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integration wip: handle backspace/delete
[fnpeditor.git] / src / editor / modules / documentCanvas / canvas / canvas.js
diff --git a/src/editor/modules/documentCanvas/canvas/canvas.js b/src/editor/modules/documentCanvas/canvas/canvas.js
index d8db2bc..48f03de 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/canvas.js
+++ b/src/editor/modules/documentCanvas/canvas/canvas.js
@@ -4,200 +4,102 @@ define([
 'libs/backbone',
 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/keyboard',
 'libs/backbone',
 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/keyboard',
-'modules/documentCanvas/canvas/utils'
-], function($, _, Backbone, documentElement, keyboard, utils) {
+'modules/documentCanvas/canvas/utils',
+'modules/documentCanvas/canvas/wlxmlListener'
+], function($, _, Backbone, documentElement, keyboard, utils, wlxmlListener) {
     
 'use strict';
 
     
 'use strict';
 
-var Canvas = function(wlxml, publisher) {
+var Canvas = function(wlxmlDocument, publisher) {
     this.eventBus = _.extend({}, Backbone.Events);
     this.eventBus = _.extend({}, Backbone.Events);
-    this.loadWlxml(wlxml);
+    this.wrapper = $('<div>').addClass('canvas-wrapper').attr('contenteditable', true);
+    this.wlxmlListener = wlxmlListener.create(this);
+    this.loadWlxmlDocument(wlxmlDocument);
     this.publisher = publisher ? publisher : function() {};
 };
 
 $.extend(Canvas.prototype, {
 
     this.publisher = publisher ? publisher : function() {};
 };
 
 $.extend(Canvas.prototype, {
 
-    loadWlxml: function(wlxml) {
-        var d = wlxml ? $($.trim(wlxml)) : null;
-        if(d) {
-            this.wrapper = $('<div>').addClass('canvas-wrapper').attr('contenteditable', true);
-            this.wrapper.append(d);
-            var canvas = this;
-
-            this.wrapper.find('*').replaceWith(function() {
-                var currentTag = $(this);
-                if(currentTag.attr('wlxml-tag'))
-                    return;
-
-                var meta = {}, others = {};
-                for(var i = 0; i < this.attributes.length; i++) {
-                    var attr = this.attributes[i];
-                    if(attr.name.substr(0, 5) === 'meta-')
-                        meta[attr.name.substr(5)] = attr.value;
-                    else if(attr.name !== 'class')
-                        others[attr.name] = attr.value;
-                }
+    loadWlxmlDocument: function(wlxmlDocument) {
+        if(!wlxmlDocument) {
+            return false;
+        }
 
 
-                var element = canvas.createNodeElement({
-                    tag: currentTag.prop('tagName').toLowerCase(),
-                    klass: currentTag.attr('class'),
-                    meta: meta,
-                    others: others,
-                    rawChildren: currentTag.contents(),
-                    prepopulateOnEmpty: true
-                });
-
-                ['orig-before', 'orig-after', 'orig-begin', 'orig-end'].forEach(function(attr) {
-                    element.data(attr, '');
-                });
-                return element.dom();
-            });
+        var canvasDOM = this.generateCanvasDOM(wlxmlDocument.root);
 
 
-            var FIRST_CONTENT_INDEX = 0;
+        this.wrapper.empty();
+        this.wrapper.append(canvasDOM);
+        this.d = this.wrapper.children(0);
+        this.setupEventHandling();
 
 
-            // @@ TODO - refactor!
-            var getNode = function(element) {
-                return element.children('[document-element-content]');
-            }
+        this.wlxmlListener.listenTo(wlxmlDocument);
+        this.wlxmlDocument = wlxmlDocument;
+    },
 
 
-            this.wrapper.find(':not(iframe)').addBack().contents()
-                .filter(function() {return this.nodeType === Node.TEXT_NODE})
-                .each(function() {
-
-                    // TODO: use DocumentElement API
-
-                    var el = $(this),
-                        text = {original: el.text(), trimmed: $.trim(el.text())},
-                        elParent = el.parent(),
-                        hasSpanParent = elParent.attr('wlxml-tag') === 'span',
-                        hasSpanBefore = el.prev().length > 0  && getNode($(el.prev()[0])).attr('wlxml-tag') === 'span',
-                        hasSpanAfter = el.next().length > 0 && getNode($(el.next()[0])).attr('wlxml-tag') === 'span';
-
-                    if(el.parent().hasClass('canvas-widget') || elParent.attr('document-text-element') !== undefined)
-                        return true; // continue
-
-                    var addInfo = function(toAdd, where) {
-                        var parentContents = elParent.contents(),
-                            idx = parentContents.index(el[0]),
-                            prev = idx > FIRST_CONTENT_INDEX ? parentContents[idx-1] : null,
-                            next = idx < parentContents.length - 1 ? parentContents[idx+1] : null,
-                            target, key;
-
-                        if(where === 'above') {
-                            target = prev ? $(prev) : elParent.parent();
-                            key = prev ? 'orig-after' : 'orig-begin';
-                        } else if(where === 'below') {
-                            target = next ? $(next) : elParent.parent();
-                            key = next ? 'orig-before' : 'orig-end';
-                        } else { throw new Object;}
-
-                        target.data(key, toAdd);
-                    }
+    generateCanvasDOM: function(wlxmlNode) {
+        var element = documentElement.DocumentNodeElement.create(wlxmlNode, this);
+        return element.dom();
+    },
 
 
-                    text.transformed = text.trimmed;
-                    
-                    if(hasSpanParent || hasSpanBefore || hasSpanAfter) {
-                        var startSpace = /\s/g.test(text.original.substr(0,1)),
-                            endSpace = /\s/g.test(text.original.substr(-1)) && text.original.length > 1;
-                        text.transformed = (startSpace && (hasSpanParent || hasSpanBefore) ? ' ' : '')
-                                    + text.trimmed
-                                    + (endSpace && (hasSpanParent || hasSpanAfter) ? ' ' : '');
-                    } else {
-                        if(text.trimmed.length === 0 && text.original.length > 0 && elParent.contents().length === 1)
-                            text.transformed = ' ';
-                    }
+    setupEventHandling: function() {
+        var canvas = this;
+        this.wrapper.on('keyup keydown keypress', function(e) {
+            keyboard.handleKey(e, this);
+        }.bind(this));
 
 
-                    if(!text.transformed) {
-                        addInfo(text.original, 'below');
-                        el.remove();
-                        return true; // continue
-                    }
+        this.wrapper.on('click', '[document-node-element], [document-text-element]', function(e) {
+            e.stopPropagation();
+            canvas.setCurrentElement(canvas.getDocumentElement(e.currentTarget), {caretTo: false});
+        });
 
 
-                    if(text.transformed !== text.original) {
-                        if(!text.trimmed) {
-                            addInfo(text.original, 'below');
-                        } else {
-                            var startingMatch = text.original.match(/^\s+/g),
-                                endingMatch = text.original.match(/\s+$/g),
-                                startingWhiteSpace = startingMatch ? startingMatch[0] : null,
-                                endingWhiteSpace = endingMatch ? endingMatch[0] : null;
-
-                            if(endingWhiteSpace) {
-                                if(text.transformed[text.transformed.length - 1] === ' ' && endingWhiteSpace[0] === ' ')
-                                    endingWhiteSpace = endingWhiteSpace.substr(1);
-                                addInfo(endingWhiteSpace, 'below');
-                            }
-
-                            if(startingWhiteSpace) {
-                                if(text.transformed[0] === ' ' && startingWhiteSpace[startingWhiteSpace.length-1] === ' ')
-                                    startingWhiteSpace = startingWhiteSpace.substr(0, startingWhiteSpace.length -1);
-                                addInfo(startingWhiteSpace, 'above');
-                            }
-                        }
+        var observer = new MutationObserver(function(mutations) {
+            mutations.forEach(function(mutation) {
+                if(documentElement.DocumentTextElement.isContentContainer(mutation.target)) {
+                    observer.disconnect();
+                    if(mutation.target.data === '')
+                        mutation.target.data = utils.unicode.ZWS;
+                    else if(mutation.oldValue === utils.unicode.ZWS) {
+                        mutation.target.data = mutation.target.data.replace(utils.unicode.ZWS, '');
+                        canvas._moveCaretToTextElement(canvas.getDocumentElement(mutation.target), 'end');
                     }
                     }
+                    observer.observe(canvas.d[0], config);
+                    canvas.publisher('contentChanged');
 
 
-                    var element = documentElement.DocumentTextElement.create({text: text.transformed});
-                    el.replaceWith(element.dom());
-                });
-            
-            this.d = this.wrapper.children(0);
-
-            this.wrapper.on('keyup keydown keypress', function(e) {
-                keyboard.handleKey(e, this);
-            }.bind(this));
-
-            this.wrapper.on('click', '[document-node-element], [document-text-element]', function(e) {
-                e.stopPropagation();
-                canvas.setCurrentElement(canvas.getDocumentElement(e.currentTarget), {caretTo: false});
-            });
-
-            var observer = new MutationObserver(function(mutations) {
-                mutations.forEach(function(mutation) {
-                    if(documentElement.DocumentTextElement.isContentContainer(mutation.target)) {
-                        observer.disconnect();
-                        if(mutation.target.data === '')
-                            mutation.target.data = utils.unicode.ZWS;
-                        else if(mutation.oldValue === utils.unicode.ZWS) {
-                            mutation.target.data = mutation.target.data.replace(utils.unicode.ZWS, '');
-                            canvas._moveCaretToTextElement(canvas.getDocumentElement(mutation.target), 'end');
-                        }
-                        observer.observe(canvas.d[0], config);
-                        canvas.publisher('contentChanged');
-                    }
-                });
-            });
-            var config = { attributes: false, childList: false, characterData: true, subtree: true, characterDataOldValue: true};
-            observer.observe(this.d[0], config);
-
-
-            this.wrapper.on('mouseover', '[document-node-element], [document-text-element]', function(e) {
-                var el = canvas.getDocumentElement(e.currentTarget);
-                if(!el)
-                    return;
-                e.stopPropagation();
-                if(el instanceof documentElement.DocumentTextElement)
-                    el = el.parent();
-                el.toggleLabel(true);
-            });
-            this.wrapper.on('mouseout', '[document-node-element], [document-text-element]', function(e) {
-                var el = canvas.getDocumentElement(e.currentTarget);
-                if(!el)
-                    return;
-                e.stopPropagation();
-                if(el instanceof documentElement.DocumentTextElement)
-                    el = el.parent();
-                el.toggleLabel(false);
-            });
+                    var textElement = canvas.getDocumentElement(mutation.target),
+                        toSet = mutation.target.data !== utils.unicode.ZWS ? mutation.target.data : '';
 
 
-            this.eventBus.on('elementToggled', function(toggle, element) {
-                if(!toggle) {
-                    canvas.setCurrentElement(element.getPreviousTextElement());
+                    textElement.data('wlxmlNode').setText(toSet);
                 }
                 }
-            })
+            });
+        });
+        var config = { attributes: false, childList: false, characterData: true, subtree: true, characterDataOldValue: true};
+        observer.observe(this.d[0], config);
+
+
+        this.wrapper.on('mouseover', '[document-node-element], [document-text-element]', function(e) {
+            var el = canvas.getDocumentElement(e.currentTarget);
+            if(!el)
+                return;
+            e.stopPropagation();
+            if(el instanceof documentElement.DocumentTextElement)
+                el = el.parent();
+            el.toggleLabel(true);
+        });
+        this.wrapper.on('mouseout', '[document-node-element], [document-text-element]', function(e) {
+            var el = canvas.getDocumentElement(e.currentTarget);
+            if(!el)
+                return;
+            e.stopPropagation();
+            if(el instanceof documentElement.DocumentTextElement)
+                el = el.parent();
+            el.toggleLabel(false);
+        });
 
 
-        } else {
-            this.d = null;
-        }
+        this.eventBus.on('elementToggled', function(toggle, element) {
+            if(!toggle) {
+                canvas.setCurrentElement(element.getPreviousTextElement());
+            }
+        });
     },
 
     view: function() {
     },
 
     view: function() {
@@ -210,6 +112,11 @@ $.extend(Canvas.prototype, {
         return documentElement.DocumentNodeElement.fromHTMLElement(this.d.get(0), this); //{wlxmlTag: this.d.prop('tagName')};
     },
 
         return documentElement.DocumentNodeElement.fromHTMLElement(this.d.get(0), this); //{wlxmlTag: this.d.prop('tagName')};
     },
 
+    toggleElementHighlight: function(node, toggle) {
+        var element = utils.findCanvasElement(node);
+        element.toggleHighlight(toggle);
+    },
+
     createNodeElement: function(params) {
         return documentElement.DocumentNodeElement.create(params, this);
     },
     createNodeElement: function(params) {
         return documentElement.DocumentNodeElement.create(params, this);
     },
@@ -330,6 +237,10 @@ $.extend(Canvas.prototype, {
 
 
     setCurrentElement: function(element, params) {
 
 
     setCurrentElement: function(element, params) {
+        if(!(element instanceof documentElement.DocumentElement)) {
+            element = utils.findCanvasElement(element);
+        }
+
         params = _.extend({caretTo: 'end'}, params);
         var findFirstDirectTextChild = function(e, nodeToLand) {
             var byBrowser = this.getCursor().getPosition().element;
         params = _.extend({caretTo: 'end'}, params);
         var findFirstDirectTextChild = function(e, nodeToLand) {
             var byBrowser = this.getCursor().getPosition().element;
@@ -368,7 +279,7 @@ $.extend(Canvas.prototype, {
             if(params.caretTo || !textElementToLand.sameNode(this.getCursor().getPosition().element))
                 this._moveCaretToTextElement(textElementToLand, params.caretTo); // as method on element?
             if(!(textElementToLand.sameNode(currentTextElement)))
             if(params.caretTo || !textElementToLand.sameNode(this.getCursor().getPosition().element))
                 this._moveCaretToTextElement(textElementToLand, params.caretTo); // as method on element?
             if(!(textElementToLand.sameNode(currentTextElement)))
-                this.publisher('currentTextElementSet', textElementToLand);
+                this.publisher('currentTextElementSet', textElementToLand.data('wlxmlNode'));
         } else {
             document.getSelection().removeAllRanges();
         }
         } else {
             document.getSelection().removeAllRanges();
         }
@@ -376,7 +287,7 @@ $.extend(Canvas.prototype, {
         if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
             _markAsCurrent(nodeElementToLand);
 
         if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
             _markAsCurrent(nodeElementToLand);
 
-            this.publisher('currentNodeElementSet', nodeElementToLand);
+            this.publisher('currentNodeElementSet', nodeElementToLand.data('wlxmlNode'));
         }
     },
 
         }
     },
 
@@ -649,8 +560,8 @@ $.extend(Cursor.prototype, {
 })
 
 return {
 })
 
 return {
-    fromXML: function(xml, publisher) {
-        return new Canvas(xml, publisher);
+    fromXMLDocument: function(wlxmlDocument, publisher) {
+        return new Canvas(wlxmlDocument, publisher);
     }
 };
 
     }
 };