wip: integrating lists, first extensions api approach

[fnpeditor.git] / src / smartxml / smartxml.js

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index 021a116..6cc3e33 100644 (file)
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -2,8 +2,9 @@ define([
     'libs/jquery',
     'libs/underscore',
     'libs/backbone',
-    'smartxml/events'
-], function($, _, Backbone, events) {
+    'smartxml/events',
+    'smartxml/transformations'
+], function($, _, Backbone, events, transformations) {
     
 'use strict';
 /* globals Node */
@@ -35,13 +36,33 @@ var DocumentNode = function(nativeNode, document) {
 };
 
 $.extend(DocumentNode.prototype, {
+
+    transformations: new transformations.TransformationStorage(),
+
+    transform: function(name, args) {
+        var Transformation = this.transformations.get(name),
+            transformation;
+        if(Transformation) {
+            transformation = new Transformation(this.document, this, args);
+        }
+        return this.document.transform(transformation);
+    },
+
     _setNativeNode: function(nativeNode) {
         this.nativeNode = nativeNode;
         this._$ = $(nativeNode);
     },
 
     clone: function() {
-        return this.document.createDocumentNode(this._$.clone(true, true)[0]);
+        var clone = this._$.clone(true, true);
+        // clone.find('*').addBack().each(function() {
+        //     var n = $(this);
+        //     if(n.data('canvasElement')) {
+        //         n.data('canvasElement', $.extend(true, {}, n.data('canvasElement')));
+        //         n.data('canvasElement').$element = n.data('canvasElement').$element.clone(true, true);
+        //     }
+        // });
+        return this.document.createDocumentNode(clone[0]);
     },
 
     getPath: function(ancestor) {
@@ -221,12 +242,18 @@ $.extend(ElementNode.prototype, {
         return this.nativeNode.tagName.toLowerCase();
     },
 
-    contents: function() {
+    contents: function(selector) {
         var toret = [],
             document = this.document;
-        this._$.contents().each(function() {
-            toret.push(document.createDocumentNode(this));
-        });
+        if(selector) {
+            this._$.children(selector).each(function() {
+                toret.push(document.createDocumentNode(this));
+            });
+        } else {
+            this._$.contents().each(function() {
+                toret.push(document.createDocumentNode(this));
+            });
+        }
         return toret;
     },
 
@@ -354,6 +381,63 @@ $.extend(ElementNode.prototype, {
     }
 });
 
+// trans
+
+// todo - split+append
+
+ElementNode.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'smartxml.setAttr',
+    impl: function(args) {
+        this.setAttr(args.name, args.value);
+    },
+    getChangeRoot: function() {
+        return this.context;
+    }
+}));
+
+ElementNode.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'smartxml.setAttr2',
+    impl: function(args) {
+        this.prevAttr = this.getAttr(args.name);
+        this.setAttr(args.name, args.value);
+    },
+    undo: function(args) {
+        this.setAttr(args.name, this.prevAttr);
+    }
+}));
+
+DocumentNode.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'smartxml.wrapWith',
+    getChangeRoot: function() {
+        return this.context.parent();
+    },
+    impl: function(args) {
+        return this.wrapWith(args);
+    }
+}));
+
+DocumentNode.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'smartxml.wrapText',
+    getChangeRoot: function() {
+        return this.context;
+    },
+    impl: function(args) {
+        return this.wrapText(args);
+    }
+}));
+
+DocumentNode.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'smartxml.detach',
+    getChangeRoot: function() {
+        return this.context.parent();
+    },
+    impl: function(args) {
+        return this.detach();
+    }
+}));
+
+///
+
 var TextNode = function(nativeNode, document) {
     DocumentNode.call(this, nativeNode, document);
 };
@@ -367,6 +451,7 @@ $.extend(TextNode.prototype, {
     },
 
     setText: function(text) {
+        console.log('smartxml: ' + text);
         this.nativeNode.data = text;
         this.triggerTextChangeEvent();
     },
@@ -440,17 +525,68 @@ $.extend(TextNode.prototype, {
 });
 
 
+TextNode.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'rng.breakContent',
+    // impl: function(args) {
+    //     var node = this.context,
+    //         newNodes, emptyNode, emptyText;
+    //     newNodes = node.transform('smartxml.split', {offset: args.offset});
+    //     [newNodes.first, newNodes.second].some(function(newNode) {
+    //         if(!(newNode.contents().length)) {
+    //             newNode.transform('smartxml.append', {text: ''});
+    //             return true; // break
+    //         }
+    //     });
+    //     return _.extend(newNodes, {emptyText: emptyText});
+    // },
+    impl: function(args) {
+        var node = this,
+            newNodes, emptyNode, emptyText;
+        newNodes = node.split({offset: args.offset});
+        [newNodes.first, newNodes.second].some(function(newNode) {
+            if(!(newNode.contents().length)) {
+                newNode.append({text: ''});
+                return true; // break
+            }
+        });
+        return _.extend(newNodes, {emptyText: emptyText});
+    },
+    getChangeRoot: function() {
+        return this.context.parent().parent();
+    },
+    isAllowed: function(args) {
+        var parent = this.parent();
+        return !!(parent && parent.parent());
+    }
+}));
+
+
+ElementNode.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'smartxml.setText',
+    impl: function(args) {
+        this.setText(args.text);
+    },
+    getChangeRoot: function() {
+        return this.context;
+    }
+}));
+
+
 var parseXML = function(xml) {
     return $($.trim(xml))[0];
 };
 
 var Document = function(xml) {
     this.loadXML(xml);
+    this.undoStack = [];
+    this.redoStack = [];
+    this._transformationLevel = 0;
 };
 
 $.extend(Document.prototype, Backbone.Events, {
     ElementNodeFactory: ElementNode,
     TextNodeFactory: TextNode,
+    transformations: new transformations.TransformationStorage(),
 
     createDocumentNode: function(from) {
         if(!(from instanceof Node)) {
@@ -620,6 +756,52 @@ $.extend(Document.prototype, Backbone.Events, {
         defineDocumentProperties(this, insertion.ofNode._$);
         insertion.ofNode.triggerChangeEvent('nodeAdded');
         return insertion.ofNode;
+    },
+
+    transform: function(transformation, args) {
+        console.log('transform');
+        var Transformation, toret;
+        if(typeof transformation === 'string') {
+            Transformation = this.transformations.get(transformation);
+            if(Transformation) {
+                transformation = new Transformation(this, this, args);
+            }
+        } 
+        if(transformation) {
+            this._transformationLevel++;
+            toret = transformation.run();
+            if(this._transformationLevel === 1) {
+                this.undoStack.push(transformation);
+            }
+            this._transformationLevel--;
+            console.log('clearing redo stack');
+            this.redoStack = [];
+            return toret;
+        } else {
+            throw new Error('Transformation ' + transformation + ' doesn\'t exist!');
+        }
+    },
+    undo: function() {
+        var transformation = this.undoStack.pop();
+        if(transformation) {
+            transformation.undo();
+            this.redoStack.push(transformation);
+        }
+    },
+    redo: function() {
+        var transformation = this.redoStack.pop();
+        if(transformation) {
+            transformation.run();
+            this.undoStack.push(transformation);
+        }
+    },
+
+    getNodeByPath: function(path) {
+        var toret = this.root;
+        path.forEach(function(idx) {
+            toret = toret.contents()[idx];
+        });
+        return toret;
     }
 });
 
@@ -632,6 +814,21 @@ var defineDocumentProperties = function(doc, $document) {
     }, configurable: true});
 };
 
+Document.prototype.transformations.register(transformations.createContextTransformation({
+    name: 'smartxml.wrapNodes',
+    // init: function() {
+
+    // },
+    // getChangeRoot: function() {
+    //     return this.context;
+    // },
+    impl: function(args) {
+        this.wrapNodes(args);
+    },
+
+}));
+
+
 return {
     documentFromXML: function(xml) {
         return new Document(xml);