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RetroZilla/editor/libeditor/html/nsHTMLEditorStyle.cpp
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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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):
* 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 "nsUnicharUtils.h"
#include "nsHTMLEditor.h"
#include "nsHTMLEditRules.h"
#include "nsTextEditUtils.h"
#include "nsHTMLEditUtils.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMAttr.h"
#include "nsIDOMKeyListener.h"
#include "nsIDOMMouseListener.h"
#include "nsIDOMMouseEvent.h"
#include "nsISelection.h"
#include "nsISelectionPrivate.h"
#include "nsIDOMHTMLImageElement.h"
#include "nsISelectionController.h"
#include "nsICSSLoader.h"
#include "nsICSSStyleSheet.h"
#include "nsIDocumentObserver.h"
#include "TypeInState.h"
#include "nsIEnumerator.h"
#include "nsIContent.h"
#include "nsIContentIterator.h"
NS_IMETHODIMP nsHTMLEditor::AddDefaultProperty(nsIAtom *aProperty,
const nsAString & aAttribute,
const nsAString & aValue)
{
nsString outValue;
PRInt32 index;
nsString attr(aAttribute);
if (TypeInState::FindPropInList(aProperty, attr, &outValue, mDefaultStyles, index))
{
PropItem *item = (PropItem*)mDefaultStyles[index];
item->value = aValue;
}
else
{
nsString value(aValue);
PropItem *propItem = new PropItem(aProperty, attr, value);
mDefaultStyles.AppendElement((void*)propItem);
}
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::RemoveDefaultProperty(nsIAtom *aProperty,
const nsAString & aAttribute,
const nsAString & aValue)
{
nsString outValue;
PRInt32 index;
nsString attr(aAttribute);
if (TypeInState::FindPropInList(aProperty, attr, &outValue, mDefaultStyles, index))
{
PropItem *item = (PropItem*)mDefaultStyles[index];
if (item) delete item;
mDefaultStyles.RemoveElementAt(index);
}
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::RemoveAllDefaultProperties()
{
PRInt32 j, defcon = mDefaultStyles.Count();
for (j=0; j<defcon; j++)
{
PropItem *item = (PropItem*)mDefaultStyles[j];
if (item) delete item;
}
mDefaultStyles.Clear();
return NS_OK;
}
// Add the CSS style corresponding to the HTML inline style defined
// by aProperty aAttribute and aValue to the selection
NS_IMETHODIMP nsHTMLEditor::SetCSSInlineProperty(nsIAtom *aProperty,
const nsAString & aAttribute,
const nsAString & aValue)
{
PRBool useCSS;
GetIsCSSEnabled(&useCSS);
if (useCSS) {
return SetInlineProperty(aProperty, aAttribute, aValue);
}
return NS_OK;
}
NS_IMETHODIMP nsHTMLEditor::SetInlineProperty(nsIAtom *aProperty,
const nsAString & aAttribute,
const nsAString & aValue)
{
if (!aProperty) { return NS_ERROR_NULL_POINTER; }
if (!mRules) { return NS_ERROR_NOT_INITIALIZED; }
ForceCompositionEnd();
nsCOMPtr<nsISelection>selection;
nsresult res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
PRBool isCollapsed;
selection->GetIsCollapsed(&isCollapsed);
if (isCollapsed)
{
// manipulating text attributes on a collapsed selection only sets state for the next text insertion
nsString tAttr(aAttribute);//MJUDGE SCC NEED HELP
nsString tVal(aValue);//MJUDGE SCC NEED HELP
return mTypeInState->SetProp(aProperty, tAttr, tVal);
}
nsAutoEditBatch batchIt(this);
nsAutoRules beginRulesSniffing(this, kOpInsertElement, nsIEditor::eNext);
nsAutoSelectionReset selectionResetter(selection, this);
nsAutoTxnsConserveSelection dontSpazMySelection(this);
PRBool cancel, handled;
nsTextRulesInfo ruleInfo(nsTextEditRules::kSetTextProperty);
res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (NS_FAILED(res)) return res;
if (!cancel && !handled)
{
// get selection range enumerator
nsCOMPtr<nsIEnumerator> enumerator;
res = selPriv->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(res)) return res;
if (!enumerator) return NS_ERROR_FAILURE;
// loop thru the ranges in the selection
enumerator->First();
nsCOMPtr<nsISupports> currentItem;
while ((NS_ENUMERATOR_FALSE == enumerator->IsDone()))
{
res = enumerator->CurrentItem(getter_AddRefs(currentItem));
if (NS_FAILED(res)) return res;
if (!currentItem) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
// adjust range to include any ancestors who's children are entirely selected
res = PromoteInlineRange(range);
if (NS_FAILED(res)) return res;
// check for easy case: both range endpoints in same text node
nsCOMPtr<nsIDOMNode> startNode, endNode;
res = range->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = range->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
if ((startNode == endNode) && IsTextNode(startNode))
{
PRInt32 startOffset, endOffset;
range->GetStartOffset(&startOffset);
range->GetEndOffset(&endOffset);
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(startNode);
res = SetInlinePropertyOnTextNode(nodeAsText, startOffset, endOffset, aProperty, &aAttribute, &aValue);
if (NS_FAILED(res)) return res;
}
else
{
// not the easy case. range not contained in single text node.
// there are up to three phases here. There are all the nodes
// reported by the subtree iterator to be processed. And there
// are potentially a starting textnode and an ending textnode
// which are only partially contained by the range.
// lets handle the nodes reported by the iterator. These nodes
// are entirely contained in the selection range. We build up
// a list of them (since doing operations on the document during
// iteration would perturb the iterator).
nsCOMPtr<nsIContentIterator> iter =
do_CreateInstance("@mozilla.org/content/subtree-content-iterator;1", &res);
if (NS_FAILED(res)) return res;
if (!iter) return NS_ERROR_FAILURE;
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsCOMPtr<nsIDOMNode> node;
// iterate range and build up array
res = iter->Init(range);
// init returns an error if no nodes in range.
// this can easily happen with the subtree
// iterator if the selection doesn't contain
// any *whole* nodes.
if (NS_SUCCEEDED(res))
{
while (!iter->IsDone())
{
node = do_QueryInterface(iter->GetCurrentNode());
if (!node)
return NS_ERROR_FAILURE;
if (IsEditable(node))
{
arrayOfNodes.AppendObject(node);
}
iter->Next();
}
}
// first check the start parent of the range to see if it needs to
// be separately handled (it does if it's a text node, due to how the
// subtree iterator works - it will not have reported it).
if (IsTextNode(startNode) && IsEditable(startNode))
{
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(startNode);
PRInt32 startOffset;
PRUint32 textLen;
range->GetStartOffset(&startOffset);
nodeAsText->GetLength(&textLen);
res = SetInlinePropertyOnTextNode(nodeAsText, startOffset, textLen, aProperty, &aAttribute, &aValue);
if (NS_FAILED(res)) return res;
}
// then loop through the list, set the property on each node
PRInt32 listCount = arrayOfNodes.Count();
PRInt32 j;
for (j = 0; j < listCount; j++)
{
node = arrayOfNodes[j];
res = SetInlinePropertyOnNode(node, aProperty, &aAttribute, &aValue);
if (NS_FAILED(res)) return res;
}
arrayOfNodes.Clear();
// last check the end parent of the range to see if it needs to
// be separately handled (it does if it's a text node, due to how the
// subtree iterator works - it will not have reported it).
if (IsTextNode(endNode) && IsEditable(endNode))
{
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(endNode);
PRInt32 endOffset;
range->GetEndOffset(&endOffset);
res = SetInlinePropertyOnTextNode(nodeAsText, 0, endOffset, aProperty, &aAttribute, &aValue);
if (NS_FAILED(res)) return res;
}
}
enumerator->Next();
}
}
if (!cancel)
{
// post-process
res = mRules->DidDoAction(selection, &ruleInfo, res);
}
return res;
}
nsresult
nsHTMLEditor::SetInlinePropertyOnTextNode( nsIDOMCharacterData *aTextNode,
PRInt32 aStartOffset,
PRInt32 aEndOffset,
nsIAtom *aProperty,
const nsAString *aAttribute,
const nsAString *aValue)
{
if (!aTextNode) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> parent;
nsresult res = aTextNode->GetParentNode(getter_AddRefs(parent));
if (NS_FAILED(res)) return res;
nsAutoString tagString;
aProperty->ToString(tagString);
if (!CanContainTag(parent, tagString)) return NS_OK;
// don't need to do anything if no characters actually selected
if (aStartOffset == aEndOffset) return NS_OK;
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aTextNode);
// don't need to do anything if property already set on node
PRBool bHasProp;
PRBool useCSS;
GetIsCSSEnabled(&useCSS);
if (useCSS &&
mHTMLCSSUtils->IsCSSEditableProperty(node, aProperty, aAttribute)) {
// the HTML styles defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for node; let's check if it carries those css styles
nsAutoString value;
if (aValue) value.Assign(*aValue);
mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(node, aProperty, aAttribute,
bHasProp, value,
COMPUTED_STYLE_TYPE);
}
else
{
nsCOMPtr<nsIDOMNode> styleNode;
IsTextPropertySetByContent(node, aProperty, aAttribute, aValue, bHasProp, getter_AddRefs(styleNode));
}
if (bHasProp) return NS_OK;
// do we need to split the text node?
PRUint32 textLen;
aTextNode->GetLength(&textLen);
nsCOMPtr<nsIDOMNode> tmp;
if ( (PRUint32)aEndOffset != textLen )
{
// we need to split off back of text node
res = SplitNode(node, aEndOffset, getter_AddRefs(tmp));
if (NS_FAILED(res)) return res;
node = tmp; // remember left node
}
if ( aStartOffset )
{
// we need to split off front of text node
res = SplitNode(node, aStartOffset, getter_AddRefs(tmp));
if (NS_FAILED(res)) return res;
}
// look for siblings that are correct type of node
nsCOMPtr<nsIDOMNode> sibling;
GetPriorHTMLSibling(node, address_of(sibling));
if (sibling && NodeIsType(sibling, aProperty) &&
HasAttrVal(sibling, aAttribute, aValue) &&
IsOnlyAttribute(sibling, aAttribute) )
{
// previous sib is already right kind of inline node; slide this over into it
res = MoveNode(node, sibling, -1);
return res;
}
sibling = nsnull;
GetNextHTMLSibling(node, address_of(sibling));
if (sibling && NodeIsType(sibling, aProperty) &&
HasAttrVal(sibling, aAttribute, aValue) &&
IsOnlyAttribute(sibling, aAttribute) )
{
// following sib is already right kind of inline node; slide this over into it
res = MoveNode(node, sibling, 0);
return res;
}
// reparent the node inside inline node with appropriate {attribute,value}
return SetInlinePropertyOnNode(node, aProperty, aAttribute, aValue);
}
nsresult
nsHTMLEditor::SetInlinePropertyOnNode( nsIDOMNode *aNode,
nsIAtom *aProperty,
const nsAString *aAttribute,
const nsAString *aValue)
{
if (!aNode || !aProperty) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> tmp;
nsAutoString tag;
aProperty->ToString(tag);
ToLowerCase(tag);
PRBool useCSS;
GetIsCSSEnabled(&useCSS);
if (useCSS)
{
// we are in CSS mode
if (mHTMLCSSUtils->IsCSSEditableProperty(aNode, aProperty, aAttribute))
{
// the HTML style defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for the node aNode
nsCOMPtr<nsIDOMNode> tmp = aNode;
if (IsTextNode(tmp))
{
// we are working on a text node and need to create a span container
// that will carry the styles
InsertContainerAbove( aNode,
address_of(tmp),
NS_LITERAL_STRING("span"),
nsnull,
nsnull);
}
nsCOMPtr<nsIDOMElement>element;
element = do_QueryInterface(tmp);
// first we have to remove occurences of the same style hint in the
// children of the aNode
res = RemoveStyleInside(tmp, aProperty, aAttribute, PR_TRUE);
if (NS_FAILED(res)) return res;
PRInt32 count;
// then we add the css styles corresponding to the HTML style request
res = mHTMLCSSUtils->SetCSSEquivalentToHTMLStyle(element, aProperty, aAttribute, aValue, &count, PR_FALSE);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMNode> nextSibling, previousSibling;
GetNextHTMLSibling(tmp, address_of(nextSibling));
GetPriorHTMLSibling(tmp, address_of(previousSibling));
if (nextSibling || previousSibling)
{
nsCOMPtr<nsIDOMNode> mergeParent;
res = tmp->GetParentNode(getter_AddRefs(mergeParent));
if (NS_FAILED(res)) return res;
if (previousSibling &&
nsEditor::NodeIsType(previousSibling, nsEditProperty::span) &&
NodesSameType(tmp, previousSibling))
{
res = JoinNodes(previousSibling, tmp, mergeParent);
if (NS_FAILED(res)) return res;
}
if (nextSibling &&
nsEditor::NodeIsType(nextSibling, nsEditProperty::span) &&
NodesSameType(tmp, nextSibling))
{
res = JoinNodes(tmp, nextSibling, mergeParent);
}
}
return res;
}
}
// dont need to do anything if property already set on node
PRBool bHasProp;
nsCOMPtr<nsIDOMNode> styleNode;
IsTextPropertySetByContent(aNode, aProperty, aAttribute, aValue, bHasProp, getter_AddRefs(styleNode));
if (bHasProp) return NS_OK;
// is it already the right kind of node, but with wrong attribute?
if (NodeIsType(aNode, aProperty))
{
// just set the attribute on it.
// but first remove any contrary style in it's children.
res = RemoveStyleInside(aNode, aProperty, aAttribute, PR_TRUE);
if (NS_FAILED(res)) return res;
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(aNode);
return SetAttribute(elem, *aAttribute, *aValue);
}
// can it be put inside inline node?
if (TagCanContain(tag, aNode))
{
nsCOMPtr<nsIDOMNode> priorNode, nextNode;
// is either of it's neighbors the right kind of node?
GetPriorHTMLSibling(aNode, address_of(priorNode));
GetNextHTMLSibling(aNode, address_of(nextNode));
if (priorNode && NodeIsType(priorNode, aProperty) &&
HasAttrVal(priorNode, aAttribute, aValue) &&
IsOnlyAttribute(priorNode, aAttribute) )
{
// previous sib is already right kind of inline node; slide this over into it
res = MoveNode(aNode, priorNode, -1);
}
else if (nextNode && NodeIsType(nextNode, aProperty) &&
HasAttrVal(nextNode, aAttribute, aValue) &&
IsOnlyAttribute(priorNode, aAttribute) )
{
// following sib is already right kind of inline node; slide this over into it
res = MoveNode(aNode, nextNode, 0);
}
else
{
// ok, chuck it in it's very own container
res = InsertContainerAbove(aNode, address_of(tmp), tag, aAttribute, aValue);
}
if (NS_FAILED(res)) return res;
return RemoveStyleInside(aNode, aProperty, aAttribute);
}
// none of the above? then cycle through the children.
nsCOMPtr<nsIDOMNodeList> childNodes;
res = aNode->GetChildNodes(getter_AddRefs(childNodes));
if (NS_FAILED(res)) return res;
if (childNodes)
{
PRInt32 j;
PRUint32 childCount;
childNodes->GetLength(&childCount);
if (childCount)
{
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsCOMPtr<nsIDOMNode> node;
// populate the list
for (j=0 ; j < (PRInt32)childCount; j++)
{
nsCOMPtr<nsIDOMNode> childNode;
res = childNodes->Item(j, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(res)) && (childNode) && IsEditable(childNode))
{
arrayOfNodes.AppendObject(childNode);
}
}
// then loop through the list, set the property on each node
PRInt32 listCount = arrayOfNodes.Count();
for (j = 0; j < listCount; j++)
{
node = arrayOfNodes[j];
res = SetInlinePropertyOnNode(node, aProperty, aAttribute, aValue);
if (NS_FAILED(res)) return res;
}
arrayOfNodes.Clear();
}
}
return res;
}
nsresult nsHTMLEditor::SplitStyleAboveRange(nsIDOMRange *inRange,
nsIAtom *aProperty,
const nsAString *aAttribute)
{
if (!inRange) return NS_ERROR_NULL_POINTER;
nsresult res;
nsCOMPtr<nsIDOMNode> startNode, endNode, origStartNode;
PRInt32 startOffset, endOffset, origStartOffset;
res = inRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = inRange->GetStartOffset(&startOffset);
if (NS_FAILED(res)) return res;
res = inRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
res = inRange->GetEndOffset(&endOffset);
if (NS_FAILED(res)) return res;
origStartNode = startNode;
origStartOffset = startOffset;
// split any matching style nodes above the start of range
{
nsAutoTrackDOMPoint tracker(mRangeUpdater, address_of(endNode), &endOffset);
res = SplitStyleAbovePoint(address_of(startNode), &startOffset, aProperty, aAttribute);
if (NS_FAILED(res)) return res;
}
// second verse, same as the first...
res = SplitStyleAbovePoint(address_of(endNode), &endOffset, aProperty, aAttribute);
if (NS_FAILED(res)) return res;
// reset the range
res = inRange->SetStart(startNode, startOffset);
if (NS_FAILED(res)) return res;
res = inRange->SetEnd(endNode, endOffset);
return res;
}
nsresult nsHTMLEditor::SplitStyleAbovePoint(nsCOMPtr<nsIDOMNode> *aNode,
PRInt32 *aOffset,
nsIAtom *aProperty, // null here means we split all properties
const nsAString *aAttribute,
nsCOMPtr<nsIDOMNode> *outLeftNode,
nsCOMPtr<nsIDOMNode> *outRightNode)
{
if (!aNode || !*aNode || !aOffset) return NS_ERROR_NULL_POINTER;
if (outLeftNode) *outLeftNode = nsnull;
if (outRightNode) *outRightNode = nsnull;
// split any matching style nodes above the node/offset
nsCOMPtr<nsIDOMNode> parent, tmp = *aNode;
PRInt32 offset;
PRBool useCSS;
GetIsCSSEnabled(&useCSS);
PRBool isSet;
while (tmp && !IsBlockNode(tmp))
{
isSet = PR_FALSE;
if (useCSS && mHTMLCSSUtils->IsCSSEditableProperty(tmp, aProperty, aAttribute)) {
// the HTML style defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for the node tmp; let's check if it carries those css styles
nsAutoString firstValue;
mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(tmp, aProperty, aAttribute,
isSet, firstValue,
SPECIFIED_STYLE_TYPE);
}
if ( (aProperty && NodeIsType(tmp, aProperty)) || // node is the correct inline prop
(aProperty == nsEditProperty::href && nsHTMLEditUtils::IsLink(tmp)) ||
// node is href - test if really <a href=...
(!aProperty && NodeIsProperty(tmp)) || // or node is any prop, and we asked to split them all
isSet) // or the style is specified in the style attribute
{
// found a style node we need to split
SplitNodeDeep(tmp, *aNode, *aOffset, &offset, PR_FALSE, outLeftNode, outRightNode);
// reset startNode/startOffset
tmp->GetParentNode(getter_AddRefs(*aNode));
*aOffset = offset;
}
tmp->GetParentNode(getter_AddRefs(parent));
tmp = parent;
}
return NS_OK;
}
PRBool nsHTMLEditor::NodeIsProperty(nsIDOMNode *aNode)
{
if (!aNode) return PR_FALSE;
if (!IsContainer(aNode)) return PR_FALSE;
if (!IsEditable(aNode)) return PR_FALSE;
if (IsBlockNode(aNode)) return PR_FALSE;
if (NodeIsType(aNode, nsEditProperty::a)) return PR_FALSE;
return PR_TRUE;
}
nsresult nsHTMLEditor::ApplyDefaultProperties()
{
nsresult res = NS_OK;
PRInt32 j, defcon = mDefaultStyles.Count();
for (j=0; j<defcon; j++)
{
PropItem *propItem = (PropItem*)mDefaultStyles[j];
if (!propItem)
return NS_ERROR_NULL_POINTER;
res = SetInlineProperty(propItem->tag, propItem->attr, propItem->value);
if (NS_FAILED(res)) return res;
}
return res;
}
nsresult nsHTMLEditor::RemoveStyleInside(nsIDOMNode *aNode,
nsIAtom *aProperty, // null here means remove all properties
const nsAString *aAttribute,
PRBool aChildrenOnly)
{
if (!aNode) return NS_ERROR_NULL_POINTER;
if (IsTextNode(aNode)) return NS_OK;
nsresult res = NS_OK;
// first process the children
nsCOMPtr<nsIDOMNode> child, tmp;
aNode->GetFirstChild(getter_AddRefs(child));
while (child)
{
// cache next sibling since we might remove child
child->GetNextSibling(getter_AddRefs(tmp));
res = RemoveStyleInside(child, aProperty, aAttribute);
if (NS_FAILED(res)) return res;
child = tmp;
}
// then process the node itself
if ( !aChildrenOnly &&
(aProperty && NodeIsType(aNode, aProperty) || // node is prop we asked for
(aProperty == nsEditProperty::href && nsHTMLEditUtils::IsLink(aNode)) || // but check for link (<a href=...)
(aProperty == nsEditProperty::name && nsHTMLEditUtils::IsNamedAnchor(aNode))) || // and for named anchors
(!aProperty && NodeIsProperty(aNode))) // or node is any prop and we asked for that
{
// if we weren't passed an attribute, then we want to
// remove any matching inlinestyles entirely
if (!aAttribute || aAttribute->IsEmpty())
{
NS_NAMED_LITERAL_STRING(styleAttr, "style");
NS_NAMED_LITERAL_STRING(classAttr, "class");
PRBool hasStyleAttr = HasAttr(aNode, &styleAttr);
PRBool hasClassAtrr = HasAttr(aNode, &classAttr);
if (aProperty &&
(hasStyleAttr || hasClassAtrr)) {
// aNode carries inline styles or a class attribute so we can't
// just remove the element... We need to create above the element
// a span that will carry those styles or class, then we can delete
// the node.
nsCOMPtr<nsIDOMNode> spanNode;
res = InsertContainerAbove(aNode, address_of(spanNode),
NS_LITERAL_STRING("span"));
if (NS_FAILED(res))
return res;
res = CloneAttribute(styleAttr, spanNode, aNode);
if (NS_FAILED(res))
return res;
res = CloneAttribute(classAttr, spanNode, aNode);
if (NS_FAILED(res))
return res;
if (hasStyleAttr)
{
// we need to remove the styles property corresponding to
// aProperty (bug 215406)
nsAutoString propertyValue;
mHTMLCSSUtils->RemoveCSSEquivalentToHTMLStyle(spanNode,
aProperty,
aAttribute,
&propertyValue,
PR_FALSE);
// remove the span if it's useless
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(spanNode);
res = RemoveElementIfNoStyleOrIdOrClass(element, nsEditProperty::span);
}
}
res = RemoveContainer(aNode);
}
// otherwise we just want to eliminate the attribute
else
{
if (HasAttr(aNode, aAttribute))
{
// if this matching attribute is the ONLY one on the node,
// then remove the whole node. Otherwise just nix the attribute.
if (IsOnlyAttribute(aNode, aAttribute))
{
res = RemoveContainer(aNode);
}
else
{
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(aNode);
if (!elem) return NS_ERROR_NULL_POINTER;
res = RemoveAttribute(elem, *aAttribute);
}
}
}
}
else {
PRBool useCSS;
GetIsCSSEnabled(&useCSS);
if (!aChildrenOnly
&& useCSS && mHTMLCSSUtils->IsCSSEditableProperty(aNode, aProperty, aAttribute)) {
// the HTML style defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for the node aNode; let's check if it carries those css styles
nsAutoString propertyValue;
PRBool isSet;
mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(aNode, aProperty, aAttribute,
isSet, propertyValue,
SPECIFIED_STYLE_TYPE);
if (isSet) {
// yes, tmp has the corresponding css declarations in its style attribute
// let's remove them
mHTMLCSSUtils->RemoveCSSEquivalentToHTMLStyle(aNode,
aProperty,
aAttribute,
&propertyValue,
PR_FALSE);
// remove the node if it is a span, if its style attribute is empty or absent,
// and if it does not have a class nor an id
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aNode);
res = RemoveElementIfNoStyleOrIdOrClass(element, nsEditProperty::span);
}
}
}
if ( aProperty == nsEditProperty::font && // or node is big or small and we are setting font size
(nsHTMLEditUtils::IsBig(aNode) || nsHTMLEditUtils::IsSmall(aNode)) &&
aAttribute->LowerCaseEqualsLiteral("size"))
{
res = RemoveContainer(aNode); // if we are setting font size, remove any nested bigs and smalls
}
return res;
}
PRBool nsHTMLEditor::IsOnlyAttribute(nsIDOMNode *aNode,
const nsAString *aAttribute)
{
if (!aNode || !aAttribute) return PR_FALSE; // ooops
nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
if (!content) return PR_FALSE; // ooops
PRInt32 nameSpaceID;
nsCOMPtr<nsIAtom> attrName, prefix;
PRUint32 i, attrCount = content->GetAttrCount();
for (i = 0; i < attrCount; ++i)
{
content->GetAttrNameAt(i, &nameSpaceID, getter_AddRefs(attrName),
getter_AddRefs(prefix));
nsAutoString attrString, tmp;
if (!attrName) continue; // ooops
attrName->ToString(attrString);
// if it's the attribute we know about, keep looking
if (attrString.Equals(*aAttribute,nsCaseInsensitiveStringComparator())) continue;
// if it's a special _moz... attribute, keep looking
attrString.Left(tmp,4);
if (tmp.LowerCaseEqualsLiteral("_moz")) continue;
// otherwise, it's another attribute, so return false
return PR_FALSE;
}
// if we made it through all of them without finding a real attribute
// other than aAttribute, then return PR_TRUE
return PR_TRUE;
}
PRBool nsHTMLEditor::HasAttr(nsIDOMNode *aNode,
const nsAString *aAttribute)
{
if (!aNode) return PR_FALSE;
if (!aAttribute || aAttribute->IsEmpty()) return PR_TRUE; // everybody has the 'null' attribute
// get element
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(aNode);
if (!elem) return PR_FALSE;
// get attribute node
nsCOMPtr<nsIDOMAttr> attNode;
nsresult res = elem->GetAttributeNode(*aAttribute, getter_AddRefs(attNode));
if ((NS_FAILED(res)) || !attNode) return PR_FALSE;
return PR_TRUE;
}
PRBool nsHTMLEditor::HasAttrVal(nsIDOMNode *aNode,
const nsAString *aAttribute,
const nsAString *aValue)
{
if (!aNode) return PR_FALSE;
if (!aAttribute || aAttribute->IsEmpty()) return PR_TRUE; // everybody has the 'null' attribute
// get element
nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(aNode);
if (!elem) return PR_FALSE;
// get attribute node
nsCOMPtr<nsIDOMAttr> attNode;
nsresult res = elem->GetAttributeNode(*aAttribute, getter_AddRefs(attNode));
if ((NS_FAILED(res)) || !attNode) return PR_FALSE;
// check if attribute has a value
PRBool isSet;
attNode->GetSpecified(&isSet);
// if no value, and that's what we wanted, then return true
if (!isSet && (!aValue || aValue->IsEmpty())) return PR_TRUE;
// get attribute value
nsAutoString attrVal;
attNode->GetValue(attrVal);
// do values match?
if (attrVal.Equals(*aValue,nsCaseInsensitiveStringComparator())) return PR_TRUE;
return PR_FALSE;
}
nsresult nsHTMLEditor::PromoteRangeIfStartsOrEndsInNamedAnchor(nsIDOMRange *inRange)
{
if (!inRange) return NS_ERROR_NULL_POINTER;
nsresult res;
nsCOMPtr<nsIDOMNode> startNode, endNode, parent, tmp;
PRInt32 startOffset, endOffset, tmpOffset;
res = inRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = inRange->GetStartOffset(&startOffset);
if (NS_FAILED(res)) return res;
res = inRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
res = inRange->GetEndOffset(&endOffset);
if (NS_FAILED(res)) return res;
tmp = startNode;
while ( tmp &&
!nsTextEditUtils::IsBody(tmp) &&
!nsHTMLEditUtils::IsNamedAnchor(tmp))
{
res = GetNodeLocation(tmp, address_of(parent), &tmpOffset);
if (NS_FAILED(res)) return res;
tmp = parent;
}
if (!tmp) return NS_ERROR_NULL_POINTER;
if (nsHTMLEditUtils::IsNamedAnchor(tmp))
{
res = GetNodeLocation(tmp, address_of(parent), &tmpOffset);
if (NS_FAILED(res)) return res;
startNode = parent;
startOffset = tmpOffset;
}
tmp = endNode;
while ( tmp &&
!nsTextEditUtils::IsBody(tmp) &&
!nsHTMLEditUtils::IsNamedAnchor(tmp))
{
res = GetNodeLocation(tmp, address_of(parent), &tmpOffset);
if (NS_FAILED(res)) return res;
tmp = parent;
}
if (!tmp) return NS_ERROR_NULL_POINTER;
if (nsHTMLEditUtils::IsNamedAnchor(tmp))
{
res = GetNodeLocation(tmp, address_of(parent), &tmpOffset);
if (NS_FAILED(res)) return res;
endNode = parent;
endOffset = tmpOffset + 1;
}
res = inRange->SetStart(startNode, startOffset);
if (NS_FAILED(res)) return res;
res = inRange->SetEnd(endNode, endOffset);
return res;
}
nsresult nsHTMLEditor::PromoteInlineRange(nsIDOMRange *inRange)
{
if (!inRange) return NS_ERROR_NULL_POINTER;
nsresult res;
nsCOMPtr<nsIDOMNode> startNode, endNode, parent;
PRInt32 startOffset, endOffset;
res = inRange->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = inRange->GetStartOffset(&startOffset);
if (NS_FAILED(res)) return res;
res = inRange->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
res = inRange->GetEndOffset(&endOffset);
if (NS_FAILED(res)) return res;
while ( startNode &&
!nsTextEditUtils::IsBody(startNode) &&
IsAtFrontOfNode(startNode, startOffset) )
{
res = GetNodeLocation(startNode, address_of(parent), &startOffset);
if (NS_FAILED(res)) return res;
startNode = parent;
}
if (!startNode) return NS_ERROR_NULL_POINTER;
while ( endNode &&
!nsTextEditUtils::IsBody(endNode) &&
IsAtEndOfNode(endNode, endOffset) )
{
res = GetNodeLocation(endNode, address_of(parent), &endOffset);
if (NS_FAILED(res)) return res;
endNode = parent;
endOffset++; // we are AFTER this node
}
if (!endNode) return NS_ERROR_NULL_POINTER;
res = inRange->SetStart(startNode, startOffset);
if (NS_FAILED(res)) return res;
res = inRange->SetEnd(endNode, endOffset);
return res;
}
PRBool nsHTMLEditor::IsAtFrontOfNode(nsIDOMNode *aNode, PRInt32 aOffset)
{
if (!aNode) return PR_FALSE; // oops
if (!aOffset) return PR_TRUE;
if (IsTextNode(aNode))
{
return PR_FALSE;
}
else
{
nsCOMPtr<nsIDOMNode> firstNode;
GetFirstEditableChild(aNode, address_of(firstNode));
if (!firstNode) return PR_TRUE;
PRInt32 offset;
nsEditor::GetChildOffset(firstNode, aNode, offset);
if (offset < aOffset) return PR_FALSE;
return PR_TRUE;
}
}
PRBool nsHTMLEditor::IsAtEndOfNode(nsIDOMNode *aNode, PRInt32 aOffset)
{
if (!aNode) return PR_FALSE; // oops
PRUint32 len;
GetLengthOfDOMNode(aNode, len);
if (aOffset == (PRInt32)len) return PR_TRUE;
if (IsTextNode(aNode))
{
return PR_FALSE;
}
else
{
nsCOMPtr<nsIDOMNode> lastNode;
GetLastEditableChild(aNode, address_of(lastNode));
if (!lastNode) return PR_TRUE;
PRInt32 offset;
nsEditor::GetChildOffset(lastNode, aNode, offset);
if (offset < aOffset) return PR_TRUE;
return PR_FALSE;
}
}
nsresult
nsHTMLEditor::GetInlinePropertyBase(nsIAtom *aProperty,
const nsAString *aAttribute,
const nsAString *aValue,
PRBool *aFirst,
PRBool *aAny,
PRBool *aAll,
nsAString *outValue,
PRBool aCheckDefaults)
{
if (!aProperty)
return NS_ERROR_NULL_POINTER;
nsresult result;
*aAny=PR_FALSE;
*aAll=PR_TRUE;
*aFirst=PR_FALSE;
PRBool first=PR_TRUE;
PRBool useCSS;
GetIsCSSEnabled(&useCSS);
nsCOMPtr<nsISelection>selection;
result = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(result)) return result;
if (!selection) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
PRBool isCollapsed;
selection->GetIsCollapsed(&isCollapsed);
nsCOMPtr<nsIDOMNode> collapsedNode;
nsCOMPtr<nsIEnumerator> enumerator;
result = selPriv->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(result)) return result;
if (!enumerator) return NS_ERROR_NULL_POINTER;
enumerator->First();
nsCOMPtr<nsISupports> currentItem;
result = enumerator->CurrentItem(getter_AddRefs(currentItem));
// XXX: should be a while loop, to get each separate range
// XXX: ERROR_HANDLING can currentItem be null?
if ((NS_SUCCEEDED(result)) && currentItem)
{
PRBool firstNodeInRange = PR_TRUE; // for each range, set a flag
nsCOMPtr<nsIDOMRange> range(do_QueryInterface(currentItem));
if (isCollapsed)
{
range->GetStartContainer(getter_AddRefs(collapsedNode));
if (!collapsedNode) return NS_ERROR_FAILURE;
PRBool isSet, theSetting;
if (aAttribute)
{
nsString tString(*aAttribute); //MJUDGE SCC NEED HELP
nsString tOutString;//MJUDGE SCC NEED HELP
nsString *tPassString=nsnull;
if (outValue)
tPassString = &tOutString;
mTypeInState->GetTypingState(isSet, theSetting, aProperty, tString, &tOutString);
if (outValue)
outValue->Assign(tOutString);
}
else
mTypeInState->GetTypingState(isSet, theSetting, aProperty);
if (isSet)
{
*aFirst = *aAny = *aAll = theSetting;
return NS_OK;
}
if (!useCSS) {
nsCOMPtr<nsIDOMNode> resultNode;
IsTextPropertySetByContent(collapsedNode, aProperty, aAttribute, aValue,
isSet, getter_AddRefs(resultNode), outValue);
*aFirst = *aAny = *aAll = isSet;
if (!isSet && aCheckDefaults)
{
// style not set, but if it is a default then it will appear if
// content is inserted, so we should report it as set (analogous to TypeInState).
PRInt32 index;
if (TypeInState::FindPropInList(aProperty, *aAttribute, outValue, mDefaultStyles, index))
{
*aFirst = *aAny = *aAll = PR_TRUE;
if (outValue)
outValue->Assign(((PropItem*)mDefaultStyles[index])->value);
}
}
return NS_OK;
}
}
// non-collapsed selection
nsCOMPtr<nsIContentIterator> iter =
do_CreateInstance("@mozilla.org/content/post-content-iterator;1");
if (!iter) return NS_ERROR_NULL_POINTER;
iter->Init(range);
nsAutoString firstValue, theValue;
nsCOMPtr<nsIDOMNode> endNode;
PRInt32 endOffset;
result = range->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(result)) return result;
result = range->GetEndOffset(&endOffset);
if (NS_FAILED(result)) return result;
while (!iter->IsDone())
{
nsIContent *content = iter->GetCurrentNode();
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(content);
if (node && nsTextEditUtils::IsBody(node))
break;
nsCOMPtr<nsIDOMCharacterData>text;
text = do_QueryInterface(content);
PRBool skipNode = PR_FALSE;
// just ignore any non-editable nodes
if (text && !IsEditable(text))
{
skipNode = PR_TRUE;
}
else if (text)
{
if (!isCollapsed && first && firstNodeInRange)
{
firstNodeInRange = PR_FALSE;
PRInt32 startOffset;
range->GetStartOffset(&startOffset);
PRUint32 count;
text->GetLength(&count);
if (startOffset==(PRInt32)count)
{
skipNode = PR_TRUE;
}
}
else if (node == endNode && !endOffset)
{
skipNode = PR_TRUE;
}
}
else if (content->IsContentOfType(nsIContent::eELEMENT))
{ // handle non-text leaf nodes here
skipNode = PR_TRUE;
}
if (!skipNode)
{
if (node)
{
PRBool isSet = PR_FALSE;
nsCOMPtr<nsIDOMNode>resultNode;
if (first)
{
if (useCSS &&
mHTMLCSSUtils->IsCSSEditableProperty(node, aProperty, aAttribute)) {
// the HTML styles defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for node; let's check if it carries those css styles
if (aValue) firstValue.Assign(*aValue);
mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(node, aProperty, aAttribute,
isSet, firstValue,
COMPUTED_STYLE_TYPE);
}
else {
IsTextPropertySetByContent(node, aProperty, aAttribute, aValue, isSet,
getter_AddRefs(resultNode), &firstValue);
}
*aFirst = isSet;
first = PR_FALSE;
if (outValue) *outValue = firstValue;
}
else
{
if (useCSS &&
mHTMLCSSUtils->IsCSSEditableProperty(node, aProperty, aAttribute)) {
// the HTML styles defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for node; let's check if it carries those css styles
if (aValue) theValue.Assign(*aValue);
mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(node, aProperty, aAttribute,
isSet, theValue,
COMPUTED_STYLE_TYPE);
}
else {
IsTextPropertySetByContent(node, aProperty, aAttribute, aValue, isSet,
getter_AddRefs(resultNode), &theValue);
}
if (firstValue != theValue)
*aAll = PR_FALSE;
}
if (isSet) {
*aAny = PR_TRUE;
}
else {
*aAll = PR_FALSE;
}
}
}
iter->Next();
}
}
if (!*aAny)
{ // make sure that if none of the selection is set, we don't report all is set
*aAll = PR_FALSE;
}
return result;
}
NS_IMETHODIMP nsHTMLEditor::GetInlineProperty(nsIAtom *aProperty,
const nsAString &aAttribute,
const nsAString &aValue,
PRBool *aFirst,
PRBool *aAny,
PRBool *aAll)
{
if (!aProperty || !aFirst || !aAny || !aAll)
return NS_ERROR_NULL_POINTER;
const nsAString *att = nsnull;
if (!aAttribute.IsEmpty())
att = &aAttribute;
const nsAString *val = nsnull;
if (!aValue.IsEmpty())
val = &aValue;
return GetInlinePropertyBase( aProperty, att, val, aFirst, aAny, aAll, nsnull);
}
NS_IMETHODIMP nsHTMLEditor::GetInlinePropertyWithAttrValue(nsIAtom *aProperty,
const nsAString &aAttribute,
const nsAString &aValue,
PRBool *aFirst,
PRBool *aAny,
PRBool *aAll,
nsAString &outValue)
{
if (!aProperty || !aFirst || !aAny || !aAll)
return NS_ERROR_NULL_POINTER;
const nsAString *att = nsnull;
if (!aAttribute.IsEmpty())
att = &aAttribute;
const nsAString *val = nsnull;
if (!aValue.IsEmpty())
val = &aValue;
return GetInlinePropertyBase( aProperty, att, val, aFirst, aAny, aAll, &outValue);
}
NS_IMETHODIMP nsHTMLEditor::RemoveAllInlineProperties()
{
nsAutoEditBatch batchIt(this);
nsAutoRules beginRulesSniffing(this, kOpResetTextProperties, nsIEditor::eNext);
nsresult res = RemoveInlinePropertyImpl(nsnull, nsnull);
if (NS_FAILED(res)) return res;
return ApplyDefaultProperties();
}
NS_IMETHODIMP nsHTMLEditor::RemoveInlineProperty(nsIAtom *aProperty, const nsAString &aAttribute)
{
return RemoveInlinePropertyImpl(aProperty, &aAttribute);
}
nsresult nsHTMLEditor::RemoveInlinePropertyImpl(nsIAtom *aProperty, const nsAString *aAttribute)
{
if (!mRules) return NS_ERROR_NOT_INITIALIZED;
ForceCompositionEnd();
nsresult res;
nsCOMPtr<nsISelection>selection;
res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
PRBool isCollapsed;
selection->GetIsCollapsed(&isCollapsed);
PRBool useCSS;
GetIsCSSEnabled(&useCSS);
if (isCollapsed)
{
// manipulating text attributes on a collapsed selection only sets state for the next text insertion
// For links, aProperty uses "href", use "a" instead
if (aProperty == nsEditProperty::href ||
aProperty == nsEditProperty::name)
aProperty = nsEditProperty::a;
if (aProperty) return mTypeInState->ClearProp(aProperty, nsAutoString(*aAttribute));
else return mTypeInState->ClearAllProps();
}
nsAutoEditBatch batchIt(this);
nsAutoRules beginRulesSniffing(this, kOpRemoveTextProperty, nsIEditor::eNext);
nsAutoSelectionReset selectionResetter(selection, this);
nsAutoTxnsConserveSelection dontSpazMySelection(this);
PRBool cancel, handled;
nsTextRulesInfo ruleInfo(nsTextEditRules::kRemoveTextProperty);
res = mRules->WillDoAction(selection, &ruleInfo, &cancel, &handled);
if (NS_FAILED(res)) return res;
if (!cancel && !handled)
{
// get selection range enumerator
nsCOMPtr<nsIEnumerator> enumerator;
res = selPriv->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(res)) return res;
if (!enumerator) return NS_ERROR_FAILURE;
// loop thru the ranges in the selection
enumerator->First();
nsCOMPtr<nsISupports> currentItem;
while ((NS_ENUMERATOR_FALSE == enumerator->IsDone()))
{
res = enumerator->CurrentItem(getter_AddRefs(currentItem));
if (NS_FAILED(res)) return res;
if (!currentItem) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
if (aProperty == nsEditProperty::name)
{
// promote range if it starts or end in a named anchor and we
// want to remove named anchors
res = PromoteRangeIfStartsOrEndsInNamedAnchor(range);
}
else {
// adjust range to include any ancestors who's children are entirely selected
res = PromoteInlineRange(range);
}
if (NS_FAILED(res)) return res;
// remove this style from ancestors of our range endpoints,
// splitting them as appropriate
res = SplitStyleAboveRange(range, aProperty, aAttribute);
if (NS_FAILED(res)) return res;
// check for easy case: both range endpoints in same text node
nsCOMPtr<nsIDOMNode> startNode, endNode;
res = range->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = range->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
if ((startNode == endNode) && IsTextNode(startNode))
{
// we're done with this range!
if (useCSS && mHTMLCSSUtils->IsCSSEditableProperty(startNode, aProperty, aAttribute)) {
// the HTML style defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for startNode
nsAutoString cssValue;
PRBool isSet = PR_FALSE;
mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(startNode,
aProperty,
aAttribute,
isSet ,
cssValue,
COMPUTED_STYLE_TYPE);
if (isSet) {
// startNode's computed style indicates the CSS equivalence to the HTML style to
// remove is applied; but we found no element in the ancestors of startNode
// carrying specified styles; assume it comes from a rule and let's try to
// insert a span "inverting" the style
nsAutoString value; value.AssignLiteral("-moz-editor-invert-value");
PRInt32 startOffset, endOffset;
range->GetStartOffset(&startOffset);
range->GetEndOffset(&endOffset);
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(startNode);
if (mHTMLCSSUtils->IsCSSInvertable(aProperty, aAttribute)) {
SetInlinePropertyOnTextNode(nodeAsText, startOffset, endOffset, aProperty, aAttribute, &value);
}
}
}
}
else
{
// not the easy case. range not contained in single text node.
nsCOMPtr<nsIContentIterator> iter =
do_CreateInstance("@mozilla.org/content/subtree-content-iterator;1", &res);
if (NS_FAILED(res)) return res;
if (!iter) return NS_ERROR_FAILURE;
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsCOMPtr<nsIDOMNode> node;
// iterate range and build up array
iter->Init(range);
while (!iter->IsDone())
{
node = do_QueryInterface(iter->GetCurrentNode());
if (!node)
return NS_ERROR_FAILURE;
if (IsEditable(node))
{
arrayOfNodes.AppendObject(node);
}
iter->Next();
}
// loop through the list, remove the property on each node
PRInt32 listCount = arrayOfNodes.Count();
PRInt32 j;
for (j = 0; j < listCount; j++)
{
node = arrayOfNodes[j];
res = RemoveStyleInside(node, aProperty, aAttribute);
if (NS_FAILED(res)) return res;
if (useCSS && mHTMLCSSUtils->IsCSSEditableProperty(node, aProperty, aAttribute)) {
// the HTML style defined by aProperty/aAttribute has a CSS equivalence
// in this implementation for node
nsAutoString cssValue;
PRBool isSet = PR_FALSE;
mHTMLCSSUtils->IsCSSEquivalentToHTMLInlineStyleSet(node,
aProperty,
aAttribute,
isSet ,
cssValue,
COMPUTED_STYLE_TYPE);
if (isSet) {
// startNode's computed style indicates the CSS equivalence to the HTML style to
// remove is applied; but we found no element in the ancestors of startNode
// carrying specified styles; assume it comes from a rule and let's try to
// insert a span "inverting" the style
if (mHTMLCSSUtils->IsCSSInvertable(aProperty, aAttribute)) {
nsAutoString value; value.AssignLiteral("-moz-editor-invert-value");
SetInlinePropertyOnNode(node, aProperty, aAttribute, &value);
}
}
}
}
arrayOfNodes.Clear();
}
enumerator->Next();
}
}
if (!cancel)
{
// post-process
res = mRules->DidDoAction(selection, &ruleInfo, res);
}
return res;
}
NS_IMETHODIMP nsHTMLEditor::IncreaseFontSize()
{
return RelativeFontChange(1);
}
NS_IMETHODIMP nsHTMLEditor::DecreaseFontSize()
{
return RelativeFontChange(-1);
}
nsresult
nsHTMLEditor::RelativeFontChange( PRInt32 aSizeChange)
{
// Can only change font size by + or - 1
if ( !( (aSizeChange==1) || (aSizeChange==-1) ) )
return NS_ERROR_ILLEGAL_VALUE;
ForceCompositionEnd();
// Get the selection
nsCOMPtr<nsISelection>selection;
nsresult res = GetSelection(getter_AddRefs(selection));
if (NS_FAILED(res)) return res;
if (!selection) return NS_ERROR_FAILURE;
nsCOMPtr<nsISelectionPrivate> selPriv(do_QueryInterface(selection));
// Is the selection collapsed?
PRBool bCollapsed;
res = selection->GetIsCollapsed(&bCollapsed);
if (NS_FAILED(res)) return res;
// if it's collapsed set typing state
if (bCollapsed)
{
nsCOMPtr<nsIAtom> atom;
if (aSizeChange==1) atom = nsEditProperty::big;
else atom = nsEditProperty::small;
// Let's see in what kind of element the selection is
PRInt32 offset;
nsCOMPtr<nsIDOMNode> selectedNode;
res = GetStartNodeAndOffset(selection, address_of(selectedNode), &offset);
if (IsTextNode(selectedNode)) {
nsCOMPtr<nsIDOMNode> parent;
res = selectedNode->GetParentNode(getter_AddRefs(parent));
if (NS_FAILED(res)) return res;
selectedNode = parent;
}
nsAutoString tag;
atom->ToString(tag);
if (!CanContainTag(selectedNode, tag)) return NS_OK;
// manipulating text attributes on a collapsed selection only sets state for the next text insertion
return mTypeInState->SetProp(atom, EmptyString(), EmptyString());
}
// wrap with txn batching, rules sniffing, and selection preservation code
nsAutoEditBatch batchIt(this);
nsAutoRules beginRulesSniffing(this, kOpSetTextProperty, nsIEditor::eNext);
nsAutoSelectionReset selectionResetter(selection, this);
nsAutoTxnsConserveSelection dontSpazMySelection(this);
// get selection range enumerator
nsCOMPtr<nsIEnumerator> enumerator;
res = selPriv->GetEnumerator(getter_AddRefs(enumerator));
if (NS_FAILED(res)) return res;
if (!enumerator) return NS_ERROR_FAILURE;
// loop thru the ranges in the selection
enumerator->First();
nsCOMPtr<nsISupports> currentItem;
while ((NS_ENUMERATOR_FALSE == enumerator->IsDone()))
{
res = enumerator->CurrentItem(getter_AddRefs(currentItem));
if (NS_FAILED(res)) return res;
if (!currentItem) return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMRange> range( do_QueryInterface(currentItem) );
// adjust range to include any ancestors who's children are entirely selected
res = PromoteInlineRange(range);
if (NS_FAILED(res)) return res;
// check for easy case: both range endpoints in same text node
nsCOMPtr<nsIDOMNode> startNode, endNode;
res = range->GetStartContainer(getter_AddRefs(startNode));
if (NS_FAILED(res)) return res;
res = range->GetEndContainer(getter_AddRefs(endNode));
if (NS_FAILED(res)) return res;
if ((startNode == endNode) && IsTextNode(startNode))
{
PRInt32 startOffset, endOffset;
range->GetStartOffset(&startOffset);
range->GetEndOffset(&endOffset);
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(startNode);
res = RelativeFontChangeOnTextNode(aSizeChange, nodeAsText, startOffset, endOffset);
if (NS_FAILED(res)) return res;
}
else
{
// not the easy case. range not contained in single text node.
// there are up to three phases here. There are all the nodes
// reported by the subtree iterator to be processed. And there
// are potentially a starting textnode and an ending textnode
// which are only partially contained by the range.
// lets handle the nodes reported by the iterator. These nodes
// are entirely contained in the selection range. We build up
// a list of them (since doing operations on the document during
// iteration would perturb the iterator).
nsCOMPtr<nsIContentIterator> iter =
do_CreateInstance("@mozilla.org/content/subtree-content-iterator;1", &res);
if (NS_FAILED(res)) return res;
if (!iter) return NS_ERROR_FAILURE;
nsCOMArray<nsIDOMNode> arrayOfNodes;
nsCOMPtr<nsIDOMNode> node;
// iterate range and build up array
res = iter->Init(range);
if (NS_SUCCEEDED(res))
{
while (!iter->IsDone())
{
node = do_QueryInterface(iter->GetCurrentNode());
if (!node)
return NS_ERROR_FAILURE;
if (IsEditable(node))
{
arrayOfNodes.AppendObject(node);
}
iter->Next();
}
// now that we have the list, do the font size change on each node
PRInt32 listCount = arrayOfNodes.Count();
PRInt32 j;
for (j = 0; j < listCount; j++)
{
node = arrayOfNodes[j];
res = RelativeFontChangeOnNode(aSizeChange, node);
if (NS_FAILED(res)) return res;
}
arrayOfNodes.Clear();
}
// now check the start and end parents of the range to see if they need to
// be separately handled (they do if they are text nodes, due to how the
// subtree iterator works - it will not have reported them).
if (IsTextNode(startNode) && IsEditable(startNode))
{
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(startNode);
PRInt32 startOffset;
PRUint32 textLen;
range->GetStartOffset(&startOffset);
nodeAsText->GetLength(&textLen);
res = RelativeFontChangeOnTextNode(aSizeChange, nodeAsText, startOffset, textLen);
if (NS_FAILED(res)) return res;
}
if (IsTextNode(endNode) && IsEditable(endNode))
{
nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(endNode);
PRInt32 endOffset;
range->GetEndOffset(&endOffset);
res = RelativeFontChangeOnTextNode(aSizeChange, nodeAsText, 0, endOffset);
if (NS_FAILED(res)) return res;
}
}
enumerator->Next();
}
return res;
}
nsresult
nsHTMLEditor::RelativeFontChangeOnTextNode( PRInt32 aSizeChange,
nsIDOMCharacterData *aTextNode,
PRInt32 aStartOffset,
PRInt32 aEndOffset)
{
// Can only change font size by + or - 1
if ( !( (aSizeChange==1) || (aSizeChange==-1) ) )
return NS_ERROR_ILLEGAL_VALUE;
if (!aTextNode) return NS_ERROR_NULL_POINTER;
// dont need to do anything if no characters actually selected
if (aStartOffset == aEndOffset) return NS_OK;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> parent;
res = aTextNode->GetParentNode(getter_AddRefs(parent));
if (NS_FAILED(res)) return res;
if (!CanContainTag(parent, NS_LITERAL_STRING("big"))) return NS_OK;
nsCOMPtr<nsIDOMNode> tmp, node = do_QueryInterface(aTextNode);
// do we need to split the text node?
PRUint32 textLen;
aTextNode->GetLength(&textLen);
// -1 is a magic value meaning to the end of node
if (aEndOffset == -1) aEndOffset = textLen;
if ( (PRUint32)aEndOffset != textLen )
{
// we need to split off back of text node
res = SplitNode(node, aEndOffset, getter_AddRefs(tmp));
if (NS_FAILED(res)) return res;
node = tmp; // remember left node
}
if ( aStartOffset )
{
// we need to split off front of text node
res = SplitNode(node, aStartOffset, getter_AddRefs(tmp));
if (NS_FAILED(res)) return res;
}
NS_NAMED_LITERAL_STRING(bigSize, "big");
NS_NAMED_LITERAL_STRING(smallSize, "small");
const nsAString& nodeType = (aSizeChange==1) ? NS_STATIC_CAST(const nsAString&, bigSize) : NS_STATIC_CAST(const nsAString&, smallSize);
// look for siblings that are correct type of node
nsCOMPtr<nsIDOMNode> sibling;
GetPriorHTMLSibling(node, address_of(sibling));
if (sibling && NodeIsType(sibling, (aSizeChange==1) ? nsEditProperty::big : nsEditProperty::small))
{
// previous sib is already right kind of inline node; slide this over into it
res = MoveNode(node, sibling, -1);
return res;
}
sibling = nsnull;
GetNextHTMLSibling(node, address_of(sibling));
if (sibling && NodeIsType(sibling, (aSizeChange==1) ? nsEditProperty::big : nsEditProperty::small))
{
// following sib is already right kind of inline node; slide this over into it
res = MoveNode(node, sibling, 0);
return res;
}
// else reparent the node inside font node with appropriate relative size
res = InsertContainerAbove(node, address_of(tmp), nodeType);
return res;
}
nsresult
nsHTMLEditor::RelativeFontChangeHelper( PRInt32 aSizeChange,
nsIDOMNode *aNode)
{
/* This routine looks for all the font nodes in the tree rooted by aNode,
including aNode itself, looking for font nodes that have the size attr
set. Any such nodes need to have big or small put inside them, since
they override any big/small that are above them.
*/
// Can only change font size by + or - 1
if ( !( (aSizeChange==1) || (aSizeChange==-1) ) )
return NS_ERROR_ILLEGAL_VALUE;
if (!aNode) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
nsAutoString tag;
if (aSizeChange == 1) tag.AssignLiteral("big");
else tag.AssignLiteral("small");
nsCOMPtr<nsIDOMNodeList> childNodes;
PRInt32 j;
PRUint32 childCount;
nsCOMPtr<nsIDOMNode> childNode;
// if this is a font node with size, put big/small inside it
NS_NAMED_LITERAL_STRING(attr, "size");
if (NodeIsType(aNode, nsEditProperty::font) && HasAttr(aNode, &attr))
{
// cycle through children and adjust relative font size
res = aNode->GetChildNodes(getter_AddRefs(childNodes));
if (NS_FAILED(res)) return res;
if (childNodes)
{
childNodes->GetLength(&childCount);
for (j=childCount-1; j>=0; j--)
{
res = childNodes->Item(j, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(res)) && (childNode))
{
res = RelativeFontChangeOnNode(aSizeChange, childNode);
if (NS_FAILED(res)) return res;
}
}
}
}
childNodes = nsnull;
// now cycle through the children.
res = aNode->GetChildNodes(getter_AddRefs(childNodes));
if (NS_FAILED(res)) return res;
if (childNodes)
{
childNodes->GetLength(&childCount);
for (j=childCount-1; j>=0; j--)
{
res = childNodes->Item(j, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(res)) && (childNode))
{
res = RelativeFontChangeHelper(aSizeChange, childNode);
if (NS_FAILED(res)) return res;
}
}
}
return res;
}
nsresult
nsHTMLEditor::RelativeFontChangeOnNode( PRInt32 aSizeChange,
nsIDOMNode *aNode)
{
// Can only change font size by + or - 1
if ( !( (aSizeChange==1) || (aSizeChange==-1) ) )
return NS_ERROR_ILLEGAL_VALUE;
if (!aNode) return NS_ERROR_NULL_POINTER;
nsresult res = NS_OK;
nsCOMPtr<nsIDOMNode> tmp;
nsAutoString tag;
if (aSizeChange == 1) tag.AssignLiteral("big");
else tag.AssignLiteral("small");
// is it the opposite of what we want?
if ( ((aSizeChange == 1) && nsHTMLEditUtils::IsSmall(aNode)) ||
((aSizeChange == -1) && nsHTMLEditUtils::IsBig(aNode)) )
{
// first populate any nested font tags that have the size attr set
res = RelativeFontChangeHelper(aSizeChange, aNode);
if (NS_FAILED(res)) return res;
// in that case, just remove this node and pull up the children
res = RemoveContainer(aNode);
return res;
}
// can it be put inside a "big" or "small"?
if (TagCanContain(tag, aNode))
{
// first populate any nested font tags that have the size attr set
res = RelativeFontChangeHelper(aSizeChange, aNode);
if (NS_FAILED(res)) return res;
// ok, chuck it in.
// first look at siblings of aNode for matching bigs or smalls.
// if we find one, move aNode into it.
nsCOMPtr<nsIDOMNode> sibling;
GetPriorHTMLSibling(aNode, address_of(sibling));
if (sibling && nsEditor::NodeIsType(sibling, (aSizeChange==1 ? nsEditProperty::big : nsEditProperty::small)))
{
// previous sib is already right kind of inline node; slide this over into it
res = MoveNode(aNode, sibling, -1);
return res;
}
sibling = nsnull;
GetNextHTMLSibling(aNode, address_of(sibling));
if (sibling && nsEditor::NodeIsType(sibling, (aSizeChange==1 ? nsEditProperty::big : nsEditProperty::small)))
{
// following sib is already right kind of inline node; slide this over into it
res = MoveNode(aNode, sibling, 0);
return res;
}
// else insert it above aNode
res = InsertContainerAbove(aNode, address_of(tmp), tag);
return res;
}
// none of the above? then cycle through the children.
// MOOSE: we should group the children together if possible
// into a single "big" or "small". For the moment they are
// each getting their own.
nsCOMPtr<nsIDOMNodeList> childNodes;
res = aNode->GetChildNodes(getter_AddRefs(childNodes));
if (NS_FAILED(res)) return res;
if (childNodes)
{
PRInt32 j;
PRUint32 childCount;
childNodes->GetLength(&childCount);
for (j=childCount-1; j>=0; j--)
{
nsCOMPtr<nsIDOMNode> childNode;
res = childNodes->Item(j, getter_AddRefs(childNode));
if ((NS_SUCCEEDED(res)) && (childNode))
{
res = RelativeFontChangeOnNode(aSizeChange, childNode);
if (NS_FAILED(res)) return res;
}
}
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetFontFaceState(PRBool *aMixed, nsAString &outFace)
{
if (!aMixed)
return NS_ERROR_FAILURE;
*aMixed = PR_TRUE;
outFace.Truncate();
nsresult res;
PRBool first, any, all;
NS_NAMED_LITERAL_STRING(attr, "face");
res = GetInlinePropertyBase(nsEditProperty::font, &attr, nsnull, &first, &any, &all, &outFace);
if (NS_FAILED(res)) return res;
if (any && !all) return res; // mixed
if (all)
{
*aMixed = PR_FALSE;
return res;
}
// if there is no font face, check for tt
res = GetInlinePropertyBase(nsEditProperty::tt, nsnull, nsnull, &first, &any, &all,nsnull);
if (NS_FAILED(res)) return res;
if (any && !all) return res; // mixed
if (all)
{
*aMixed = PR_FALSE;
nsEditProperty::tt->ToString(outFace);
}
if (!any)
{
// there was no font face attrs of any kind. We are in normal font.
outFace.Truncate();
*aMixed = PR_FALSE;
}
return res;
}
NS_IMETHODIMP
nsHTMLEditor::GetFontColorState(PRBool *aMixed, nsAString &aOutColor)
{
if (!aMixed)
return NS_ERROR_NULL_POINTER;
*aMixed = PR_TRUE;
aOutColor.Truncate();
nsresult res;
NS_NAMED_LITERAL_STRING(colorStr, "color");
PRBool first, any, all;
res = GetInlinePropertyBase(nsEditProperty::font, &colorStr, nsnull, &first, &any, &all, &aOutColor);
if (NS_FAILED(res)) return res;
if (any && !all) return res; // mixed
if (all)
{
*aMixed = PR_FALSE;
return res;
}
if (!any)
{
// there was no font color attrs of any kind..
aOutColor.Truncate();
*aMixed = PR_FALSE;
}
return res;
}
// the return value is true only if the instance of the HTML editor we created
// can handle CSS styles (for instance, Composer can, Messenger can't) and if
// the CSS preference is checked
nsresult
nsHTMLEditor::GetIsCSSEnabled(PRBool *aIsCSSEnabled)
{
*aIsCSSEnabled = PR_FALSE;
if (mCSSAware) {
// TBD later : removal of mCSSAware and use only the presence of mHTMLCSSUtils
if (mHTMLCSSUtils) {
*aIsCSSEnabled = mHTMLCSSUtils->IsCSSPrefChecked();
}
}
return NS_OK;
}
nsresult
nsHTMLEditor::HasStyleOrIdOrClass(nsIDOMElement * aElement, PRBool *aHasStyleOrIdOrClass)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aElement);
// remove the node if its style attribute is empty or absent,
// and if it does not have a class nor an id
nsAutoString styleVal;
PRBool isStyleSet;
*aHasStyleOrIdOrClass = PR_TRUE;
nsresult res = GetAttributeValue(aElement, NS_LITERAL_STRING("style"), styleVal, &isStyleSet);
if (NS_FAILED(res)) return res;
if (!isStyleSet || styleVal.IsEmpty()) {
res = mHTMLCSSUtils->HasClassOrID(aElement, *aHasStyleOrIdOrClass);
if (NS_FAILED(res)) return res;
}
return res;
}
nsresult
nsHTMLEditor::RemoveElementIfNoStyleOrIdOrClass(nsIDOMElement * aElement, nsIAtom * aTag)
{
NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(aElement);
// early way out if node is not the right kind of element
if (!NodeIsType(node, aTag)) {
return NS_OK;
}
PRBool hasStyleOrIdOrClass;
nsresult res = HasStyleOrIdOrClass(aElement, &hasStyleOrIdOrClass);
if (!hasStyleOrIdOrClass) {
res = RemoveContainer(node);
}
return res;
}
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