Refactoring - moving key event handlers out of canvas object

[fnpeditor.git] / modules / documentCanvas / canvas / canvas.js

diff --git a/modules/documentCanvas/canvas/canvas.js b/modules/documentCanvas/canvas/canvas.js
index 8882c1c..4b43c8c 100644 (file)
--- a/modules/documentCanvas/canvas/canvas.js
+++ b/modules/documentCanvas/canvas/canvas.js
@@ -1,12 +1,16 @@
 define([
 'libs/jquery-1.9.1.min',
 'libs/underscore-min',
 define([
 'libs/jquery-1.9.1.min',
 'libs/underscore-min',

-'modules/documentCanvas/canvas/documentElement'
-], function($, _, documentElement) {
+'libs/backbone-min',
+'modules/documentCanvas/canvas/documentElement',
+'modules/documentCanvas/canvas/keyboard',
+'modules/documentCanvas/canvas/utils'
+], function($, _, 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() {};
 };


@@ -18,7 +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'))


@@ -37,38 +42,56 @@ $.extend(Canvas.prototype, {
                     tag: currentTag.prop('tagName').toLowerCase(),
                     klass: currentTag.attr('class'),
                     meta: meta,
                     tag: currentTag.prop('tagName').toLowerCase(),
                     klass: currentTag.attr('class'),
                     meta: meta,

-                    others: others
-                });
+                    others: others,
+                    rawChildren: currentTag.contents(),
+                    prepopulateOnEmpty: true
+                }, canvas);

 
 

-                element.dom().append(currentTag.contents());
-                ['orig-before', 'orig-append'].forEach(function(attr) {
-                    element.data(attr, ['']);
+                ['orig-before', 'orig-after', 'orig-begin', 'orig-end'].forEach(function(attr) {
+                    element.data(attr, '');

                 });
                 return element.dom();
             });
 
                 });
                 return element.dom();
             });
 

+            var FIRST_CONTENT_INDEX = 0;
+
+            // @@ TODO - refactor!
+            var getNode = function(element) {
+                return element.children('[document-element-content]');
+            }
+

             this.wrapper.find(':not(iframe)').addBack().contents()
                 .filter(function() {return this.nodeType === Node.TEXT_NODE})
                 .each(function() {
             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',
                     // 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  && $(el.prev()[0]).attr('wlxml-tag') === 'span',
-                        hasSpanAfter = el.next().length > 0 && $(el.next()[0]).attr('wlxml-tag') === 'span';
+                        hasSpanBefore = el.prev().length > 0  && getNode($(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') || elParent.attr('document-text-element') !== undefined)
+                        return true; // continue

 
 

-                    var addInfo = function(toAdd) {
+                    var addInfo = function(toAdd, where) {

                         var parentContents = elParent.contents(),
                             idx = parentContents.index(el[0]),
                         var parentContents = elParent.contents(),
                             idx = parentContents.index(el[0]),

-                            next = idx < parentContents.length - 1 ? parentContents[idx+1] : null;
-                        if(next) {
-                            $(next).data('orig-before', toAdd);
-                        } else {
-                            elParent.data('orig-append', toAdd);
-                        }
+                            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);

                     }
 
                     text.transformed = text.trimmed;
                     }
 
                     text.transformed = text.trimmed;


@@ -85,15 +108,14 @@ $.extend(Canvas.prototype, {
                     }
 
                     if(!text.transformed) {
                     }
 
                     if(!text.transformed) {

-                        addInfo([text.original]);
+                        addInfo(text.original, 'below');

                         el.remove();
                         return true; // continue
                     }
 
                     if(text.transformed !== text.original) {
                         el.remove();
                         return true; // continue
                     }
 
                     if(text.transformed !== text.original) {

-                        var toAdd = [];

                         if(!text.trimmed) {
                         if(!text.trimmed) {

-                            toAdd.push(text.original);
+                            addInfo(text.original, 'below');

                         } else {
                             var startingMatch = text.original.match(/^\s+/g),
                                 endingMatch = text.original.match(/\s+$/g),
                         } else {
                             var startingMatch = text.original.match(/^\s+/g),
                                 endingMatch = text.original.match(/\s+$/g),


@@ -103,16 +125,15 @@ $.extend(Canvas.prototype, {
                             if(endingWhiteSpace) {
                                 if(text.transformed[text.transformed.length - 1] === ' ' && endingWhiteSpace[0] === ' ')
                                     endingWhiteSpace = endingWhiteSpace.substr(1);
                             if(endingWhiteSpace) {
                                 if(text.transformed[text.transformed.length - 1] === ' ' && endingWhiteSpace[0] === ' ')
                                     endingWhiteSpace = endingWhiteSpace.substr(1);

-                                toAdd.push(endingWhiteSpace);
+                                addInfo(endingWhiteSpace, 'below');

                             }
 
                             if(startingWhiteSpace) {
                                 if(text.transformed[0] === ' ' && startingWhiteSpace[startingWhiteSpace.length-1] === ' ')
                                     startingWhiteSpace = startingWhiteSpace.substr(0, startingWhiteSpace.length -1);
                             }
 
                             if(startingWhiteSpace) {
                                 if(text.transformed[0] === ' ' && startingWhiteSpace[startingWhiteSpace.length-1] === ' ')
                                     startingWhiteSpace = startingWhiteSpace.substr(0, startingWhiteSpace.length -1);

-                                toAdd.push(startingWhiteSpace);
+                                addInfo(startingWhiteSpace, 'above');

                             }
                         }
                             }
                         }

-                        addInfo(toAdd);

                     }
 
                     var element = documentElement.DocumentTextElement.create({text: text.transformed});
                     }
 
                     var element = documentElement.DocumentTextElement.create({text: text.transformed});


@@ -121,39 +142,60 @@ $.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: '\u200B'}, this));
-                            canvas.setCurrentElement(goto);
+            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('keyup', function(e) {
-                if(e.which >= 37 && e.which <= 40)
-                    canvas.setCurrentElement(canvas.getCursor().getPosition().element, {caretTo: false})
-            });

 
 

-            this.wrapper.on('click', '[wlxml-tag], [wlxml-text]', function(e) {
+            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();
                 e.stopPropagation();

-                canvas.setCurrentElement(canvas.getDocumentElement(e.target), {caretTo: false});
+                if(el instanceof documentElement.DocumentTextElement)
+                    el = el.parent();
+                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;
         }


@@ -209,6 +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);


@@ -220,19 +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() {


@@ -260,7 +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);


@@ -320,8 +405,9 @@ $.extend(Canvas.prototype, {
     },
 
     toXML: function() {
     },
 
     toXML: function() {

-        var parent = $('<div>');
-        this.doc().toXML(parent, 0)
+        var parent = $('<div>'),
+            parts = this.doc().toXML(0);
+        parent.append(parts);

         return parent.html();
     }
 });
         return parent.html();
     }
 });


@@ -364,7 +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;


@@ -492,7 +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') {


@@ -500,7 +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') {


@@ -508,7 +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

             };
         }
         
             };
         }
         


@@ -521,11 +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') {


@@ -534,7 +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 {


@@ -548,11 +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

         }
     }
 })
         }
     }
 })