smartxml: refactoring

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

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index cbb2ba8..05583c5 100644 (file)
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -11,6 +11,16 @@ define([
 var TEXT_NODE = Node.TEXT_NODE;
 
 
+var INSERTION = function(implementation) {
+    var toret = function(node) {
+        var insertion = this.getNodeInsertion(node);
+        implementation.call(this, insertion.ofNode.nativeNode);
+        this.triggerChangeEvent(insertion.insertsNew ? 'nodeAdded' : 'nodeMoved', {node: insertion.ofNode});
+        return insertion.ofNode;
+    };
+    return toret;
+};
+
 var DocumentNode = function(nativeNode, document) {
     if(!document) {
         throw new Error('undefined document for a node');
@@ -26,8 +36,14 @@ $.extend(DocumentNode.prototype, {
         this._$ = $(nativeNode);
     },
 
+    isRoot: function() {
+        return this.document.root.sameNode(this);
+    },
+
     detach: function() {
+        var parent = this.parent();
         this._$.detach();
+        this.triggerChangeEvent('nodeDetached', {parent: parent});
         return this;
     },
 
@@ -36,36 +52,74 @@ $.extend(DocumentNode.prototype, {
     },
 
     parent: function() {
-        return this.nativeNode.parentNode ? this.document.createElementNode(this.nativeNode.parentNode) : null;
+        var parentNode = this.nativeNode.parentNode;
+        if(parentNode && parentNode.nodeType === Node.ELEMENT_NODE) {
+            return this.document.createElementNode(parentNode);
+        }
+        return null;
     },
 
-    after: function(node) {
-        var insertion = this.getNodeInsertion(node);
-        this._$.after(insertion.ofNode.nativeNode);
-        this.triggerChangeEvent(insertion.insertsNew ? 'nodeAdded' : 'nodeMoved', {node: insertion.ofNode});
-        return insertion.ofNode;
+    parents: function() {
+        var parent = this.parent(),
+            parents = parent ? parent.parents() : [];
+        if(parent) {
+            parents.unshift(parent);
+        }
+        return parents;
     },
 
-    before: function(node) {
-        var insertion = this.getNodeInsertion(node);
-        this._$.before(insertion.ofNode.nativeNode);
-        this.triggerChangeEvent(insertion.insertsNew ? 'nodeAdded' : 'nodeMoved', {node: insertion.ofNode});
-        return insertion.ofNode;
+    prev: function() {
+        var myIdx = this.getIndex();
+        return myIdx > 0 ? this.parent().contents()[myIdx-1] : null;
     },
 
-    wrapWith: function(node) {
-        node = node instanceof ElementNode ? node : this.document.createElementNode(node);
+    next: function() {
+        if(this.isRoot()) {
+            return null;
+        }
+        var myIdx = this.getIndex(),
+            parentContents = this.parent().contents();
+        return myIdx < parentContents.length - 1 ? parentContents[myIdx+1] : null;
+    },
+
+    after: INSERTION(function(nativeNode) {
+        return this._$.after(nativeNode);
+    }),
+
+    before: INSERTION(function(nativeNode) {
+        return this._$.before(nativeNode);
+    }),
 
+    wrapWith: function(node) {
+        var insertion = this.getNodeInsertion(node);
         if(this.parent()) {
-            this.before(node);
+            this.before(insertion.ofNode);
+        }
+        insertion.ofNode.append(this);
+        return insertion.ofNode;
+    },
+
+    /**
+    * Removes parent of a node if node has no siblings.
+    */
+    unwrap: function() {
+        if(this.isRoot()) {
+            return;
+        }
+        var parent = this.parent(),
+            grandParent;
+        if(parent.contents().length === 1) {
+            grandParent = parent.parent();
+            parent.unwrapContent();
+            return grandParent;
         }
-        node.append(this);
-        return node;
     },
 
     triggerChangeEvent: function(type, metaData) {
         var event = new events.ChangeEvent(type, $.extend({node: this}, metaData || {}));
-        this.document.trigger('change', event);
+        if(type === 'nodeDetached' || this.document.containsNode(event.meta.node)) {
+            this.document.trigger('change', event);
+        }
     },
     
     getNodeInsertion: function(node) {
@@ -81,6 +135,9 @@ $.extend(DocumentNode.prototype, {
     },
 
     getIndex: function() {
+        if(this.isRoot()) {
+            return 0;
+        }
         return this.parent().indexOf(this);
     }
 });
@@ -93,6 +150,18 @@ ElementNode.prototype = Object.create(DocumentNode.prototype);
 $.extend(ElementNode.prototype, {
     nodeType: Node.ELEMENT_NODE,
 
+    detach: function() {
+        var prev = this.prev(),
+            next = this.next();
+        if(parent) {
+            if(prev && prev.nodeType === Node.TEXT_NODE && next && next.nodeType === Node.TEXT_NODE) {
+                prev.appendText(next.getText());
+                next.detach();
+            }
+        }
+        return DocumentNode.prototype.detach.call(this);
+    },
+
     setData: function(key, value) {
         if(value !== undefined) {
             this._$.data(key, value);
@@ -170,19 +239,13 @@ $.extend(ElementNode.prototype, {
         return toret;
     },
 
-    append: function(node) {
-        var insertion = this.getNodeInsertion(node);
-        this._$.append(insertion.ofNode.nativeNode);
-        this.triggerChangeEvent(insertion.insertsNew ? 'nodeAdded' : 'nodeMoved', {node: insertion.ofNode});
-        return insertion.ofNode;
-    },
+    append: INSERTION(function(nativeNode) {
+        this._$.append(nativeNode);
+    }),
 
-    prepend: function(node) {
-        var insertion = this.getNodeInsertion(node);
-        this._$.prepend(insertion.ofNode.nativeNode);
-        this.triggerChangeEvent(insertion.insertsNew ? 'nodeAdded' : 'nodeMoved', {node: insertion.ofNode});
-        return insertion.ofNode;
-    },
+    prepend: INSERTION(function(nativeNode) {
+        this._$.prepend(nativeNode);
+    }),
 
     unwrapContent: function() {
         var parent = this.parent();
@@ -194,6 +257,7 @@ $.extend(ElementNode.prototype, {
             myContents = this.contents(),
             myIdx = parent.indexOf(this);
 
+
         if(myContents.length === 0) {
             return this.detach();
         }
@@ -345,7 +409,7 @@ $.extend(Document.prototype, Backbone.Events, {
     },
 
     containsNode: function(node) {
-        return node._$.parents().index(this.root._$) !== -1;
+        return this.root && (node.nativeNode === this.root.nativeNode || node._$.parents().index(this.root._$) !== -1);
     },
 
     wrapNodes: function(params) {
@@ -384,6 +448,25 @@ $.extend(Document.prototype, Backbone.Events, {
         return wrapper;
     },
 
+    getSiblingParents: function(params) {
+        var parents1 = [params.node1].concat(params.node1.parents()).reverse(),
+            parents2 = [params.node2].concat(params.node2.parents()).reverse(),
+            noSiblingParents = null;
+
+        if(parents1.length === 0 || parents2.length === 0 || !(parents1[0].sameNode(parents2[0]))) {
+            return noSiblingParents;
+        }
+
+        var i;
+        for(i = 0; i < Math.min(parents1.length, parents2.length); i++) {
+            if(parents1[i].sameNode(parents2[i])) {
+                continue;
+            }
+            break;
+        }
+        return {node1: parents1[i], node2: parents2[i]};
+    },
+
     _wrapText: function(params) {
         params = _.extend({textNodeIdx: 0}, params);
         if(typeof params.textNodeIdx === 'number') {
@@ -432,6 +515,11 @@ $.extend(Document.prototype, Backbone.Events, {
             wrapperElement.after({text: suffixOutside});
         }
         return wrapperElement;
+    },
+
+    trigger: function() {
+        //console.log('trigger: ' + arguments[0] + (arguments[1] ? ', ' + arguments[1].type : ''));
+        Backbone.Events.trigger.apply(this, arguments);
     }
 });