handle situation when nothing was actually unwrapped

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

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index 2e507db..e3c831d 100644 (file)
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -6,11 +6,21 @@ define([
 ], function($, _, Backbone, events) {
     
 'use strict';
 ], function($, _, Backbone, events) {
     
 'use strict';

-
+/* globals Node */

 
 var TEXT_NODE = Node.TEXT_NODE;
 
 
 
 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');
 var DocumentNode = function(nativeNode, document) {
     if(!document) {
         throw new Error('undefined document for a node');


@@ -26,43 +36,162 @@ $.extend(DocumentNode.prototype, {
         this._$ = $(nativeNode);
     },
 
         this._$ = $(nativeNode);
     },
 

-    detach: function() { this._$.detach(); },
+    clone: function() {
+        return this.document.createDocumentNode(this._$.clone(true, true)[0]);
+    },
+
+    getPath: function(ancestor) {
+        var nodePath = [this].concat(this.parents()),
+            toret, idx;
+        ancestor = ancestor || this.document.root;
+
+        nodePath.some(function(node, i) {
+            if(node.sameNode(ancestor)) {
+                idx = i;
+                return true;
+            }
+        });
+
+        if(idx !== 'undefined') {
+            nodePath = nodePath.slice(0, idx);
+        }
+        toret = nodePath.map(function(node) {return node.getIndex(); });
+        toret.reverse();
+        return toret;
+    },
+
+    isRoot: function() {
+        return this.document.root.sameNode(this);
+    },
+
+    detach: function() {
+        var parent = this.parent();
+        this._$.detach();
+        this.triggerChangeEvent('nodeDetached', {parent: parent});
+        return this;
+    },
+
+    replaceWith: function(node) {
+        var toret;
+        if(this.isRoot()) {
+            return this.document.replaceRoot(node);
+        }
+        toret = this.after(node);
+        this.detach();
+        return toret;
+    },

 
     sameNode: function(otherNode) {
 
     sameNode: function(otherNode) {

-        return otherNode && this.nativeNode === otherNode.nativeNode;
+        return !!(otherNode) && this.nativeNode === otherNode.nativeNode;

     },
 
     parent: function() {
     },
 
     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.createDocumentNode(parentNode);
+        }
+        return null;

     },
 
     },
 

-    before: function(node) {
-        this._$.before(node.nativeNode);
+    parents: function() {
+        var parent = this.parent(),
+            parents = parent ? parent.parents() : [];
+        if(parent) {
+            parents.unshift(parent);
+        }
+        return parents;

     },
 
     },
 

-    wrapWith: function(node) {
-        node = node instanceof ElementNode ? node : this.document.createElementNode(node);
+    prev: function() {
+        var myIdx = this.getIndex();
+        return myIdx > 0 ? this.parent().contents()[myIdx-1] : null;
+    },
+
+    next: function() {
+        if(this.isRoot()) {
+            return null;
+        }
+        var myIdx = this.getIndex(),
+            parentContents = this.parent().contents();
+        return myIdx < parentContents.length - 1 ? parentContents[myIdx+1] : null;
+    },
+
+    isSurroundedByTextElements: function() {
+        var prev = this.prev(),
+            next = this.next();
+        return prev && (prev.nodeType === Node.TEXT_NODE) && next && (next.nodeType === Node.TEXT_NODE);
+    },
+
+    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()) {
         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 || {}));
     },
 
     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) {
+        return this.document.getNodeInsertion(node);
+    },
+
+    getIndex: function() {
+        if(this.isRoot()) {
+            return 0;
+        }
+        return this.parent().indexOf(this);
+    }

 });
 
 var ElementNode = function(nativeNode, document) {
     DocumentNode.call(this, nativeNode, document);
 };
 });
 
 var ElementNode = function(nativeNode, document) {
     DocumentNode.call(this, nativeNode, document);
 };

+ElementNode.prototype = Object.create(DocumentNode.prototype);

 
 

-$.extend(ElementNode.prototype, DocumentNode.prototype, {
+$.extend(ElementNode.prototype, {

     nodeType: Node.ELEMENT_NODE,
 
     nodeType: Node.ELEMENT_NODE,
 

+    detach: function() {
+        var next;
+        if(this.parent() && this.isSurroundedByTextElements()) {
+            next = this.next();
+            this.prev().appendText(next.getText());
+            next.detach();
+        }
+        return DocumentNode.prototype.detach.call(this);
+    },
+

     setData: function(key, value) {
         if(value !== undefined) {
             this._$.data(key, value);
     setData: function(key, value) {
         if(value !== undefined) {
             this._$.data(key, value);


@@ -87,12 +216,7 @@ $.extend(ElementNode.prototype, DocumentNode.prototype, {
         var toret = [],
             document = this.document;
         this._$.contents().each(function() {
         var toret = [],
             document = this.document;
         this._$.contents().each(function() {

-            if(this.nodeType === Node.ELEMENT_NODE) {
-                toret.push(document.createElementNode(this));
-            }
-            else if(this.nodeType === Node.TEXT_NODE) {
-                toret.push(document.createTextNode(this));
-            }
+            toret.push(document.createDocumentNode(this));

         });
         return toret;
     },
         });
         return toret;
     },


@@ -102,7 +226,7 @@ $.extend(ElementNode.prototype, DocumentNode.prototype, {
     },
 
     setTag: function(tagName) {
     },
 
     setTag: function(tagName) {

-        var node = this.document.createElementNode({tagName: tagName}),
+        var node = this.document.createDocumentNode({tagName: tagName}),

             oldTagName = this.getTagName(),
             myContents = this._$.contents();
 
             oldTagName = this.getTagName(),
             myContents = this._$.contents();
 


@@ -140,8 +264,21 @@ $.extend(ElementNode.prototype, DocumentNode.prototype, {
         return toret;
     },
 
         return toret;
     },
 

-    append: function(documentNode) {
-        this._$.append(documentNode.nativeNode);
+    append: INSERTION(function(nativeNode) {
+        this._$.append(nativeNode);
+    }),
+
+    prepend: INSERTION(function(nativeNode) {
+        this._$.prepend(nativeNode);
+    }),
+
+    insertAtIndex: function(nativeNode, index) {
+        var contents = this.contents();
+        if(index < contents.length) {
+            return contents[index].before(nativeNode);
+        } else if(index === contents.length) {
+            return this.append(nativeNode);
+        }

     },
 
     unwrapContent: function() {
     },
 
     unwrapContent: function() {


@@ -150,18 +287,20 @@ $.extend(ElementNode.prototype, DocumentNode.prototype, {
             return;
         }
 
             return;
         }
 

-        var parentContents = parent.contents(),
-            myContents = this.contents(),
+        var myContents = this.contents(),

             myIdx = parent.indexOf(this);
 
             myIdx = parent.indexOf(this);
 

+

         if(myContents.length === 0) {
             return this.detach();
         }
 
         if(myContents.length === 0) {
             return this.detach();
         }
 

-        var moveLeftRange, moveRightRange, leftMerged;
+        var prev = this.prev(),
+            next = this.next(),
+            moveLeftRange, moveRightRange, leftMerged;

 
 

-        if(myIdx > 0 && (parentContents[myIdx-1].nodeType === TEXT_NODE) && (myContents[0].nodeType === TEXT_NODE)) {
-            parentContents[myIdx-1].appendText(myContents[0].getText());
+        if(prev && (prev.nodeType === TEXT_NODE) && (myContents[0].nodeType === TEXT_NODE)) {
+            prev.appendText(myContents[0].getText());

             myContents[0].detach();
             moveLeftRange = true;
             leftMerged = true;
             myContents[0].detach();
             moveLeftRange = true;
             leftMerged = true;


@@ -170,9 +309,10 @@ $.extend(ElementNode.prototype, DocumentNode.prototype, {
         }
 
         if(!(leftMerged && myContents.length === 1)) {
         }
 
         if(!(leftMerged && myContents.length === 1)) {

-            if(myIdx < parentContents.length - 1 && (parentContents[myIdx+1].nodeType === TEXT_NODE) && (myContents[myContents.length-1].nodeType === TEXT_NODE)) {
-                parentContents[myIdx+1].prependText(myContents[myContents.length-1].getText());
-                myContents[myContents.length-1].detach();
+            var lastContents = _.last(myContents);
+            if(next && (next.nodeType === TEXT_NODE) && (lastContents.nodeType === TEXT_NODE)) {
+                next.prependText(lastContents.getText());
+                lastContents.detach();

                 moveRightRange = true;
             }
         }
                 moveRightRange = true;
             }
         }


@@ -190,6 +330,10 @@ $.extend(ElementNode.prototype, DocumentNode.prototype, {
         };
     },
 
         };
     },
 

+    wrapText: function(params) {
+        return this.document._wrapText(_.extend({inside: this}, params));
+    },
+

     toXML: function() {
         var wrapper = $('<div>');
         wrapper.append(this._getXMLDOMToDump());
     toXML: function() {
         var wrapper = $('<div>');
         wrapper.append(this._getXMLDOMToDump());


@@ -204,8 +348,9 @@ $.extend(ElementNode.prototype, DocumentNode.prototype, {
 var TextNode = function(nativeNode, document) {
     DocumentNode.call(this, nativeNode, document);
 };
 var TextNode = function(nativeNode, document) {
     DocumentNode.call(this, nativeNode, document);
 };

+TextNode.prototype = Object.create(DocumentNode.prototype);

 
 

-$.extend(TextNode.prototype, DocumentNode.prototype, {
+$.extend(TextNode.prototype, {

     nodeType: Node.TEXT_NODE,
 
     getText: function() {
     nodeType: Node.TEXT_NODE,
 
     getText: function() {


@@ -227,6 +372,58 @@ $.extend(TextNode.prototype, DocumentNode.prototype, {
         this.triggerTextChangeEvent();
     },
 
         this.triggerTextChangeEvent();
     },
 

+    wrapWith: function(desc) {
+        if(typeof desc.start === 'number' && typeof desc.end === 'number') {
+            return this.document._wrapText({
+                inside: this.parent(),
+                textNodeIdx: this.parent().indexOf(this),
+                offsetStart: Math.min(desc.start, desc.end),
+                offsetEnd: Math.max(desc.start, desc.end),
+                _with: {tagName: desc.tagName, attrs: desc.attrs}
+            });
+        } else {
+            return DocumentNode.prototype.wrapWith.call(this, desc);
+        }
+    },
+
+    split: function(params) {
+        var parentElement = this.parent(),
+            passed = false,
+            succeedingChildren = [],
+            prefix = this.getText().substr(0, params.offset),
+            suffix = this.getText().substr(params.offset);
+
+        parentElement.contents().forEach(function(child) {
+            if(passed) {
+                succeedingChildren.push(child);
+            }
+            if(child.sameNode(this)) {
+                passed = true;
+            }
+        }.bind(this));
+
+        if(prefix.length > 0) {
+            this.setText(prefix);
+        }
+        else {
+            this.detach();
+        }
+
+        var attrs = {};
+        parentElement.getAttrs().forEach(function(attr) {attrs[attr.name] = attr.value; });
+        var newElement = this.document.createDocumentNode({tagName: parentElement.getTagName(), attrs: attrs});
+        parentElement.after(newElement);
+
+        if(suffix.length > 0) {
+            newElement.append({text: suffix});
+        }
+        succeedingChildren.forEach(function(child) {
+            newElement.append(child);
+        });
+
+        return {first: parentElement, second: newElement};
+    },
+

     triggerTextChangeEvent: function() {
         var event = new events.ChangeEvent('nodeTextChange', {node: this});
         this.document.trigger('change', event);
     triggerTextChangeEvent: function() {
         var event = new events.ChangeEvent('nodeTextChange', {node: this});
         this.document.trigger('change', event);


@@ -235,7 +432,7 @@ $.extend(TextNode.prototype, DocumentNode.prototype, {
 
 
 var parseXML = function(xml) {
 
 
 var parseXML = function(xml) {

-    return $(xml)[0];
+    return $($.trim(xml))[0];

 };
 
 var Document = function(xml) {
 };
 
 var Document = function(xml) {


@@ -246,15 +443,28 @@ $.extend(Document.prototype, Backbone.Events, {
     ElementNodeFactory: ElementNode,
     TextNodeFactory: TextNode,
 
     ElementNodeFactory: ElementNode,
     TextNodeFactory: TextNode,
 

-    createElementNode: function(from) {
-        if(!(from instanceof HTMLElement)) {
-            from = $('<' + from.tagName + '>')[0];
-        }
-        return new this.ElementNodeFactory(from, this);
-    },
+    createDocumentNode: function(from) {
+        if(!(from instanceof Node)) {
+            if(from.text !== undefined) {
+                /* globals document */
+                from = document.createTextNode(from.text);
+            } else {
+                var node = $('<' + from.tagName + '>');

 
 

-    createTextNode: function(nativeNode) {
-        return new this.TextNodeFactory(nativeNode, this);
+                _.keys(from.attrs || {}).forEach(function(key) {
+                    node.attr(key, from.attrs[key]);
+                });
+
+                from = node[0];
+            }
+        }
+        var Factory;
+        if(from.nodeType === Node.TEXT_NODE) {
+            Factory = this.TextNodeFactory;
+        } else if(from.nodeType === Node.ELEMENT_NODE) {
+            Factory = this.ElementNodeFactory;
+        }
+        return new Factory(from, this);

     },
 
     loadXML: function(xml, options) {
     },
 
     loadXML: function(xml, options) {


@@ -267,12 +477,146 @@ $.extend(Document.prototype, Backbone.Events, {
 
     toXML: function() {
         return this.root.toXML();
 
     toXML: function() {
         return this.root.toXML();

+    },
+
+    containsNode: function(node) {
+        return this.root && (node.nativeNode === this.root.nativeNode || node._$.parents().index(this.root._$) !== -1);
+    },
+
+    wrapNodes: function(params) {
+        if(!(params.node1.parent().sameNode(params.node2.parent()))) {
+            throw new Error('Wrapping non-sibling nodes not supported.');
+        }
+
+        var parent = params.node1.parent(),
+            parentContents = parent.contents(),
+            wrapper = this.createDocumentNode({
+                tagName: params._with.tagName,
+                attrs: params._with.attrs}),
+            idx1 = parent.indexOf(params.node1),
+            idx2 = parent.indexOf(params.node2);
+
+        if(idx1 > idx2) {
+            var tmp = idx1;
+            idx1 = idx2;
+            idx2 = tmp;
+        }
+
+        var insertingMethod, insertingTarget;
+        if(idx1 === 0) {
+            insertingMethod = 'prepend';
+            insertingTarget = parent;
+        } else {
+            insertingMethod = 'after';
+            insertingTarget = parentContents[idx1-1];
+        }
+
+        for(var i = idx1; i <= idx2; i++) {
+            wrapper.append(parentContents[i].detach());
+        }
+
+        insertingTarget[insertingMethod](wrapper);
+        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') {
+            params.textNodeIdx = [params.textNodeIdx];
+        }
+        
+        var contentsInside = params.inside.contents(),
+            idx1 = Math.min.apply(Math, params.textNodeIdx),
+            idx2 = Math.max.apply(Math, params.textNodeIdx),
+            textNode1 = contentsInside[idx1],
+            textNode2 = contentsInside[idx2],
+            sameNode = textNode1.sameNode(textNode2),
+            prefixOutside = textNode1.getText().substr(0, params.offsetStart),
+            prefixInside = textNode1.getText().substr(params.offsetStart),
+            suffixInside = textNode2.getText().substr(0, params.offsetEnd),
+            suffixOutside = textNode2.getText().substr(params.offsetEnd)
+        ;
+
+        if(!(textNode1.parent().sameNode(textNode2.parent()))) {
+            throw new Error('Wrapping text in non-sibling text nodes not supported.');
+        }
+        
+        var wrapperElement = this.createDocumentNode({tagName: params._with.tagName, attrs: params._with.attrs});
+        textNode1.after(wrapperElement);
+        textNode1.detach();
+        
+        if(prefixOutside.length > 0) {
+            wrapperElement.before({text:prefixOutside});
+        }
+        if(sameNode) {
+            var core = textNode1.getText().substr(params.offsetStart, params.offsetEnd - params.offsetStart);
+            wrapperElement.append({text: core});
+        } else {
+            textNode2.detach();
+            if(prefixInside.length > 0) {
+                wrapperElement.append({text: prefixInside});
+            }
+            for(var i = idx1 + 1; i < idx2; i++) {
+                wrapperElement.append(contentsInside[i]);
+            }
+            if(suffixInside.length > 0) {
+                wrapperElement.append({text: suffixInside});
+            }
+        }
+        if(suffixOutside.length > 0) {
+            wrapperElement.after({text: suffixOutside});
+        }
+        return wrapperElement;
+    },
+
+    trigger: function() {
+        //console.log('trigger: ' + arguments[0] + (arguments[1] ? ', ' + arguments[1].type : ''));
+        Backbone.Events.trigger.apply(this, arguments);
+    },
+
+    getNodeInsertion: function(node) {
+        var insertion = {};
+        if(node instanceof DocumentNode) {
+            insertion.ofNode = node;
+            insertion.insertsNew = !this.containsNode(node);
+        } else {
+          insertion.ofNode = this.createDocumentNode(node);
+          insertion.insertsNew = true;
+        }
+        return insertion;
+    },
+
+    replaceRoot: function(node) {
+        var insertion = this.getNodeInsertion(node);
+        this.root.detach();
+        defineDocumentProperties(this, insertion.ofNode._$);
+        insertion.ofNode.triggerChangeEvent('nodeAdded');
+        return insertion.ofNode;

     }
 });
 
 var defineDocumentProperties = function(doc, $document) {
     Object.defineProperty(doc, 'root', {get: function() {
     }
 });
 
 var defineDocumentProperties = function(doc, $document) {
     Object.defineProperty(doc, 'root', {get: function() {

-        return doc.createElementNode($document[0]);
+        return doc.createDocumentNode($document[0]);

     }, configurable: true});
     Object.defineProperty(doc, 'dom', {get: function() {
         return $document[0];
     }, configurable: true});
     Object.defineProperty(doc, 'dom', {get: function() {
         return $document[0];


@@ -281,7 +625,7 @@ var defineDocumentProperties = function(doc, $document) {
 
 return {
     documentFromXML: function(xml) {
 
 return {
     documentFromXML: function(xml) {

-        return new Document(parseXML(xml));
+        return new Document(xml);

     },
 
     elementNodeFromXML: function(xml) {
     },
 
     elementNodeFromXML: function(xml) {