Setting caret after removing list completely

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

diff --git a/modules/documentCanvas/canvas/canvas.js b/modules/documentCanvas/canvas/canvas.js
index 45c7fe2..7143b79 100644 (file)
--- a/modules/documentCanvas/canvas/canvas.js
+++ b/modules/documentCanvas/canvas/canvas.js
@@ -6,8 +6,9 @@ define([
     
 'use strict';
 
     
 'use strict';
 

-var Canvas = function(wlxml) {
+var Canvas = function(wlxml, publisher) {

     this.loadWlxml(wlxml);
     this.loadWlxml(wlxml);

+    this.publisher = publisher ? publisher : function() {};

 };
 
 $.extend(Canvas.prototype, {
 };
 
 $.extend(Canvas.prototype, {


@@ -22,9 +23,18 @@ $.extend(Canvas.prototype, {
                 var currentTag = $(this);
                 if(currentTag.attr('wlxml-tag'))
                     return;
                 var currentTag = $(this);
                 if(currentTag.attr('wlxml-tag'))
                     return;

+
+                var meta = {};
+                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;
+                }
+

                 var element = documentElement.DocumentNodeElement.createDOM({
                     tag: currentTag.prop('tagName').toLowerCase(),
                 var element = documentElement.DocumentNodeElement.createDOM({
                     tag: currentTag.prop('tagName').toLowerCase(),

-                    klass: currentTag.attr('class')
+                    klass: currentTag.attr('class'),
+                    meta: meta

                 });
 
                 element.append(currentTag.contents());
                 });
 
                 element.append(currentTag.contents());


@@ -66,6 +76,40 @@ $.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', 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) {
+                e.stopPropagation();
+                canvas.setCurrentElement(canvas.getDocumentElement(e.target), {caretTo: false});
+            });
+

         } else {
             this.d = null;
         }
         } else {
             this.d = null;
         }


@@ -131,7 +175,105 @@ $.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() {
+        return this.getDocumentElement(this.wrapper.find('.current-node-element')[0]);
+    },
+
+    getCurrentTextElement: function() {
+        return this.getDocumentElement(this.wrapper.find('.current-text-element')[0]);
+    },
+
+
+
+    setCurrentElement: function(element, params) {
+        params = _.extend({caretTo: 'end'}, params);
+        var findFirstDirectTextChild = function(e, nodeToLand) {
+            var byBrowser = this.getCursor().getPosition().element;
+            if(byBrowser && byBrowser.parent().sameNode(nodeToLand))
+                return byBrowser;
+            var children = e.children();
+            for(var i = 0; i < children.length; i++) {
+                if(children[i] instanceof documentElement.DocumentTextElement)
+                    return children[i];
+            }
+            return null;
+        }.bind(this);
+        var _markAsCurrent = function(element) {
+            if(element instanceof documentElement.DocumentTextElement) {
+                this.wrapper.find('.current-text-element').removeClass('current-text-element');
+                element.dom().addClass('current-text-element');
+            } else {
+                this.wrapper.find('.current-node-element').removeClass('current-node-element')
+                element.dom().addClass('current-node-element');
+                this.publisher('currentElementChanged', element);
+            }
+        }.bind(this);
+
+
+        var isTextElement = element instanceof documentElement.DocumentTextElement,
+            nodeElementToLand = isTextElement ? element.parent() : element,
+            textElementToLand = isTextElement ? element : findFirstDirectTextChild(element, nodeElementToLand),
+            currentTextElement = this.getCurrentTextElement(),
+            currentNodeElement = this.getCurrentNodeElement();
+
+        if(currentTextElement && !(currentTextElement.sameNode(textElementToLand)))
+            this.wrapper.find('.current-text-element').removeClass('current-text-element');
+
+        if(textElementToLand) {
+            _markAsCurrent(textElementToLand);
+            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);
+        } else {
+            document.getSelection().removeAllRanges();
+        }
+
+        if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
+            _markAsCurrent(nodeElementToLand);
+
+            this.publisher('currentNodeElementSet', nodeElementToLand);
+        }
+    },
+
+    _moveCaretToTextElement: function(element, where) {
+        var range = document.createRange(),
+            node = element.dom().contents()[0];
+
+        if(typeof where !== 'number') {
+            range.selectNodeContents(node);
+        } else {
+            range.setStart(node, where);
+        }
+        
+        var collapseArg = true;
+        if(where === 'end')
+            collapseArg = false;
+        range.collapse(collapseArg);
+        
+        var selection = document.getSelection();
+
+        selection.removeAllRanges();
+        selection.addRange(range);
+        this.wrapper.focus(); // FF requires this for caret to be put where range colllapses, Chrome doesn't.
+    },
+
+    setCursorPosition: function(position) {
+        if(position.element)
+            this._moveCaretToTextElement(position.element, position.offset);
+    }

 });
 
 $.extend(Canvas.prototype.list, {
 });
 
 $.extend(Canvas.prototype.list, {


@@ -292,15 +434,31 @@ $.extend(Cursor.prototype, {
     getSelectionAnchor: function() {
         return this.getSelectionBoundry('anchor');
     },
     getSelectionAnchor: function() {
         return this.getSelectionBoundry('anchor');
     },

+    getSelectionFocus: function() {
+        return this.getSelectionBoundry('focus');
+    },

     getSelectionBoundry: function(which) {
         var selection = window.getSelection(),
             anchorElement = this.canvas.getDocumentElement(selection.anchorNode),
             focusElement = this.canvas.getDocumentElement(selection.focusNode);
         
     getSelectionBoundry: function(which) {
         var selection = window.getSelection(),
             anchorElement = this.canvas.getDocumentElement(selection.anchorNode),
             focusElement = this.canvas.getDocumentElement(selection.focusNode);
         

+        if(anchorElement instanceof documentElement.DocumentNodeElement || focusElement instanceof documentElement.DocumentNodeElement)
+            return {};
+

         if(which === 'anchor') {
             return {
                 element: anchorElement,
         if(which === 'anchor') {
             return {
                 element: anchorElement,

-                offset: selection.anchorOffset
+                offset: selection.anchorOffset,
+                offsetAtBeginning: selection.anchorOffset === 0,
+                offsetAtEnd: anchorElement && anchorElement.getText().length === selection.anchorOffset
+            };
+        }
+        if(which === 'focus') {
+            return {
+                element: focusElement,
+                offset: selection.focusOffset,
+                offsetAtBeginning: selection.focusOffset === 0,
+                offsetAtEnd: focusElement && focusElement.getText().length === selection.focusOffset

             };
         }
         
             };
         }
         


@@ -330,7 +488,7 @@ $.extend(Cursor.prototype, {
                 }
             }
         } else {
                 }
             }
         } else {

-            // TODO: Handle order
+            // TODO: Handle order via https://developer.mozilla.org/en-US/docs/Web/API/Node.compareDocumentPosition

             if(which === 'start') {
                 element = anchorElement;
                 offset = selection.anchorOffset
             if(which === 'start') {
                 element = anchorElement;
                 offset = selection.anchorOffset


@@ -342,14 +500,16 @@ $.extend(Cursor.prototype, {
 
         return {
             element: element,
 
         return {
             element: element,

-            offset: offset
+            offset: offset,
+            offsetAtBeginning: offset === 0,
+            offsetAtEnd: element.getText().length === offset

         }
     }
 })
 
 return {
         }
     }
 })
 
 return {

-    fromXML: function(xml) {
-        return new Canvas(xml);
+    fromXML: function(xml, publisher) {
+        return new Canvas(xml, publisher);

     }
 };
 
     }
 };