mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-09-21 04:20:41 +02:00
357 lines
12 KiB
C++
357 lines
12 KiB
C++
/* -*- 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):
|
|
* Original Author: Daniel Glazman <glazman@netscape.com>
|
|
*
|
|
* 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 "ChangeCSSInlineStyleTxn.h"
|
|
#include "nsIDOMElement.h"
|
|
#include "nsIDOMCSSStyleDeclaration.h"
|
|
#include "nsIDOMElementCSSInlineStyle.h"
|
|
#include "nsReadableUtils.h"
|
|
#include "nsUnicharUtils.h"
|
|
#include "nsCRT.h"
|
|
#include "nsIAtom.h"
|
|
|
|
#define kNullCh (PRUnichar('\0'))
|
|
|
|
void
|
|
ChangeCSSInlineStyleTxn::AppendDeclaration(nsAString & aOutputString,
|
|
const nsAString & aProperty,
|
|
const nsAString & aValues)
|
|
{
|
|
aOutputString.Append(aProperty
|
|
+ NS_LITERAL_STRING(": ")
|
|
+ aValues
|
|
+ NS_LITERAL_STRING("; "));
|
|
}
|
|
|
|
// answers true if aValue is in the string list of white-space separated values aValueList
|
|
// a case-sensitive search is performed if aCaseSensitive is true
|
|
PRBool
|
|
ChangeCSSInlineStyleTxn::ValueIncludes(const nsAString &aValueList, const nsAString &aValue, PRBool aCaseSensitive)
|
|
{
|
|
nsAutoString valueList(aValueList);
|
|
PRBool result = PR_FALSE;
|
|
|
|
valueList.Append(kNullCh); // put an extra null at the end
|
|
|
|
PRUnichar *value = ToNewUnicode(aValue);
|
|
PRUnichar *start = valueList.BeginWriting();
|
|
PRUnichar *end = start;
|
|
|
|
while (kNullCh != *start) {
|
|
while ((kNullCh != *start) && nsCRT::IsAsciiSpace(*start)) { // skip leading space
|
|
start++;
|
|
}
|
|
end = start;
|
|
|
|
while ((kNullCh != *end) && (PR_FALSE == nsCRT::IsAsciiSpace(*end))) { // look for space or end
|
|
end++;
|
|
}
|
|
*end = kNullCh; // end string here
|
|
|
|
if (start < end) {
|
|
if (aCaseSensitive) {
|
|
if (!nsCRT::strcmp(value, start)) {
|
|
result = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
if (nsDependentString(value).Equals(nsDependentString(start),
|
|
nsCaseInsensitiveStringComparator())) {
|
|
result = PR_TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
start = ++end;
|
|
}
|
|
NS_Free(value);
|
|
return result;
|
|
}
|
|
|
|
// removes the value aRemoveValue from the string list of white-space separated values aValueList
|
|
void
|
|
ChangeCSSInlineStyleTxn::RemoveValueFromListOfValues(nsAString & aValues, const nsAString & aRemoveValue)
|
|
{
|
|
nsAutoString classStr(aValues); // copy to work buffer nsAutoString rv(aRemoveValue);
|
|
nsAutoString outString;
|
|
classStr.Append(kNullCh); // put an extra null at the end
|
|
|
|
PRUnichar *start = classStr.BeginWriting();
|
|
PRUnichar *end = start;
|
|
|
|
while (kNullCh != *start) {
|
|
while ((kNullCh != *start) && nsCRT::IsAsciiSpace(*start)) { // skip leading space
|
|
start++;
|
|
}
|
|
end = start;
|
|
|
|
while ((kNullCh != *end) && (PR_FALSE == nsCRT::IsAsciiSpace(*end))) { // look for space or end
|
|
end++;
|
|
}
|
|
*end = kNullCh; // end string here
|
|
|
|
if (start < end) {
|
|
if (!aRemoveValue.Equals(start)) {
|
|
outString.Append(start);
|
|
outString.Append(PRUnichar(' '));
|
|
}
|
|
}
|
|
|
|
start = ++end;
|
|
}
|
|
aValues.Assign(outString);
|
|
}
|
|
|
|
ChangeCSSInlineStyleTxn::ChangeCSSInlineStyleTxn()
|
|
: EditTxn()
|
|
{
|
|
}
|
|
|
|
ChangeCSSInlineStyleTxn::~ChangeCSSInlineStyleTxn()
|
|
{
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeCSSInlineStyleTxn::Init(nsIEditor *aEditor,
|
|
nsIDOMElement *aElement,
|
|
nsIAtom *aProperty,
|
|
const nsAString& aValue,
|
|
PRBool aRemoveProperty)
|
|
{
|
|
NS_ASSERTION(aEditor && aElement, "bad arg");
|
|
if (!aEditor || !aElement) { return NS_ERROR_NULL_POINTER; }
|
|
|
|
mEditor = aEditor;
|
|
mElement = do_QueryInterface(aElement);
|
|
mProperty = aProperty;
|
|
NS_ADDREF(mProperty);
|
|
mValue.Assign(aValue);
|
|
mRemoveProperty = aRemoveProperty;
|
|
mUndoAttributeWasSet = PR_FALSE;
|
|
mRedoAttributeWasSet = PR_FALSE;
|
|
mUndoValue.Truncate();
|
|
mRedoValue.Truncate();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeCSSInlineStyleTxn::DoTransaction(void)
|
|
{
|
|
NS_ASSERTION(mEditor && mElement, "bad state");
|
|
if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
nsCOMPtr<nsIDOMElementCSSInlineStyle> inlineStyles = do_QueryInterface(mElement);
|
|
if (!inlineStyles) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsCOMPtr<nsIDOMCSSStyleDeclaration> cssDecl;
|
|
nsresult result = inlineStyles->GetStyle(getter_AddRefs(cssDecl));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!cssDecl) return NS_ERROR_NULL_POINTER;
|
|
|
|
nsAutoString propertyNameString;
|
|
mProperty->ToString(propertyNameString);
|
|
|
|
NS_NAMED_LITERAL_STRING(styleAttr, "style");
|
|
result = mElement->HasAttribute(styleAttr, &mUndoAttributeWasSet);
|
|
if (NS_FAILED(result)) return result;
|
|
|
|
nsAutoString values;
|
|
result = cssDecl->GetPropertyValue(propertyNameString, values);
|
|
if (NS_FAILED(result)) return result;
|
|
mUndoValue.Assign(values);
|
|
|
|
// does this property accept more than 1 value ?
|
|
// we need to know that because of bug 62682
|
|
PRBool multiple = AcceptsMoreThanOneValue(mProperty);
|
|
|
|
if (mRemoveProperty) {
|
|
nsAutoString returnString;
|
|
if (multiple) {
|
|
// the property can have more than one value, let's remove only
|
|
// the value we have to remove and not the others
|
|
|
|
// the 2 lines below are a workaround because nsDOMCSSDeclaration::GetPropertyCSSValue
|
|
// is not yet implemented (bug 62682)
|
|
RemoveValueFromListOfValues(values, NS_LITERAL_STRING("none"));
|
|
RemoveValueFromListOfValues(values, mValue);
|
|
if (values.IsEmpty()) {
|
|
result = cssDecl->RemoveProperty(propertyNameString, returnString);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
else {
|
|
nsAutoString priority;
|
|
result = cssDecl->GetPropertyPriority(propertyNameString, priority);
|
|
if (NS_FAILED(result)) return result;
|
|
result = cssDecl->SetProperty(propertyNameString, values,
|
|
priority);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
}
|
|
else {
|
|
result = cssDecl->RemoveProperty(propertyNameString, returnString);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
}
|
|
else {
|
|
nsAutoString priority;
|
|
result = cssDecl->GetPropertyPriority(propertyNameString, priority);
|
|
if (NS_FAILED(result)) return result;
|
|
if (multiple) {
|
|
// the property can have more than one value, let's add
|
|
// the value we have to add to the others
|
|
|
|
// the line below is a workaround because nsDOMCSSDeclaration::GetPropertyCSSValue
|
|
// is not yet implemented (bug 62682)
|
|
AddValueToMultivalueProperty(values, mValue);
|
|
}
|
|
else
|
|
values.Assign(mValue);
|
|
result = cssDecl->SetProperty(propertyNameString, values,
|
|
priority);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
|
|
// let's be sure we don't keep an empty style attribute
|
|
PRUint32 length;
|
|
result = cssDecl->GetLength(&length);
|
|
if (NS_FAILED(result)) return result;
|
|
if (!length) {
|
|
result = mElement->RemoveAttribute(styleAttr);
|
|
if (NS_FAILED(result)) return result;
|
|
}
|
|
else
|
|
mRedoAttributeWasSet = PR_TRUE;
|
|
|
|
return cssDecl->GetPropertyValue(propertyNameString, mRedoValue);
|
|
}
|
|
|
|
nsresult ChangeCSSInlineStyleTxn::SetStyle(PRBool aAttributeWasSet,
|
|
nsAString & aValue)
|
|
{
|
|
NS_ASSERTION(mEditor && mElement, "bad state");
|
|
if (!mEditor || !mElement) { return NS_ERROR_NOT_INITIALIZED; }
|
|
|
|
nsresult result;
|
|
if (aAttributeWasSet) {
|
|
// the style attribute was set and not empty, let's recreate the declaration
|
|
nsAutoString propertyNameString;
|
|
mProperty->ToString(propertyNameString);
|
|
|
|
nsCOMPtr<nsIDOMElementCSSInlineStyle> inlineStyles = do_QueryInterface(mElement);
|
|
if (!inlineStyles) return NS_ERROR_NULL_POINTER;
|
|
nsCOMPtr<nsIDOMCSSStyleDeclaration> cssDecl;
|
|
result = inlineStyles->GetStyle(getter_AddRefs(cssDecl));
|
|
if (NS_FAILED(result)) return result;
|
|
if (!cssDecl) return NS_ERROR_NULL_POINTER;
|
|
|
|
if (aValue.IsEmpty()) {
|
|
// an empty value means we have to remove the property
|
|
nsAutoString returnString;
|
|
result = cssDecl->RemoveProperty(propertyNameString, returnString);
|
|
}
|
|
else {
|
|
// let's recreate the declaration as it was
|
|
nsAutoString priority;
|
|
result = cssDecl->GetPropertyPriority(propertyNameString, priority);
|
|
if (NS_FAILED(result)) return result;
|
|
result = cssDecl->SetProperty(propertyNameString, aValue, priority);
|
|
}
|
|
}
|
|
else
|
|
result = mElement->RemoveAttribute(NS_LITERAL_STRING("style"));
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeCSSInlineStyleTxn::UndoTransaction(void)
|
|
{
|
|
return SetStyle(mUndoAttributeWasSet, mUndoValue);
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeCSSInlineStyleTxn::RedoTransaction(void)
|
|
{
|
|
return SetStyle(mRedoAttributeWasSet, mRedoValue);
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeCSSInlineStyleTxn::Merge(nsITransaction *aTransaction, PRBool *aDidMerge)
|
|
{
|
|
if (aDidMerge)
|
|
*aDidMerge = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP ChangeCSSInlineStyleTxn::GetTxnDescription(nsAString& aString)
|
|
{
|
|
aString.AssignLiteral("ChangeCSSInlineStyleTxn: [mRemoveProperty == ");
|
|
|
|
if (!mRemoveProperty)
|
|
aString.AppendLiteral("false] ");
|
|
else
|
|
aString.AppendLiteral("true] ");
|
|
nsAutoString tempString;
|
|
mProperty->ToString(tempString);
|
|
aString += tempString;
|
|
return NS_OK;
|
|
}
|
|
|
|
// answers true if the CSS property accepts more than one value
|
|
PRBool
|
|
ChangeCSSInlineStyleTxn::AcceptsMoreThanOneValue(nsIAtom *aCSSProperty)
|
|
{
|
|
nsIAtom * textDecorationAtom = NS_NewAtom("text-decoration");
|
|
PRBool res = (textDecorationAtom == aCSSProperty);
|
|
NS_IF_RELEASE(textDecorationAtom);
|
|
return res;
|
|
}
|
|
|
|
// adds the value aNewValue to the list of white-space separated values aValues
|
|
NS_IMETHODIMP
|
|
ChangeCSSInlineStyleTxn::AddValueToMultivalueProperty(nsAString & aValues, const nsAString & aNewValue)
|
|
{
|
|
if (aValues.IsEmpty()
|
|
|| aValues.LowerCaseEqualsLiteral("none")) {
|
|
// the list of values is empty of the value is 'none'
|
|
aValues.Assign(aNewValue);
|
|
}
|
|
else if (!ValueIncludes(aValues, aNewValue, PR_FALSE)) {
|
|
// we already have another value but not this one; add it
|
|
aValues.Append(PRUnichar(' '));
|
|
aValues.Append(aNewValue);
|
|
}
|
|
return NS_OK;
|
|
}
|