splitting blocks from spans

[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 71a50b0..bd66c6e 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/keyboard.js
+++ b/src/editor/modules/documentCanvas/canvas/keyboard.js
@@ -1,7 +1,8 @@
 define([
 define([

+'libs/jquery',

 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/utils'
 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/utils'

-], function(documentElement, utils) {
+], function($, documentElement, utils) {

     
 'use strict';
 /* globals gettext */
     
 'use strict';
 /* globals gettext */


@@ -36,6 +37,55 @@ var handles = function(handler, event) {
     return false;
 };
 
     return false;
 };
 

+
+var scroll = function(place, textElement) {
+    var rect = textElement.getBoundingClientRect(),
+        scroll = $('#rng-module-documentCanvas-contentWrapper'),
+        border = rect.bottom - (place === 'top' ? rect.height : 0) - scroll.offset().top + scroll[0].scrollTop,
+        visible = scroll[0].scrollTop + {top: 0, bottom: scroll.height()}[place],
+        padding = 16,
+        toScroll = 0;
+    
+    if(place === 'top' && (border - padding < visible)) {
+        toScroll =  border - visible - padding;
+    } else if(place === 'bottom' && (border + padding > visible))  {
+        toScroll = border - visible + padding;
+    }
+    if(toScroll) {
+        scroll[0].scrollTop = scroll[0].scrollTop + toScroll;
+    }
+    return toScroll;
+};
+
+var getLastRectAbove = function(node, y) {
+    var rects = node.getClientRects(),
+        idx = 0,
+        rect, toret;
+    while((rect = rects[idx])) {
+        if(rect.bottom < y) {
+            toret = rect;
+        } else {
+            break;
+        }
+        idx++;
+    }
+    return toret;
+};
+
+var getFirstRectBelow = function(node, y) {
+    var rects = node.getClientRects(),
+        idx = 0,
+        rect, toret;
+    while((rect = rects[idx])) {
+        if(rect.top > y) {
+            toret = rect;
+            break;
+        }
+        idx++;
+    }
+    return toret;
+};
+

 var handlers = [];
 
 
 var handlers = [];
 
 


@@ -52,7 +102,7 @@ handlers.push({key: KEYS.ENTER,
                 canvas.wlxmlDocument.transaction(function() {
                     var added = currentElement.wlxmlNode.after({
                         tagName: currentElement.wlxmlNode.getTagName() || 'div',
                 canvas.wlxmlDocument.transaction(function() {
                     var added = currentElement.wlxmlNode.after({
                         tagName: currentElement.wlxmlNode.getTagName() || 'div',

-                        attrs: {'class': currentElement.getWlxmlClass() || 'p'}
+                        attrs: {'class': currentElement.wlxmlNode.getClass() || 'p'}

                     });
                     added.append({text:''});
                     return added;
                     });
                     added.append({text:''});
                     return added;


@@ -77,7 +127,7 @@ handlers.push({key: KEYS.ENTER,
 
                 canvas.wlxmlDocument.transaction(function() {
                     var added = element.wlxmlNode.after(
 
                 canvas.wlxmlDocument.transaction(function() {
                     var added = element.wlxmlNode.after(

-                        {tagName: element.wlxmlNode.getTagName() || 'div', attrs: {'class': element.getWlxmlClass() || 'p'}}
+                        {tagName: element.wlxmlNode.getTagName() || 'div', attrs: {'class': element.wlxmlNode.getClass() || 'p'}}

                     );
                     added.append({text: ''});
                     return added;
                     );
                     added.append({text: ''});
                     return added;


@@ -96,24 +146,6 @@ handlers.push({key: KEYS.ENTER,
                     return false; // top level element is unsplittable
                 }
 
                     return false; // top level element is unsplittable
                 }
 

-                //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 = nodes.first;
-                // else if(position.offsetAtEnd)
-                //     newEmpty = nodes.second;
-                
-                // if(newEmpty) {
-                //     //goto = newEmpty.append({text: ''});
-                //     gotoOptions = {};
-                // } else {
-                //     goto = nodes.second;
-                //     gotoOptions = {caretTo: 'start'};
-                // }

                 var node = position.element.wlxmlNode,
                     result, goto, gotoOptions;
 
                 var node = position.element.wlxmlNode,
                     result, goto, gotoOptions;
 


@@ -139,51 +171,106 @@ handlers.push({key: KEYS.ENTER,
     }
 });
 
     }
 });
 

-handlers.push({keys: [KEYS.ARROW_UP, KEYS.ARROW_DOWN, KEYS.ARROW_LEFT, KEYS.ARROW_RIGHT],
+handlers.push({keys: [KEYS.ARROW_UP],

     keydown: function(event, canvas) {
     keydown: function(event, canvas) {

-        var position = canvas.getCursor().getPosition(),
-            element = position.element;
-        if(element && (element instanceof documentElement.DocumentTextElement) && element.isEmpty()) {
-            var direction, caretTo;
-            if(event.which === KEYS.ARROW_LEFT  || event.which === KEYS.ARROW_UP) {
-                direction = 'above';
-                caretTo = 'end';
-            } else {
-                direction = 'below';
-                caretTo = 'start';
-            }
-            var el = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom[0]));
-            if(el) {
-                canvas.setCurrentElement(el, {caretTo: caretTo});
+        /* globals window */
+        var element = canvas.getCursor().getPosition().element,
+            caretRect = window.getSelection().getRangeAt(0).getClientRects()[0],
+            frameRects = element.dom[0].getClientRects(),
+            caretTop = caretRect.bottom - caretRect.height,
+            position, target,rect, scrolled;
+
+        
+        if((frameRects[0].bottom === caretRect.bottom) || (caretRect.left < frameRects[0].left)) {
+            event.preventDefault();
+            canvas.rootWrapper.find('[document-text-element]').each(function() {
+                var test = getLastRectAbove(this, caretTop);
+                if(test) {
+                    target = this;
+                    rect = test;
+                } else {
+                    return false;
+                }
+            });
+            if(target) {
+                scrolled = scroll('top', target);
+                position = utils.caretPositionFromPoint(caretRect.left, rect.bottom - 1 - scrolled);
+                canvas.setCurrentElement(canvas.getDocumentElement(position.textNode), {caretTo: position.offset});

             }
         }
             }
         }

-    },
-    keyup: function(event, canvas) {
+    }
+});
+
+handlers.push({keys: [KEYS.ARROW_DOWN],
+    keydown: function(event, canvas) {
+        /* globals window */

         var element = canvas.getCursor().getPosition().element,
         var element = canvas.getCursor().getPosition().element,

-            caretTo = false;
-        if(!element) {
-            // Chrome hack
+            caretRect = window.getSelection().getRangeAt(0).getClientRects()[0],
+            frameRects = element.dom[0].getClientRects(),
+            lastRect = frameRects[frameRects.length-1],
+            position, target,rect, scrolled;

 
 

-            var moves = [{direction: 'above', caretTo: 'end'}, {direction: 'below', caretTo: 'start'}];
-            if(event.which === KEYS.ARROW_RIGHT  || event.which === KEYS.ARROW_DOWN) {
-                moves.reverse();
-            }
-            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(lastRect.bottom === caretRect.bottom || (caretRect.left > lastRect.left + lastRect.width)) {
+            event.preventDefault();
+            canvas.rootWrapper.find('[document-text-element]').each(function() {
+                var test = getFirstRectBelow(this, caretRect.bottom);
+                if(test) {
+                    target = this;
+                    rect = test;
+                    return false;

                 }
             });
                 }
             });

+            if(target) {
+                scrolled = scroll('bottom', target);
+                position = utils.caretPositionFromPoint(caretRect.left, rect.top +1 - scrolled);
+                canvas.setCurrentElement(canvas.getDocumentElement(position.textNode), {caretTo: position.offset});
+            }

         }
         }

-        if(element) {
-            canvas.setCurrentElement(element, {caretTo: caretTo});
+    }
+});
+
+handlers.push({keys: [KEYS.ARROW_LEFT],
+    keydown: function(event, canvas) {
+        /* globals window */
+        var position = canvas.getCursor().getPosition(),
+            element = position.element,
+            prev;
+
+        if(position.offset === 0) {
+            event.preventDefault();
+            prev = canvas.getPreviousTextElement(element);
+            if(prev) {
+                scroll('top', prev.dom[0]);
+                canvas.setCurrentElement(canvas.getDocumentElement(prev.dom.contents()[0]), {caretTo: 'end'});
+            }

         }
     }
 });
 
         }
     }
 });
 

+handlers.push({keys: [KEYS.ARROW_RIGHT],
+    keydown: function(event, canvas) {
+        /* globals window */
+        var position = canvas.getCursor().getPosition(),
+            element = position.element,
+            next;
+        if(position.offsetAtEnd) {
+            event.preventDefault();
+            next = canvas.getNextTextElement(element);
+            if(next) {
+                scroll('bottom', next.dom[0]);
+                canvas.setCurrentElement(canvas.getDocumentElement(next.dom.contents()[0]), {caretTo: 0});
+            }
+        } else {
+            var secondToLast = (position.offset === element.wlxmlNode.getText().length -1);
+            if(secondToLast) {
+                // Only Flying Spaghetti Monster knows why this is need for FF (for versions at least 26 to 31)
+                event.preventDefault();
+                canvas.setCurrentElement(element, {caretTo: 'end'});
+            }
+        }
+
+    }
+});

 
 var selectsWholeTextElement = function(cursor) {
     if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd) {
 
 var selectsWholeTextElement = function(cursor) {
     if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd) {


@@ -219,7 +306,7 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
             caretTo = 'start';
         }
 
             caretTo = 'start';
         }
 

-        if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) {
+        if(cursor.isSelecting()) {

             event.preventDefault();
             var start = cursor.getSelectionStart(),
                 end = cursor.getSelectionEnd();
             event.preventDefault();
             var start = cursor.getSelectionStart(),
                 end = cursor.getSelectionEnd();


@@ -272,32 +359,12 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
                 event.preventDefault();
                 node.setText('');
             }
                 event.preventDefault();
                 node.setText('');
             }

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

             else if(cursorAtOperationEdge) {
                 if(direction === 'below') {
                     element = canvas.getNearestTextElement(direction, element);
                 }
             else if(cursorAtOperationEdge) {
                 if(direction === 'below') {
                     element = canvas.getNearestTextElement(direction, element);
                 }

-                if(element) {
-                    goto = element.wlxmlNode.mergeContentUp();
+                if(element && element.wlxmlNode.getIndex() === 0) {
+                    goto = element.wlxmlNode.parent().moveUp();

                     if(goto) {
                         canvas.setCurrentElement(goto.node, {caretTo: goto.offset});
                     }
                     if(goto) {
                         canvas.setCurrentElement(goto.node, {caretTo: goto.offset});
                     }


@@ -312,8 +379,166 @@ handlers.push({keys: [KEYS.BACKSPACE, KEYS.DELETE],
     }
 });
 
     }
 });
 

+var handleKeyEvent = function(e, s) {
+    keyEventHandlers.some(function(handler) {
+        if(handler.applies(e, s)) {
+            handler.run(e, s);
+            return true;
+        }
+    });
+};
+// todo: whileRemoveWholetext
+var keyEventHandlers = [
+    {
+        applies: function(e, s) {
+            return s.type === 'caret' && (
+                (s.isAtBeginning() && e.key === KEYS.BACKSPACE) ||
+                (s.isAtEnd() && e.key === KEYS.DELETE)
+            );
+        },
+        run: function(e,s) {
+            var direction, caretTo, cursorAtOperationEdge, goto, element;
+
+            if(e.key === KEYS.BACKSPACE) {
+                direction = 'above';
+                caretTo = 'end';
+                cursorAtOperationEdge = s.isAtBeginning();
+                element = s.element;
+            }
+            else {
+                direction = 'below';
+                caretTo = 'start';
+                cursorAtOperationEdge = s.isAtEnd();
+                element = cursorAtOperationEdge && s.canvas.getNearestTextElement(direction, s.element);
+            }
+
+            if(!cursorAtOperationEdge || !element) {
+                return;
+            }
+
+            e.preventDefault();
+
+            s.canvas.wlxmlDocument.transaction(function() {
+                if(element.wlxmlNode.getIndex() === 0) {
+                    goto = element.wlxmlNode.parent().moveUp();
+                    if(goto) {
+                        s.canvas.setCurrentElement(goto.node, {caretTo: goto.offset});
+                    }
+                }
+            }, {
+                metadata: {
+                    description: gettext('Remove text')
+                }
+            });
+        }
+    },
+
+    {
+        applies: function(e,s) {
+            return s.type === 'caret' && s.element.getText().length === 1 && (e.key === KEYS.BACKSPACE || e.key === KEYS.DELETE);
+        },
+        run: function(e,s) {
+            e.preventDefault();
+            e.element.wlxmlNode.setText('');
+            s.canvas.setCurrentElement(s.element, {caretTo: 0});
+        }
+    },
+
+    {
+        applies: function(e, s) {
+            return s.type === 'textSelection' && (e.key === KEYS.BACKSPACE || e.key === KEYS.DELETE);
+        },
+        run: function(e, s) {
+            var direction = 'above',
+                caretTo = 'end',
+                goto;
+
+            if(e.key === KEYS.DELETE) {
+                direction = 'below';
+                caretTo = 'start';
+            }
+
+            e.preventDefault();
+
+            if(s.startsAtBeginning && s.endsAtEnd && s.startElement.sameNode(s.endElement)) {
+                goto = s.startElement;
+                caretTo = s.startOffset;
+            } else if(direction === 'above') {
+                if(s.startsAtBeginning()) {
+                    goto = s.canvas.getNearestTextElement('above', s.startElement);
+                    caretTo = 'end';
+                } else {
+                    goto = s.startElement;
+                    caretTo = s.startOffset;
+                }
+            } else {
+                if(s.endsAtEnd()) {
+                    goto = s.canvas.getNearestTextElement('below', s.startElement);
+                    caretTo = 'start';
+                } else {
+                    goto = s.endElement;
+                    caretTo = 0;
+                }
+            }
+
+            var doc = s.canvas.wlxmlDocument;
+            doc.transaction(function() {
+                
+                doc.deleteText({
+                    from: {
+                        node: s.startElement.wlxmlNode,
+                        offset: s.startOffset
+                    },
+                    to: {
+                        node: s.endElement.wlxmlNode,
+                        offset: s.endOffset
+                    }
+                });
+
+            }, {
+                success: function() {
+                    if(goto) {
+                        s.canvas.setCurrentElement(goto, {caretTo: caretTo});
+                    }
+                }
+            });
+
+        }
+    },
+    {
+        applies: function(e, s) {
+            return s.type === 'caret' && e.key === KEYS.ENTER && !s.element.parent().isRootElement();
+        },
+        run: function(e, s) {
+            var result, goto, gotoOptions;
+            void(e);
+            e.preventDefault();
+            s.canvas.wlxmlDocument.transaction(function() {
+                result = s.element.wlxmlNode.breakContent({offset: s.offset});
+            }, {
+                metadata: {
+                    description: gettext('Splitting text'),
+                    fragment: s.toDocumentFragment()
+                }
+            });
+
+            if(result.emptyText) {
+                goto = result.emptyText;
+                gotoOptions = {};
+            } else {
+                goto = result.second;
+                gotoOptions = {caretTo: 'start'};
+            }
+
+            s.canvas.setCurrentElement(utils.getElementForNode(goto), gotoOptions);
+        }
+    }
+];
+

 return {
 return {

-    handleKey: handleKey
+    handleKey: handleKey,
+    handleKeyEvent: handleKeyEvent,
+    KEYS: KEYS

 };
 
 });
\ No newline at end of file
 };
 
 });
\ No newline at end of file