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/**
* NodeChange.js
*
* Copyright, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/**
* This class handles the nodechange event dispatching both manual and though selection change events.
*
* @class tinymce.NodeChange
* @private
*/
define("tinymce/NodeChange", [
"tinymce/dom/RangeUtils"
], function(RangeUtils) {
return function(editor) {
var lastRng, lastPath = [];
/**
* Returns true/false if the current element path has been changed or not.
*
* @private
* @return {Boolean} True if the element path is the same false if it's not.
*/
function isSameElementPath(startElm) {
var i, currentPath;
currentPath = editor.$(startElm).parentsUntil(editor.getBody()).add(startElm);
if (currentPath.length === lastPath.length) {
for (i = currentPath.length; i >= 0; i--) {
if (currentPath[i] !== lastPath[i]) {
break;
}
}
if (i === -1) {
lastPath = currentPath;
return true;
}
}
lastPath = currentPath;
return false;
}
// Gecko doesn't support the "selectionchange" event
if (!('onselectionchange' in editor.getDoc())) {
editor.on('NodeChange Click MouseUp KeyUp Focus', function(e) {
var nativeRng, fakeRng;
// Since DOM Ranges mutate on modification
// of the DOM we need to clone it's contents
nativeRng = editor.selection.getRng();
fakeRng = {
startContainer: nativeRng.startContainer,
startOffset: nativeRng.startOffset,
endContainer: nativeRng.endContainer,
endOffset: nativeRng.endOffset
};
// Always treat nodechange as a selectionchange since applying
// formatting to the current range wouldn't update the range but it's parent
if (e.type == 'nodechange' || !RangeUtils.compareRanges(fakeRng, lastRng)) {
editor.fire('SelectionChange');
}
lastRng = fakeRng;
});
}
// IE has a bug where it fires a selectionchange on right click that has a range at the start of the body
// When the contextmenu event fires the selection is located at the right location
editor.on('contextmenu', function() {
editor.fire('SelectionChange');
});
editor.on('SelectionChange', function() {
var startElm = editor.selection.getStart(true);
// Fire a nodechange only when the selection isn't collapsed since focusout will collapse and remove the selection
if (!editor.selection.isCollapsed() && !isSameElementPath(startElm) && editor.dom.isChildOf(startElm, editor.getBody())) {
editor.nodeChanged({selectionChange: true});
}
});
// Fire an extra nodeChange on mouseup for compatibility reasons
editor.on('MouseUp', function(e) {
if (!e.isDefaultPrevented()) {
// Delay nodeChanged call for WebKit edge case issue where the range
// isn't updated until after you click outside a selected image
setTimeout(function() {
editor.nodeChanged();
}, 0);
}
});
/**
* Distpaches out a onNodeChange event to all observers. This method should be called when you
* need to update the UI states or element path etc.
*
* @method nodeChanged
* @param {Object} args Optional args to pass to NodeChange event handlers.
*/
this.nodeChanged = function(args) {
var selection = editor.selection, node, parents, root;
// Fix for bug #1896577 it seems that this can not be fired while the editor is loading
if (editor.initialized && selection && !editor.settings.disable_nodechange && !editor.settings.readonly) {
// Get start node
root = editor.getBody();
node = selection.getStart() || root;
node = node.ownerDocument != editor.getDoc() ? editor.getBody() : node;
// Edge case for <p>|<img></p>
if (node.nodeName == 'IMG' && selection.isCollapsed()) {
node = node.parentNode;
}
// Get parents and add them to object
parents = [];
editor.dom.getParent(node, function(node) {
if (node === root) {
return true;
}
parents.push(node);
});
args = args || {};
args.element = node;
args.parents = parents;
editor.fire('NodeChange', args);
}
};
};
});