS_LITERAL_STRING("a"), bodyElement,
NS_LITERAL_STRING("mozTableRemoveRow"),
PR_FALSE, getter_AddRefs(mRemoveRowButton));
CreateAnonymousElement(NS_LITERAL_STRING("a"), bodyElement,
NS_LITERAL_STRING("mozTableAddRowAfter"),
PR_FALSE, getter_AddRefs(mAddRowAfterButton));
AddMouseClickListener(mAddColumnBeforeButton);
AddMouseClickListener(mRemoveColumnButton);
AddMouseClickListener(mAddColumnAfterButton);
AddMouseClickListener(mAddRowBeforeButton);
AddMouseClickListener(mRemoveRowButton);
AddMouseClickListener(mAddRowAfterButton);
mInlineEditedCell = aCell;
return RefreshInlineTableEditingUI();
}
NS_IMETHODIMP
nsHTMLEditor::HideInlineTableEditingUI()
{
mInlineEditedCell = nsnull;
RemoveMouseClickListener(mAddColumnBeforeButton);
RemoveMouseClickListener(mRemoveColumnButton);
RemoveMouseClickListener(mAddColumnAfterButton);
RemoveMouseClickListener(mAddRowBeforeButton);
RemoveMouseClickListener(mRemoveRowButton);
RemoveMouseClickListener(mAddRowAfterButton);
// get the presshell's document observer interface.
nsCOMPtr<nsIPresShell> ps = do_QueryReferent(mPresShellWeak);
if (!ps) return NS_ERROR_NOT_INITIALIZED;
nsCOMPtr<nsIDocumentObserver> docObserver(do_QueryInterface(ps));
if (!docObserver) return NS_ERROR_FAILURE;
// get the root content node.
nsIDOMElement *bodyElement = GetRoot();
nsCOMPtr<nsIContent> bodyContent( do_QueryInterface(bodyElement) );
if (!bodyContent) return NS_ERROR_FAILURE;
DeleteRefToAnonymousNode(mAddColumnBeforeButton, bodyContent, docObserver);
mAddColumnBeforeButton = nsnull;
DeleteRefToAnonymousNode(mRemoveColumnButton, bodyContent, docObserver);
mRemoveColumnButton = nsnull;
DeleteRefToAnonymousNode(mAddColumnAfterButton, bodyContent, docObserver);
mAddColumnAfterButton = nsnull;
DeleteRefToAnonymousNode(mAddRowBeforeButton, bodyContent, docObserver);
mAddRowBeforeButton = nsnull;
DeleteRefToAnonymousNode(mRemoveRowButton, bodyContent, docObserver);
mRemoveRowButton = nsnull;
DeleteRefToAnonymousNode(mAddRowAfterButton, bodyContent, docObserver);
mAddRowAfterButton = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsHTMLEditor::DoInlineTableEditingAction(nsIDOMElement * aElement)
{
NS_ENSURE_ARG_POINTER(aElement);
PRBool anonElement = PR_FALSE;
if (aElement &&
NS_SUCCEEDED(aElement->HasAttribute(NS_LITERAL_STRING("_moz_anonclass"), &anonElement)) &&
anonElement) {
nsAutoString anonclass;
nsresult res = aElement->GetAttribute(NS_LITERAL_STRING("_moz_anonclass"), anonclass);
if (NS_FAILED(res)) return res;
if (!StringBeginsWith(anonclass, NS_LITERAL_STRING("mozTable")))
return NS_OK;
nsCOMPtr<nsIDOMNode> tableNode = GetEnclosingTable(mInlineEditedCell);
nsCOMPtr<nsIDOMElement> tableElement = do_QueryInterface(tableNode);
PRInt32 rowCount, colCount;
res = GetTableSize(tableElement, &rowCount, &colCount);
if (NS_FAILED(res)) return res;
PRBool hideUI = PR_FALSE;
PRBool hideResizersWithInlineTableUI = (mResizedObject == tableElement);
if (anonclass.EqualsLiteral("mozTableAddColumnBefore"))
InsertTableColumn(1, PR_FALSE);
else if (anonclass.EqualsLiteral("mozTableAddColumnAfter"))
InsertTableColumn(1, PR_TRUE);
else if (anonclass.EqualsLiteral("mozTableAddRowBefore"))
InsertTableRow(1, PR_FALSE);
else if (anonclass.EqualsLiteral("mozTableAddRowAfter"))
InsertTableRow(1, PR_TRUE);
else if (anonclass.EqualsLiteral("mozTableRemoveColumn")) {
DeleteTableColumn(1);
#ifndef DISABLE_TABLE_DELETION
hideUI = (colCount == 1);
#endif
}
else if (anonclass.EqualsLiteral("mozTableRemoveRow")) {
DeleteTableRow(1);
#ifndef DISABLE_TABLE_DELETION
hideUI = (rowCount == 1);
#endif
}
else
return NS_OK;
if (hideUI) {
HideInlineTableEditingUI();
if (hideResizersWithInlineTableUI)
HideResizers();
}
}
return NS_OK;
}
void
nsHTMLEditor::AddMouseClickListener(nsIDOMElement * aElement)
{
nsCOMPtr<nsIDOMEventTarget> evtTarget(do_QueryInterface(aElement));
if (evtTarget)
evtTarget->AddEventListener(NS_LITERAL_STRING("click"), mMouseListenerP, PR_TRUE);
}
void
nsHTMLEditor::RemoveMouseClickListener(nsIDOMElement * aElement)
{
nsCOMPtr<nsIDOMEventTarget> evtTarget(do_QueryInterface(aElement));
if (evtTarget)
evtTarget->RemoveEventListener(NS_LITERAL_STRING("click"), mMouseListenerP, PR_TRUE);
}
NS_IMETHODIMP
nsHTMLEditor::RefreshInlineTableEditingUI()
{
nsCOMPtr<nsIDOMNSHTMLElement> nsElement = do_QueryInterface(mInlineEditedCell);
if (!nsElement) {return NS_ERROR_NULL_POINTER; }
PRInt32 xCell, yCell, wCell, hCell;
GetElementOrigin(mInlineEditedCell, xCell, yCell);
nsresult res = nsElement->GetOffsetWidth(&wCell);
if (NS_FAILED(res)) return res;
res = nsElement->GetOffsetHeight(&hCell);
if (NS_FAILED(res)) return res;
PRInt32 xHoriz = xCell + wCell/2;
PRInt32 yVert = yCell + hCell/2;
nsCOMPtr<nsIDOMNode> tableNode = GetEnclosingTable(mInlineEditedCell);
nsCOMPtr<nsIDOMElement> tableElement = do_QueryInterface(tableNode);
PRInt32 rowCount, colCount;
res = GetTableSize(tableElement, &rowCount, &colCount);
if (NS_FAILED(res)) return res;
SetAnonymousElementPosition(xHoriz-10, yCell-7, mAddColumnBeforeButton);
#ifdef DISABLE_TABLE_DELETION
NS_NAMED_LITERAL_STRING(classStr, "class");
if (colCount== 1) {
mRemoveColumnButton->SetAttribute(classStr,
NS_LITERAL_STRING("hidden"));
}
else {
PRBool hasClass = PR_FALSE;
res = mRemoveColumnButton->HasAttribute(classStr, &hasClass);
if (NS_SUCCEEDED(res) && hasClass)
mRemoveColumnButton->RemoveAttribute(classStr);
#endif
SetAnonymousElementPosition(xHoriz-4, yCell-7, mRemoveColumnButton);
#ifdef DISABLE_TABLE_DELETION
}
#endif
SetAnonymousElementPosition(xHoriz+6, yCell-7, mAddColumnAfterButton);
SetAnonymousElementPosition(xCell-7, yVert-10, mAddRowBeforeButton);
#ifdef DISABLE_TABLE_DELETION
if (rowCount== 1) {
mRemoveRowButton->SetAttribute(classStr,
NS_LITERAL_STRING("hidden"));
}
else {
PRBool hasClass = PR_FALSE;
res = mRemoveRowButton->HasAttribute(classStr, &hasClass);
if (NS_SUCCEEDED(res) && hasClass)
mRemoveRowButton->RemoveAttribute(classStr);
#endif
SetAnonymousElementPosition(xCell-7, yVert-4, mRemoveRowButton);
#ifdef DISABLE_TABLE_DELETION
}
#endif
SetAnonymousElementPosition(xCell-7, yVert+6, mAddRowAfterButton);
return NS_OK;
}