Move history-related classes out into its own JS file: history.js
git-svn-id: http://svg-edit.googlecode.com/svn/trunk@1829 eee81c28-f429-11dd-99c0-75d572ba1dddmaster
Jeff Schiller
parent
2d9ff7a2e0
commit
7d81d66d9a
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@ -0,0 +1,321 @@
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/**
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* SVG-edit History Commands
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*
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* Licensed under the Apache License, Version 2
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*
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* Copyright(c) 2010 Jeff Schiller
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*/
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// Dependencies:
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// 1) jQuery
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(function() {
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if (!window.svgedit) {
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window.svgedit = {};
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}
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if (!svgedit.history) {
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svgedit.history = {};
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}
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// TODO: create a 'typing' command object that tracks changes in text
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// if a new Typing command is created and the top command on the stack is also a Typing
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// and they both affect the same element, then collapse the two commands into one
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// Group: Undo/Redo history management
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// Class: svgedit.history.ChangeElementCommand
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// History command to make a change to an element.
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// Usually an attribute change, but can also be textcontent.
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//
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// Parameters:
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// elem - The DOM element that was changed
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// attrs - An object with the attributes to be changed and the values they had *before* the change
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// text - An optional string visible to user related to this change
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svgedit.history.ChangeElementCommand = function(elem, attrs, text) {
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this.elem = elem;
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this.text = text ? ("Change " + elem.tagName + " " + text) : ("Change " + elem.tagName);
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this.newValues = {};
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this.oldValues = attrs;
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for (var attr in attrs) {
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if (attr == "#text") this.newValues[attr] = elem.textContent;
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else if (attr == "#href") this.newValues[attr] = getHref(elem);
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else this.newValues[attr] = elem.getAttribute(attr);
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}
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// Function: ChangeElementCommand.apply
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// Performs the stored change action
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this.apply = function() {
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var bChangedTransform = false;
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for(var attr in this.newValues ) {
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if (this.newValues[attr]) {
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if (attr == "#text") this.elem.textContent = this.newValues[attr];
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else if (attr == "#href") setHref(this.elem, this.newValues[attr])
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else this.elem.setAttribute(attr, this.newValues[attr]);
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}
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else {
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if (attr == "#text") this.elem.textContent = "";
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else {
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this.elem.setAttribute(attr, "");
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this.elem.removeAttribute(attr);
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}
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}
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if (attr == "transform") { bChangedTransform = true; }
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else if (attr == "stdDeviation") { canvas.setBlurOffsets(this.elem.parentNode, this.newValues[attr]); }
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}
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// relocate rotational transform, if necessary
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if(!bChangedTransform) {
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var angle = getRotationAngle(elem);
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if (angle) {
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var bbox = elem.getBBox();
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var cx = bbox.x + bbox.width/2,
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cy = bbox.y + bbox.height/2;
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var rotate = ["rotate(", angle, " ", cx, ",", cy, ")"].join('');
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if (rotate != elem.getAttribute("transform")) {
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elem.setAttribute("transform", rotate);
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}
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}
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}
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// if we are changing layer names, re-identify all layers
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if (this.elem.tagName == "title" && this.elem.parentNode.parentNode == svgcontent) {
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identifyLayers();
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}
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return true;
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};
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// Function: ChangeElementCommand.unapply
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// Reverses the stored change action
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this.unapply = function() {
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var bChangedTransform = false;
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for(var attr in this.oldValues ) {
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if (this.oldValues[attr]) {
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if (attr == "#text") this.elem.textContent = this.oldValues[attr];
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else if (attr == "#href") setHref(this.elem, this.oldValues[attr]);
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else this.elem.setAttribute(attr, this.oldValues[attr]);
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if (attr == "stdDeviation") canvas.setBlurOffsets(this.elem.parentNode, this.oldValues[attr]);
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}
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else {
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if (attr == "#text") this.elem.textContent = "";
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else this.elem.removeAttribute(attr);
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}
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if (attr == "transform") { bChangedTransform = true; }
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}
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// relocate rotational transform, if necessary
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if(!bChangedTransform) {
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var angle = getRotationAngle(elem);
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if (angle) {
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var bbox = elem.getBBox();
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var cx = bbox.x + bbox.width/2,
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cy = bbox.y + bbox.height/2;
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var rotate = ["rotate(", angle, " ", cx, ",", cy, ")"].join('');
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if (rotate != elem.getAttribute("transform")) {
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elem.setAttribute("transform", rotate);
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}
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}
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}
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// if we are changing layer names, re-identify all layers
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if (this.elem.tagName == "title" && this.elem.parentNode.parentNode == svgcontent) {
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identifyLayers();
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}
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// Remove transformlist to prevent confusion that causes bugs like 575.
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if (svgTransformLists[this.elem.id]) {
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delete svgTransformLists[this.elem.id];
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}
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return true;
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};
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// Function: ChangeElementCommand.elements
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// Returns array with element associated with this command
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this.elements = function() { return [this.elem]; }
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};
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// Class: svgedit.history.InsertElementCommand
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// History command for an element that was added to the DOM
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//
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// Parameters:
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// elem - The newly added DOM element
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// text - An optional string visible to user related to this change
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svgedit.history.InsertElementCommand = function(elem, text) {
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this.elem = elem;
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this.text = text || ("Create " + elem.tagName);
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this.parent = elem.parentNode;
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// Function: InsertElementCommand.apply
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// Re-Inserts the new element
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this.apply = function() {
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this.elem = this.parent.insertBefore(this.elem, this.elem.nextSibling);
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restoreRefElems(this.elem);
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if (this.parent == svgcontent) {
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identifyLayers();
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}
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};
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// Function: InsertElementCommand.unapply
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// Removes the element
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this.unapply = function() {
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this.parent = this.elem.parentNode;
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this.elem = this.elem.parentNode.removeChild(this.elem);
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if (this.parent == svgcontent) {
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identifyLayers();
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}
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};
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// Function: InsertElementCommand.elements
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// Returns array with element associated with this command
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this.elements = function() { return [this.elem]; };
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};
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// Class: svgedit.history.RemoveElementCommand
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// History command for an element removed from the DOM
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//
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// Parameters:
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// elem - The removed DOM element
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// parent - The DOM element's parent
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// text - An optional string visible to user related to this change
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svgedit.history.RemoveElementCommand = function(elem, parent, text) {
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this.elem = elem;
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this.text = text || ("Delete " + elem.tagName);
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this.parent = parent;
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// Function: RemoveElementCommand.apply
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// Re-removes the new element
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this.apply = function() {
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if (svgTransformLists[this.elem.id]) {
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delete svgTransformLists[this.elem.id];
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}
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this.parent = this.elem.parentNode;
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this.elem = this.parent.removeChild(this.elem);
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if (this.parent == svgcontent) {
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identifyLayers();
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}
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};
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// Function: RemoveElementCommand.unapply
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// Re-adds the new element
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this.unapply = function() {
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if (svgTransformLists[this.elem.id]) {
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delete svgTransformLists[this.elem.id];
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}
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this.parent.insertBefore(this.elem, this.elem.nextSibling);
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restoreRefElems(this.elem);
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if (this.parent === svgcontent) {
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identifyLayers();
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}
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};
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// Function: RemoveElementCommand.elements
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// Returns array with element associated with this command
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this.elements = function() { return [this.elem]; };
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// special hack for webkit: remove this element's entry in the svgTransformLists map
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if (svgTransformLists[elem.id]) {
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delete svgTransformLists[elem.id];
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}
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};
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// Class: svgedit.history.MoveElementCommand
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// History command for an element that had its DOM position changed
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//
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// Parameters:
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// elem - The DOM element that was moved
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// oldNextSibling - The element's next sibling before it was moved
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// oldParent - The element's parent before it was moved
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// text - An optional string visible to user related to this change
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svgedit.history.MoveElementCommand = function(elem, oldNextSibling, oldParent, text) {
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this.elem = elem;
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this.text = text ? ("Move " + elem.tagName + " to " + text) : ("Move " + elem.tagName);
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this.oldNextSibling = oldNextSibling;
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this.oldParent = oldParent;
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this.newNextSibling = elem.nextSibling;
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this.newParent = elem.parentNode;
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// Function: MoveElementCommand.unapply
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// Re-positions the element
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this.apply = function() {
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this.elem = this.newParent.insertBefore(this.elem, this.newNextSibling);
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if (this.newParent == svgcontent) {
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identifyLayers();
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}
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};
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// Function: MoveElementCommand.unapply
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// Positions the element back to its original location
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this.unapply = function() {
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this.elem = this.oldParent.insertBefore(this.elem, this.oldNextSibling);
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if (this.oldParent == svgcontent) {
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identifyLayers();
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}
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};
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// Function: MoveElementCommand.elements
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// Returns array with element associated with this command
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this.elements = function() { return [this.elem]; };
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};
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// Class: svgedit.history.BatchCommand
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// History command that can contain/execute multiple other commands
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//
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// Parameters:
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// text - An optional string visible to user related to this change
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svgedit.history.BatchCommand = function(text) {
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this.text = text || "Batch Command";
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this.stack = [];
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// Function: BatchCommand.apply
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// Runs "apply" on all subcommands
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this.apply = function() {
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var len = this.stack.length;
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for (var i = 0; i < len; ++i) {
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this.stack[i].apply();
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}
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};
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// Function: BatchCommand.unapply
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// Runs "unapply" on all subcommands
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this.unapply = function() {
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for (var i = this.stack.length-1; i >= 0; i--) {
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this.stack[i].unapply();
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}
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};
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// Function: BatchCommand.elements
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// Iterate through all our subcommands and returns all the elements we are changing
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this.elements = function() {
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var elems = [];
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var cmd = this.stack.length;
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while (cmd--) {
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var thisElems = this.stack[cmd].elements();
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var elem = thisElems.length;
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while (elem--) {
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if (elems.indexOf(thisElems[elem]) == -1) elems.push(thisElems[elem]);
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}
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}
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return elems;
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};
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// Function: BatchCommand.addSubCommand
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// Adds a given command to the history stack
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//
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// Parameters:
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// cmd - The undo command object to add
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this.addSubCommand = function(cmd) { this.stack.push(cmd); };
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// Function: BatchCommand.isEmpty
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// Returns a boolean indicating whether or not the batch command is empty
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this.isEmpty = function() { return this.stack.length == 0; };
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};
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})();
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@ -19,6 +19,7 @@
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<script type="text/javascript" src="spinbtn/JQuerySpinBtn.js"></script>
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<script type="text/javascript" src="contextmenu/jquery.contextMenu.js"></script>
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<script type="text/javascript" src="browsersupport.js"></script>
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<script type="text/javascript" src="history.js"></script>
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<script type="text/javascript" src="svgutils.js"></script>
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<script type="text/javascript" src="svgcanvas.js"></script>
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<script type="text/javascript" src="svg-editor.js"></script>
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@ -33,6 +34,7 @@
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<script type="text/javascript" src="jgraduate/jquery.jgraduate.min.js"></script>
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<script type="text/javascript" src="spinbtn/JQuerySpinBtn.min.js"></script>
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<script type="text/javascript" src="browsersupport.min.js"></script>
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<script type="text/javascript" src="history.min.js"></script>
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<script type="text/javascript" src="svgutils.min.js"></script>
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<script type="text/javascript" src="svgcanvas.min.js"></script>
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<script type="text/javascript" src="svg-editor.min.js"></script>
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@ -9,6 +9,12 @@
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*
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*/
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// Dependencies:
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// 1) jQuery
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// 2) browsersupport.js
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// 3) history.js
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// 4) svgutils.js
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if(!window.console) {
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window.console = {};
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window.console.log = function(str) {};
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@ -534,305 +540,14 @@ var restoreRefElems = function(elem) {
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}
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}
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// Group: Undo/Redo history management
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this.undoCmd = {};
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// Function: ChangeElementCommand
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// History command to make a change to an element.
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// Usually an attribute change, but can also be textcontent.
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//
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// Parameters:
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// elem - The DOM element that was changed
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// attrs - An object with the attributes to be changed and the values they had *before* the change
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// text - An optional string visible to user related to this change
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var ChangeElementCommand = this.undoCmd.changeElement = function(elem, attrs, text) {
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this.elem = elem;
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this.text = text ? ("Change " + elem.tagName + " " + text) : ("Change " + elem.tagName);
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this.newValues = {};
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this.oldValues = attrs;
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for (var attr in attrs) {
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if (attr == "#text") this.newValues[attr] = elem.textContent;
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else if (attr == "#href") this.newValues[attr] = getHref(elem);
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else this.newValues[attr] = elem.getAttribute(attr);
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}
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// Function: ChangeElementCommand.apply
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// Performs the stored change action
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this.apply = function() {
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var bChangedTransform = false;
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for(var attr in this.newValues ) {
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if (this.newValues[attr]) {
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if (attr == "#text") this.elem.textContent = this.newValues[attr];
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else if (attr == "#href") setHref(this.elem, this.newValues[attr])
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else this.elem.setAttribute(attr, this.newValues[attr]);
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}
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else {
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if (attr == "#text") this.elem.textContent = "";
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else {
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this.elem.setAttribute(attr, "");
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this.elem.removeAttribute(attr);
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}
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}
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if (attr == "transform") { bChangedTransform = true; }
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else if (attr == "stdDeviation") { canvas.setBlurOffsets(this.elem.parentNode, this.newValues[attr]); }
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}
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// relocate rotational transform, if necessary
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if(!bChangedTransform) {
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var angle = getRotationAngle(elem);
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if (angle) {
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var bbox = elem.getBBox();
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var cx = bbox.x + bbox.width/2,
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cy = bbox.y + bbox.height/2;
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var rotate = ["rotate(", angle, " ", cx, ",", cy, ")"].join('');
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if (rotate != elem.getAttribute("transform")) {
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elem.setAttribute("transform", rotate);
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}
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}
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}
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// if we are changing layer names, re-identify all layers
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if (this.elem.tagName == "title" && this.elem.parentNode.parentNode == svgcontent) {
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identifyLayers();
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}
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return true;
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};
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// Function: ChangeElementCommand.unapply
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// Reverses the stored change action
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this.unapply = function() {
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var bChangedTransform = false;
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for(var attr in this.oldValues ) {
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if (this.oldValues[attr]) {
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if (attr == "#text") this.elem.textContent = this.oldValues[attr];
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else if (attr == "#href") setHref(this.elem, this.oldValues[attr]);
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else this.elem.setAttribute(attr, this.oldValues[attr]);
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if (attr == "stdDeviation") canvas.setBlurOffsets(this.elem.parentNode, this.oldValues[attr]);
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}
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else {
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if (attr == "#text") this.elem.textContent = "";
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else this.elem.removeAttribute(attr);
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}
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if (attr == "transform") { bChangedTransform = true; }
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}
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// relocate rotational transform, if necessary
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if(!bChangedTransform) {
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var angle = getRotationAngle(elem);
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if (angle) {
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var bbox = elem.getBBox();
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var cx = bbox.x + bbox.width/2,
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cy = bbox.y + bbox.height/2;
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var rotate = ["rotate(", angle, " ", cx, ",", cy, ")"].join('');
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if (rotate != elem.getAttribute("transform")) {
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elem.setAttribute("transform", rotate);
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}
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}
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}
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// if we are changing layer names, re-identify all layers
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if (this.elem.tagName == "title" && this.elem.parentNode.parentNode == svgcontent) {
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identifyLayers();
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}
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// Remove transformlist to prevent confusion that causes bugs like 575.
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if (svgTransformLists[this.elem.id]) {
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delete svgTransformLists[this.elem.id];
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}
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return true;
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};
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// Function: ChangeElementCommand.elements
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// Returns array with element associated with this command
|
||||
this.elements = function() { return [this.elem]; }
|
||||
}
|
||||
|
||||
// Function: InsertElementCommand
|
||||
// History command for an element that was added to the DOM
|
||||
//
|
||||
// Parameters:
|
||||
// elem - The newly added DOM element
|
||||
// text - An optional string visible to user related to this change
|
||||
var InsertElementCommand = this.undoCmd.insertElement = function(elem, text) {
|
||||
this.elem = elem;
|
||||
this.text = text || ("Create " + elem.tagName);
|
||||
this.parent = elem.parentNode;
|
||||
|
||||
// Function: InsertElementCommand.apply
|
||||
// Re-Inserts the new element
|
||||
this.apply = function() {
|
||||
this.elem = this.parent.insertBefore(this.elem, this.elem.nextSibling);
|
||||
|
||||
restoreRefElems(this.elem);
|
||||
|
||||
if (this.parent == svgcontent) {
|
||||
identifyLayers();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: InsertElementCommand.unapply
|
||||
// Removes the element
|
||||
this.unapply = function() {
|
||||
this.parent = this.elem.parentNode;
|
||||
this.elem = this.elem.parentNode.removeChild(this.elem);
|
||||
if (this.parent == svgcontent) {
|
||||
identifyLayers();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: InsertElementCommand.elements
|
||||
// Returns array with element associated with this command
|
||||
this.elements = function() { return [this.elem]; };
|
||||
}
|
||||
|
||||
// Function: RemoveElementCommand
|
||||
// History command for an element removed from the DOM
|
||||
//
|
||||
// Parameters:
|
||||
// elem - The removed DOM element
|
||||
// parent - The DOM element's parent
|
||||
// text - An optional string visible to user related to this change
|
||||
var RemoveElementCommand = this.undoCmd.removeElement = function(elem, parent, text) {
|
||||
this.elem = elem;
|
||||
this.text = text || ("Delete " + elem.tagName);
|
||||
this.parent = parent;
|
||||
|
||||
// Function: RemoveElementCommand.apply
|
||||
// Re-removes the new element
|
||||
this.apply = function() {
|
||||
if (svgTransformLists[this.elem.id]) {
|
||||
delete svgTransformLists[this.elem.id];
|
||||
}
|
||||
|
||||
this.parent = this.elem.parentNode;
|
||||
this.elem = this.parent.removeChild(this.elem);
|
||||
if (this.parent == svgcontent) {
|
||||
identifyLayers();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: RemoveElementCommand.unapply
|
||||
// Re-adds the new element
|
||||
this.unapply = function() {
|
||||
if (svgTransformLists[this.elem.id]) {
|
||||
delete svgTransformLists[this.elem.id];
|
||||
}
|
||||
|
||||
this.parent.insertBefore(this.elem, this.elem.nextSibling);
|
||||
|
||||
restoreRefElems(this.elem);
|
||||
|
||||
if (this.parent === svgcontent) {
|
||||
identifyLayers();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: RemoveElementCommand.elements
|
||||
// Returns array with element associated with this command
|
||||
this.elements = function() { return [this.elem]; };
|
||||
|
||||
// special hack for webkit: remove this element's entry in the svgTransformLists map
|
||||
if (svgTransformLists[elem.id]) {
|
||||
delete svgTransformLists[elem.id];
|
||||
}
|
||||
}
|
||||
|
||||
// Function: MoveElementCommand
|
||||
// History command for an element that had its DOM position changed
|
||||
//
|
||||
// Parameters:
|
||||
// elem - The DOM element that was moved
|
||||
// oldNextSibling - The element's next sibling before it was moved
|
||||
// oldParent - The element's parent before it was moved
|
||||
// text - An optional string visible to user related to this change
|
||||
var MoveElementCommand = this.undoCmd.moveElement = function(elem, oldNextSibling, oldParent, text) {
|
||||
this.elem = elem;
|
||||
this.text = text ? ("Move " + elem.tagName + " to " + text) : ("Move " + elem.tagName);
|
||||
this.oldNextSibling = oldNextSibling;
|
||||
this.oldParent = oldParent;
|
||||
this.newNextSibling = elem.nextSibling;
|
||||
this.newParent = elem.parentNode;
|
||||
|
||||
// Function: MoveElementCommand.unapply
|
||||
// Re-positions the element
|
||||
this.apply = function() {
|
||||
this.elem = this.newParent.insertBefore(this.elem, this.newNextSibling);
|
||||
if (this.newParent == svgcontent) {
|
||||
identifyLayers();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: MoveElementCommand.unapply
|
||||
// Positions the element back to its original location
|
||||
this.unapply = function() {
|
||||
this.elem = this.oldParent.insertBefore(this.elem, this.oldNextSibling);
|
||||
if (this.oldParent == svgcontent) {
|
||||
identifyLayers();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: MoveElementCommand.elements
|
||||
// Returns array with element associated with this command
|
||||
this.elements = function() { return [this.elem]; };
|
||||
}
|
||||
|
||||
// TODO: create a 'typing' command object that tracks changes in text
|
||||
// if a new Typing command is created and the top command on the stack is also a Typing
|
||||
// and they both affect the same element, then collapse the two commands into one
|
||||
|
||||
// Function: BatchCommand
|
||||
// History command that can contain/execute multiple other commands
|
||||
//
|
||||
// Parameters:
|
||||
// text - An optional string visible to user related to this change
|
||||
var BatchCommand = this.undoCmd.batch = function(text) {
|
||||
this.text = text || "Batch Command";
|
||||
this.stack = [];
|
||||
|
||||
// Function: BatchCommand.apply
|
||||
// Runs "apply" on all subcommands
|
||||
this.apply = function() {
|
||||
var len = this.stack.length;
|
||||
for (var i = 0; i < len; ++i) {
|
||||
this.stack[i].apply();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: BatchCommand.unapply
|
||||
// Runs "unapply" on all subcommands
|
||||
this.unapply = function() {
|
||||
for (var i = this.stack.length-1; i >= 0; i--) {
|
||||
this.stack[i].unapply();
|
||||
}
|
||||
};
|
||||
|
||||
// Function: BatchCommand.elements
|
||||
// Iterate through all our subcommands and returns all the elements we are changing
|
||||
this.elements = function() {
|
||||
var elems = [];
|
||||
var cmd = this.stack.length;
|
||||
while (cmd--) {
|
||||
var thisElems = this.stack[cmd].elements();
|
||||
var elem = thisElems.length;
|
||||
while (elem--) {
|
||||
if (elems.indexOf(thisElems[elem]) == -1) elems.push(thisElems[elem]);
|
||||
}
|
||||
}
|
||||
return elems;
|
||||
};
|
||||
|
||||
// Function: BatchCommand.addSubCommand
|
||||
// Adds a given command to the history stack
|
||||
//
|
||||
// Parameters:
|
||||
// cmd - The undo command object to add
|
||||
this.addSubCommand = function(cmd) { this.stack.push(cmd); };
|
||||
|
||||
// Function: BatchCommand.isEmpty
|
||||
// Returns a boolean indicating whether or not the batch command is empty
|
||||
this.isEmpty = function() { return this.stack.length == 0; };
|
||||
}
|
||||
// "Import" svgedit.history classes.
|
||||
var ChangeElementCommand = this.undoCmd.changeElement = svgedit.history.ChangeElementCommand;
|
||||
var InsertElementCommand = this.undoCmd.insertElement = svgedit.history.InsertElementCommand;
|
||||
var RemoveElementCommand = this.undoCmd.removeElement = svgedit.history.RemoveElementCommand;
|
||||
var MoveElementCommand = this.undoCmd.moveElement = svgedit.history.MoveElementCommand;
|
||||
var BatchCommand = this.undoCmd.batch = svgedit.history.BatchCommand;
|
||||
|
||||
// Set scope for addCommandToHistory
|
||||
var addCommandToHistory;
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@
|
|||
|
||||
(function() {
|
||||
|
||||
if (window.svgedit == undefined) {
|
||||
if (!window.svgedit) {
|
||||
window.svgedit = {};
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue