wlxml: methods for testing for existence and fetching ancestors with a specific class

[fnpeditor.git] / src / editor / modules / documentCanvas / canvas / keyboard.js

diff --git a/src/editor/modules/documentCanvas/canvas/keyboard.js b/src/editor/modules/documentCanvas/canvas/keyboard.js
index a6f52cf..f879851 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/keyboard.js
+++ b/src/editor/modules/documentCanvas/canvas/keyboard.js
@@ -27,10 +27,12 @@ var handleKey = function(event, canvas) {
 };
 
 var handles = function(handler, event) {
 };
 
 var handles = function(handler, event) {

-    if(handler.key === event.which)
+    if(handler.key === event.which) {

         return true;
         return true;

-    if(handler.keys && handler.keys.indexOf(event.which) !== -1)
+    }
+    if(handler.keys && handler.keys.indexOf(event.which) !== -1) {

         return true;
         return true;

+    }

     return false;
 };
 
     return false;
 };
 


@@ -42,13 +44,37 @@ handlers.push({key: KEYS.ENTER,
         event.preventDefault();
         var cursor = canvas.getCursor(),
             position = cursor.getPosition(),
         event.preventDefault();
         var cursor = canvas.getCursor(),
             position = cursor.getPosition(),

-            element = position.element;
+            element = position.element,
+            added;
+
+        if(Object.keys(cursor.getPosition()).length === 0) {
+            var currentElement = canvas.getCurrentNodeElement();
+            if(currentElement) {
+                canvas.wlxmlDocument.startTransaction();
+                added = currentElement.wlxmlNode.after({
+                    tagName: currentElement.getWlxmlTag() || 'div',
+                    attrs: {'class': currentElement.getWlxmlClass() || 'p'}
+                });
+                added.append({text:''});
+                canvas.wlxmlDocument.endTransaction();
+                canvas.setCurrentElement(utils.findCanvasElement(added), {caretTo: 'start'});
+            }
+            return;
+        }

 
         if(!cursor.isSelecting()) {
             if(event.ctrlKey) {
 
         if(!cursor.isSelecting()) {
             if(event.ctrlKey) {

-                var added = element.after({tag: element.getWlxmlTag() || 'div', klass: element.getWlxmlClass() || 'p'});
-                added.append({text:''});
-                canvas.setCurrentElement(added, {caretTo: 'start'});
+                if(element instanceof documentElement.DocumentTextElement) {
+                    element = element.parent();
+                }
+
+                canvas.wlxmlDocument.startTransaction();
+                added = element.wlxmlNode.after(
+                    {tagName: element.getWlxmlTag() || 'div', attrs: {'class': element.getWlxmlClass() || 'p'}}
+                );
+                added.append({text: ''});
+                canvas.wlxmlDocument.endTransaction();
+                canvas.setCurrentElement(utils.findCanvasElement(added), {caretTo: 'start'});

 
             } else {
 
 
             } else {
 


@@ -56,25 +82,36 @@ handlers.push({key: KEYS.ENTER,
                     return false; // top level element is unsplittable
                 }
 
                     return false; // top level element is unsplittable
                 }
 

-                var elements = position.element.split({offset: position.offset}),
-                    newEmpty,
-                    goto,
-                    gotoOptions;
+                //var nodes = position.element.data('wlxmlNode').split({offset: position.offset}),
+                // var nodes = position.element.data('wlxmlNode').transform('split', {offset: position.offset}),
+                //     newEmpty,
+                //     goto,
+                //     gotoOptions;

 
 

-                if(position.offsetAtBeginning)
-                    newEmpty = elements.first;
-                else if(position.offsetAtEnd)
-                    newEmpty = elements.second;
+                // if(position.offsetAtBeginning)
+                //     newEmpty = nodes.first;
+                // else if(position.offsetAtEnd)
+                //     newEmpty = nodes.second;

                 
                 

-                if(newEmpty) {
-                    goto = newEmpty.append(documentElement.DocumentTextElement.create({text: ''}, this));
+                // if(newEmpty) {
+                //     //goto = newEmpty.append({text: ''});
+                //     gotoOptions = {};
+                // } else {
+                //     goto = nodes.second;
+                //     gotoOptions = {caretTo: 'start'};
+                // }
+
+                var result = position.element.wlxmlNode.breakContent({offset: position.offset}),
+                    goto, gotoOptions;
+                if(result.emptyText) {
+                    goto = result.emptyText;

                     gotoOptions = {};
                 } else {
                     gotoOptions = {};
                 } else {

-                    goto = elements.second;
+                    goto = result.second;

                     gotoOptions = {caretTo: 'start'};
                 }
 
                     gotoOptions = {caretTo: 'start'};
                 }
 

-                canvas.setCurrentElement(goto, gotoOptions);
+                canvas.setCurrentElement(utils.findCanvasElement(goto), gotoOptions);

             }
         }
     }
             }
         }
     }


@@ -94,7 +131,9 @@ handlers.push({keys: [KEYS.ARROW_UP, KEYS.ARROW_DOWN, KEYS.ARROW_LEFT, KEYS.ARRO
                 caretTo = 'start';
             }
             var el = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0]));
                 caretTo = 'start';
             }
             var el = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0]));

-            canvas.setCurrentElement(el, {caretTo: caretTo});
+            if(el) {
+                canvas.setCurrentElement(el, {caretTo: caretTo});
+            }

         }
     },
     keyup: function(event, canvas) {
         }
     },
     keyup: function(event, canvas) {


@@ -102,31 +141,40 @@ handlers.push({keys: [KEYS.ARROW_UP, KEYS.ARROW_DOWN, KEYS.ARROW_LEFT, KEYS.ARRO
             caretTo = false;
         if(!element) {
             // Chrome hack
             caretTo = false;
         if(!element) {
             // Chrome hack

-            var direction;
-            if(event.which === KEYS.ARROW_LEFT  || event.which === KEYS.ARROW_UP) {
-                direction = 'above';
-                caretTo = 'end';
-            } else {
-                direction = 'below';
-                caretTo = 'start';
+
+            var moves = [{direction: 'above', caretTo: 'end'}, {direction: 'below', caretTo: 'start'}];
+            if(event.which === KEYS.ARROW_RIGHT  || event.which === KEYS.ARROW_DOWN) {
+                moves.reverse();

             }
             }

-            element = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]:visible', direction, window.getSelection().focusNode));
+            moves.some(function(move) {
+                /* globals window */
+                var targetNode = utils.nearestInDocumentOrder('[document-text-element]:visible', move.direction, window.getSelection().focusNode);
+                if(targetNode) {
+                    element = canvas.getDocumentElement(targetNode);
+                    caretTo = move.caretTo;
+                    return true; // break
+                }
+            });
+        }
+        if(element) {
+            canvas.setCurrentElement(element, {caretTo: caretTo});

         }
         }

-        canvas.setCurrentElement(element, {caretTo: caretTo});

     }
 });
 
 
 var selectsWholeTextElement = function(cursor) {
     }
 });
 
 
 var selectsWholeTextElement = function(cursor) {

-    if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd)
+    if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd) {

         return true;
         return true;

+    }

     return false;
     return false;

-}
+};

 
 handlers.push({key: KEYS.X,
     keydown: function(event, canvas) {
 
 handlers.push({key: KEYS.X,
     keydown: function(event, canvas) {

-        if(event.ctrlKey && selectsWholeTextElement(canvas.getCursor()))
+        if(event.ctrlKey && selectsWholeTextElement(canvas.getCursor())) {

             event.preventDefault();
             event.preventDefault();

+        }

     }
 });
 
     }
 });
 


@@ -134,10 +182,54 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
     keydown: function(event, canvas) {
         var cursor = canvas.getCursor(),
             position = canvas.getCursor().getPosition(),
     keydown: function(event, canvas) {
         var cursor = canvas.getCursor(),
             position = canvas.getCursor().getPosition(),

-            element = position.element;
+            element = position.element,
+            node = element.wlxmlNode,
+            direction = 'above',
+            caretTo = 'end',
+            goto;
+
+            
+        if(event.which === KEYS.DELETE) {
+            direction = 'below';
+            caretTo = 'start';
+        }

 
         if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) {
             event.preventDefault();
 
         if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) {
             event.preventDefault();

+            var start = cursor.getSelectionStart(),
+                end = cursor.getSelectionEnd();
+
+            if(direction === 'above') {
+                if(start.offsetAtBeginning) {
+                    goto = start.element.getNearestTextElement('above');
+                    caretTo = 'end';
+                } else {
+                    goto = start.element;
+                    caretTo = start.offset;
+                }
+            } else {
+                if(end.offsetAtEnd) {
+                    goto = start.element.getNearestTextElement('below');
+                    caretTo = 'start';
+                } else {
+                    goto = end.element;
+                    caretTo = 0;
+                }
+            }
+
+            canvas.wlxmlDocument.deleteText({
+                from: {
+                    node: start.element.wlxmlNode,
+                    offset: start.offset
+                },
+                to: {
+                    node: end.element.wlxmlNode,
+                    offset: end.offset
+                }
+            });
+            if(goto) {
+                canvas.setCurrentElement(goto, {caretTo: caretTo});
+            }

             return;
         }
             
             return;
         }
             


@@ -148,45 +240,44 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
 
         var willDeleteWholeText = function() {
             return element.getText().length === 1 || selectsWholeTextElement(cursor);
 
         var willDeleteWholeText = function() {
             return element.getText().length === 1 || selectsWholeTextElement(cursor);

-        }
+        };

 
 

-        if(willDeleteWholeText()) {
-            event.preventDefault();
-            element.setText('');
-        }
-        else if(element.isEmpty()) {
-
-            var direction = 'above',
-                caretTo = 'end';
-                
-            if(event.which === KEYS.DELETE) {
-                direction = 'below';
-                caretTo = 'start';
+        canvas.wlxmlDocument.transaction(function() {
+            if(willDeleteWholeText()) {
+                event.preventDefault();
+                node.setText('');

             }
             }

-
-            event.preventDefault();
-
-            var parent = element.parent(),
-                grandParent = parent ? parent.parent() : null,
-                goto;
-            if(parent.children().length === 1 && parent.children()[0].sameNode(element)) {
-                if(grandParent && grandParent.children().length === 1) {
-                    goto = grandParent.append({text: ''});
+            else if(element.isEmpty()) {
+                event.preventDefault();
+                var parent = element.parent(),
+                    grandParent = parent ? parent.parent() : null;
+                if(!grandParent && parent.children().length === 1) {
+                    return;
+                }
+                if(parent.children().length === 1 && parent.children()[0].sameNode(element)) {
+                    if(grandParent && grandParent.children().length === 1) {
+                        goto = grandParent.wlxmlNode.append({text: ''});
+                    } else {
+                        goto = element.getNearestTextElement(direction);
+                    }
+                    parent.wlxmlNode.detach();

                 } else {
                     goto = element.getNearestTextElement(direction);
                 } else {
                     goto = element.getNearestTextElement(direction);

+                    element.wlxmlNode.detach();

                 }
                 }

-                parent.detach();
-            } else {
-                goto = element.getNearestTextElement(direction);
-                element.detach();
+                canvas.setCurrentElement(goto, {caretTo: caretTo});

             }
             }

-            canvas.setCurrentElement(goto, {caretTo: caretTo});
-            canvas.publisher('contentChanged');
-        }
-        else if(cursorAtOperationEdge) {
-            // todo
-            event.preventDefault();
-        }
+            else if(cursorAtOperationEdge) {
+                if(direction === 'below') {
+                    element = element.getNearestTextElement(direction);
+                }
+                if(element) {
+                    goto = element.wlxmlNode.mergeContentUp();
+                    canvas.setCurrentElement(goto.node, {caretTo: goto.offset});
+                }
+                event.preventDefault();
+            }
+        });

     }
 });
 
     }
 });