Refactoring - moving key event handlers out of canvas object
[fnpeditor.git] / modules / documentCanvas / canvas / canvas.js
index f96e62e..4b43c8c 100644 (file)
@@ -1,13 +1,16 @@
 define([
 'libs/jquery-1.9.1.min',
 'libs/underscore-min',
 define([
 'libs/jquery-1.9.1.min',
 'libs/underscore-min',
+'libs/backbone-min',
 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/documentElement',
+'modules/documentCanvas/canvas/keyboard',
 'modules/documentCanvas/canvas/utils'
 'modules/documentCanvas/canvas/utils'
-], function($, _, documentElement, utils) {
+], function($, _, Backbone, documentElement, keyboard, utils) {
     
 'use strict';
 
 var Canvas = function(wlxml, publisher) {
     
 'use strict';
 
 var Canvas = function(wlxml, publisher) {
+    this.eventBus = _.extend({}, Backbone.Events);
     this.loadWlxml(wlxml);
     this.publisher = publisher ? publisher : function() {};
 };
     this.loadWlxml(wlxml);
     this.publisher = publisher ? publisher : function() {};
 };
@@ -19,7 +22,8 @@ $.extend(Canvas.prototype, {
         if(d) {
             this.wrapper = $('<div>').addClass('canvas-wrapper').attr('contenteditable', true);
             this.wrapper.append(d);
         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'))
             this.wrapper.find('*').replaceWith(function() {
                 var currentTag = $(this);
                 if(currentTag.attr('wlxml-tag'))
@@ -39,8 +43,9 @@ $.extend(Canvas.prototype, {
                     klass: currentTag.attr('class'),
                     meta: meta,
                     others: others,
                     klass: currentTag.attr('class'),
                     meta: meta,
                     others: others,
-                    rawChildren: currentTag.contents()
-                });
+                    rawChildren: currentTag.contents(),
+                    prepopulateOnEmpty: true
+                }, canvas);
 
                 ['orig-before', 'orig-after', 'orig-begin', 'orig-end'].forEach(function(attr) {
                     element.data(attr, '');
 
                 ['orig-before', 'orig-after', 'orig-begin', 'orig-end'].forEach(function(attr) {
                     element.data(attr, '');
@@ -68,7 +73,7 @@ $.extend(Canvas.prototype, {
                         hasSpanBefore = el.prev().length > 0  && getNode($(el.prev()[0])).attr('wlxml-tag') === 'span',
                         hasSpanAfter = el.next().length > 0 && getNode($(el.next()[0])).attr('wlxml-tag') === 'span';
 
                         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'))
+                    if(el.parent().hasClass('canvas-widget') || elParent.attr('document-text-element') !== undefined)
                         return true; // continue
 
                     var addInfo = function(toAdd, where) {
                         return true; // continue
 
                     var addInfo = function(toAdd, where) {
@@ -137,92 +142,36 @@ $.extend(Canvas.prototype, {
             
             this.d = this.wrapper.children(0);
 
             
             this.d = this.wrapper.children(0);
 
-            var canvas = this;
-            this.wrapper.on('keydown', function(e) {
-                if(e.which === 13) { 
-                    e.preventDefault();
-                    var cursor = canvas.getCursor();
-                    if(!cursor.isSelecting()) {
-                        var position = cursor.getPosition(),
-                            elements = position.element.split({offset: position.offset}),
-                            newEmpty,
-                            goto;
-
-                        if(position.offsetAtBeginning)
-                            newEmpty = elements.first;
-                        else if(position.offsetAtEnd)
-                            newEmpty = elements.second;
-                        if(newEmpty) {
-                            goto = newEmpty.append(documentElement.DocumentTextElement.create({text: ''}, this));
-                            canvas.setCurrentElement(goto);
-                        }
-                    }
-                }
-            });
-
+            this.wrapper.on('keyup keydown keypress', function(e) {
+                keyboard.handleKey(e, this);
+            }.bind(this));
 
 
-            var KEYS = {
-                ARROW_LEFT: 37,
-                ARROW_UP: 38,
-                ARROW_RIGHT: 39,
-                ARROW_DOWN: 40
-            }
-
-            this.wrapper.on('keyup', function(e) {
-                if(e.which >= 37 && e.which <= 40)
-                    canvas.setCurrentElement(canvas.getCursor().getPosition().element, {caretTo: false})
-            });
-         
-            this.wrapper.on('keydown', function(e) {
-                if(e.which >= 37 && e.which <= 40) {
-                    var position = canvas.getCursor().getPosition(),
-                        element = position.element;
-                    if(element && (element instanceof documentElement.DocumentTextElement)) {
-                        if(element.isEmpty()) {
-                            var direction, caretTo;
-                            if(e.which === KEYS.ARROW_LEFT  || e.which === KEYS.ARROW_UP) {
-                                direction = 'above';
-                                caretTo = 'end';
-                            } else {
-                                direction = 'below';
-                                caretTo = 'start';
-                            }
-                            var el = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, window.getSelection().focusNode))
-                            canvas.setCurrentElement(element, {caretTo: caretTo});
-                        } else {
-                            var txt = element.dom().contents()[0].data;
-                            if(e.which === KEYS.ARROW_LEFT && position.offset > 1 && txt.charAt(position.offset-2) === utils.unicode.ZWS) {
-                                e.preventDefault();
-                                canvas._moveCaretToTextElement(element, position.offset-2);
-                            }
-                            if(e.which === KEYS.ARROW_RIGHT && position.offset < txt.length - 1 && txt.charAt(position.offset+1) === utils.unicode.ZWS) {
-                                e.preventDefault();
-                                canvas._moveCaretToTextElement(element, position.offset+2);
-                            }
-                        }
-                    }
-
-
-                }
-            });
-
-            this.wrapper.on('click', '[wlxml-tag], [document-text-element]', function(e) {
+            this.wrapper.on('click', '[document-node-element], [document-text-element]', function(e) {
                 e.stopPropagation();
                 e.stopPropagation();
-                canvas.setCurrentElement(canvas.getDocumentElement(e.target), {caretTo: false});
+                canvas.setCurrentElement(canvas.getDocumentElement(e.currentTarget), {caretTo: false});
             });
 
             var observer = new MutationObserver(function(mutations) {
                 mutations.forEach(function(mutation) {
             });
 
             var observer = new MutationObserver(function(mutations) {
                 mutations.forEach(function(mutation) {
-                    if(documentElement.DocumentTextElement.isContentContainer(mutation.target) && mutation.target.data === '')
-                        mutation.target.data = utils.unicode.ZWS;
+                    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);
 
 
                 });
             });
             var config = { attributes: false, childList: false, characterData: true, subtree: true, characterDataOldValue: true};
             observer.observe(this.d[0], config);
 
 
-            this.wrapper.on('mouseover', '[wlxml-tag], [document-text-element]', function(e) {
-                var el = canvas.getDocumentElement(e.target);
+            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)
                     return;
                 e.stopPropagation();
@@ -230,8 +179,8 @@ $.extend(Canvas.prototype, {
                     el = el.parent();
                 el.toggleLabel(true);
             });
                     el = el.parent();
                 el.toggleLabel(true);
             });
-            this.wrapper.on('mouseout', '[wlxml-tag], [document-text-element]', function(e) {
-                var el = canvas.getDocumentElement(e.target);
+            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)
                     return;
                 e.stopPropagation();
@@ -240,6 +189,13 @@ $.extend(Canvas.prototype, {
                 el.toggleLabel(false);
             });
 
                 el.toggleLabel(false);
             });
 
+            this.eventBus.on('elementToggled', function(toggle, element) {
+                if(!toggle) {
+                    element = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]:visible', 'above', element.dom()[0]));
+                    canvas.setCurrentElement(element);
+                }
+            })
+
         } else {
             this.d = null;
         }
         } else {
             this.d = null;
         }
@@ -295,6 +251,59 @@ $.extend(Canvas.prototype, {
             wrapperElement.after({text: suffixOutside});
         return wrapperElement;
     },
             wrapperElement.after({text: suffixOutside});
         return wrapperElement;
     },
+
+    wrapElements: function(params) {
+        if(!(params.element1.parent().sameNode(params.element2.parent())))
+            return;
+
+        var parent = params.element1.parent(),
+            parentChildren = parent.children(),
+            wrapper = documentElement.DocumentNodeElement.create({
+                tag: params._with.tag,
+                klass: params._with.klass}),
+            idx1 = parent.childIndex(params.element1),
+            idx2 = parent.childIndex(params.element2);
+
+        if(idx1 > idx2) {
+            var tmp = idx1;
+            idx1 = idx2;
+            idx2 = tmp;
+        }
+
+        var insertingMethod, insertingTarget;
+        if(idx1 === 0) {
+            insertingMethod = 'prepend';
+            insertingTarget = parent;
+        } else {
+            insertingMethod = 'after';
+            insertingTarget = parentChildren[idx1-1];
+        }
+
+        for(var i = idx1; i <= idx2; i++) {
+            wrapper.append(parentChildren[i].detach());
+        }
+
+        insertingTarget[insertingMethod](wrapper);
+        return wrapper;
+    },
+
+    getSiblingParents: function(params) {
+        var parents1 = [params.element1].concat(params.element1.parents()).reverse(),
+            parents2 = [params.element2].concat(params.element2.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 {element1: parents1[i], element2: parents2[i]};
+    },
+
     getDocumentElement: function(from) {
         if(from instanceof HTMLElement || from instanceof Text) {
            return documentElement.DocumentElement.fromHTMLElement(from, this);
     getDocumentElement: function(from) {
         if(from instanceof HTMLElement || from instanceof Text) {
            return documentElement.DocumentElement.fromHTMLElement(from, this);
@@ -306,19 +315,9 @@ $.extend(Canvas.prototype, {
 
     list: {},
 
 
     list: {},
 
-
-
-    highlightElement: function(element) {
-        this.wrapper.find('.highlighted-element').removeClass('highlighted-element');
-        element.dom().addClass('highlighted-element');
-    },
-
-    dimElement: function(element) {
-        element.dom().removeClass('highlighted-element');
-    },
     
     getCurrentNodeElement: function() {
     
     getCurrentNodeElement: function() {
-        return this.getDocumentElement(this.wrapper.find('.current-node-element')[0]);
+        return this.getDocumentElement(this.wrapper.find('.current-node-element').parent()[0]);
     },
 
     getCurrentTextElement: function() {
     },
 
     getCurrentTextElement: function() {
@@ -346,7 +345,7 @@ $.extend(Canvas.prototype, {
                 element.dom().addClass('current-text-element');
             } else {
                 this.wrapper.find('.current-node-element').removeClass('current-node-element')
                 element.dom().addClass('current-text-element');
             } else {
                 this.wrapper.find('.current-node-element').removeClass('current-node-element')
-                element.dom().addClass('current-node-element');
+                element._container().addClass('current-node-element');
                 this.publisher('currentElementChanged', element);
             }
         }.bind(this);
                 this.publisher('currentElementChanged', element);
             }
         }.bind(this);
@@ -451,7 +450,8 @@ $.extend(Canvas.prototype.list, {
         
         var toret;
         if(parent.is('list')) {
         
         var toret;
         if(parent.is('list')) {
-            listElement.wrapWithNodeElement({tag: 'div', klass: 'item'});
+            var item = listElement.wrapWithNodeElement({tag: 'div', klass: 'item'});
+            item.exec('toggleBullet', false);
             toret = listElement.parent();
         } else {
             toret = listElement;
             toret = listElement.parent();
         } else {
             toret = listElement;
@@ -579,7 +579,7 @@ $.extend(Cursor.prototype, {
             anchorElement = this.canvas.getDocumentElement(selection.anchorNode),
             focusElement = this.canvas.getDocumentElement(selection.focusNode);
         
             anchorElement = this.canvas.getDocumentElement(selection.anchorNode),
             focusElement = this.canvas.getDocumentElement(selection.focusNode);
         
-        if(anchorElement instanceof documentElement.DocumentNodeElement || focusElement instanceof documentElement.DocumentNodeElement)
+        if((!anchorElement) || (anchorElement instanceof documentElement.DocumentNodeElement) || (!focusElement) || focusElement instanceof documentElement.DocumentNodeElement)
             return {};
 
         if(which === 'anchor') {
             return {};
 
         if(which === 'anchor') {
@@ -587,7 +587,7 @@ $.extend(Cursor.prototype, {
                 element: anchorElement,
                 offset: selection.anchorOffset,
                 offsetAtBeginning: selection.anchorOffset === 0,
                 element: anchorElement,
                 offset: selection.anchorOffset,
                 offsetAtBeginning: selection.anchorOffset === 0,
-                offsetAtEnd: anchorElement && anchorElement.getText().length === selection.anchorOffset
+                offsetAtEnd: selection.anchorNode.data.length === selection.anchorOffset
             };
         }
         if(which === 'focus') {
             };
         }
         if(which === 'focus') {
@@ -595,7 +595,7 @@ $.extend(Cursor.prototype, {
                 element: focusElement,
                 offset: selection.focusOffset,
                 offsetAtBeginning: selection.focusOffset === 0,
                 element: focusElement,
                 offset: selection.focusOffset,
                 offsetAtBeginning: selection.focusOffset === 0,
-                offsetAtEnd: focusElement && focusElement.getText().length === selection.focusOffset
+                offsetAtEnd: selection.focusNode.data.length === selection.focusOffset
             };
         }
         
             };
         }
         
@@ -608,11 +608,11 @@ $.extend(Cursor.prototype, {
             if(anchorFirst) {
                 if(which === 'start') {
                     element = anchorElement;
             if(anchorFirst) {
                 if(which === 'start') {
                     element = anchorElement;
-                    offset = selection.anchorOffset;
+                    offset = selection.anchorOffset
                 }
                 else if(which === 'end') {
                     element = focusElement,
                 }
                 else if(which === 'end') {
                     element = focusElement,
-                    offset = selection.focusOffset;
+                    offset = selection.focusOffset
                 }
             } else {
                 if(which === 'start') {
                 }
             } else {
                 if(which === 'start') {
@@ -621,7 +621,7 @@ $.extend(Cursor.prototype, {
                 }
                 else if(which === 'end') {
                     element = anchorElement;
                 }
                 else if(which === 'end') {
                     element = anchorElement;
-                    offset = selection.anchorOffset;
+                    offset = selection.anchorOffset
                 }
             }
         } else {
                 }
             }
         } else {
@@ -635,11 +635,12 @@ $.extend(Cursor.prototype, {
             }
         }
 
             }
         }
 
+        var nodeLen = (element.sameNode(focusElement) ? selection.focusNode : selection.anchorNode).length;
         return {
             element: element,
             offset: offset,
             offsetAtBeginning: offset === 0,
         return {
             element: element,
             offset: offset,
             offsetAtBeginning: offset === 0,
-            offsetAtEnd: element.getText().length === offset
+            offsetAtEnd: nodeLen === offset
         }
     }
 })
         }
     }
 })