list fixes: headers, invalid elements, easier ending
[fnpeditor.git] / src / editor / plugins / core / core.js
index 935b6d4..c56c5db 100644 (file)
@@ -8,28 +8,123 @@ var _ = require('libs/underscore'),
     footnote = require('plugins/core/footnote'),
     switchTo = require('plugins/core/switch'),
     lists = require('plugins/core/lists'),
-    plugin = {name: 'core', actions: [], canvas: {}, documentExtension: {textNode: {}}},
+    plugin = {name: 'core', actions: [], canvas: {}, documentExtension: {textNode: {}, documentNode: {}}},
     Dialog = require('views/dialog/dialog'),
-    canvasElements = require('plugins/core/canvasElements');
-
-
+    canvasElements = require('plugins/core/canvasElements'),
+    metadataEditor = require('plugins/core/metadataEditor/metadataEditor'),
+    edumed = require('plugins/core/edumed/edumed'),
+    attachments = require('views/attachments/attachments');
+
+
+
+
+var exerciseFix = function(newNodes) {
+    var list, exercise, max, addedItem, answerValues;
+    if(newNodes.created.is('item')) {
+        list = newNodes.created.parent();
+        exercise = list.parent();
+        if(exercise && exercise.is('exercise')) {
+            if(exercise.is('exercise.order')) {
+                answerValues = exercise.object.getItems()
+                            .map(function(item) {
+                                if(!addedItem && item.node.sameNode(newNodes.created)) {
+                                    addedItem = item;
+                                }
+                                return item.getAnswer();
+                            });
+                max = Math.max.apply(Math.max, answerValues);
+                addedItem.setAnswer(max + 1);
+            }
+        }
+    }
+};
 
 plugin.documentExtension.textNode.transformations = {
     breakContent: {
         impl: function(args) {
             var node = this,
+                isSpan = node.parent().getTagName() === 'span',
+                parentDescribingNodes = [],
                 newNodes, emptyText;
             newNodes = node.split({offset: args.offset});
+            newNodes.second.contents()
+                .filter(function(child) {
+                    return child.object.describesParent;
+                })
+                .forEach(function(child) {
+                    //child.detach();
+                    parentDescribingNodes.push(child);
+                    child.detach();
+                });
             [newNodes.first, newNodes.second].some(function(newNode) {
                 if(!(newNode.contents().length)) {
                     emptyText = newNode.append({text: ''});
                     return true; // break
                 }
             });
+
+            /* <hack>
+            /*
+                This makes sure that adding a new item to the list in some of the edumed exercises
+                sets an answer attribute that makes sense (and not just copies it which would create
+                a duplicate value).
+
+                This won't be neccessary when/if we introduce canvas element own key event handlers.
+
+                Alternatively, WLXML elements could implement their own item split methods that we
+                would delegate to.
+            */
+                exerciseFix(newNodes);
+            /* </hack> */
+
+            parentDescribingNodes.forEach(function(node) {
+                newNodes.first.append(node);
+            });
+
+            var parent, newNode;
+
+            var copyNode = function(n) {
+                var attrs = {};
+                n.getAttrs().forEach(function(attr) {
+                    attrs[attr.name] = attr.value;
+                });
+
+                return node.document.createDocumentNode({
+                    tagName: n.getTagName(),
+                    attrs: attrs
+                });
+            };
+
+            var move = function(node, to) {
+                var copy;
+                if(!node.containsNode(newNodes.second)) {
+                    to.append(node);
+                    return false;
+                } else {
+                    if(!node.sameNode(newNodes.second)) {
+                        copy = to.append(copyNode(node));
+                        node.contents().some(function(n) {
+                            return move(n, copy);
+                        });
+                    }
+                    return true;
+                }
+            };
+
+            if(isSpan) {
+                newNodes.first.parents().some(function(p) {
+                    if(p.getTagName() !== 'span') {
+                        parent = p;
+                        return true;
+                    }
+                });
+                newNode = parent.before({tagName: parent.getTagName(), attrs: {'class': parent.getClass()}});
+                parent.contents().some(function(n) {
+                    return move(n, newNode);
+                });
+            }
+
             return _.extend(newNodes, {emptyText: emptyText});
-        },
-        getChangeRoot: function() {
-            return this.context.parent().parent();
         }
     },
     mergeContentUp: function() {
@@ -68,6 +163,170 @@ plugin.documentExtension.textNode.transformations = {
     }
 };
 
+plugin.documentExtension.documentNode.transformations = {
+    moveUp: function() {
+        var toMerge = this,
+            prev = toMerge.prev();
+
+        var merge = function(from, to) {
+            var toret;
+            from.contents().forEach(function(node, idx) {
+                var len, ret;
+                if(idx === 0 && node.nodeType === Node.TEXT_NODE) {
+                    len = node.getText().length;
+                }
+                ret = to.append(node);
+                
+                if(idx === 0 && ret.nodeType === Node.TEXT_NODE) {
+                    toret = {
+                        node: ret,
+                        offset: ret.getText().length - len
+                    };
+                } else if(!toret) {
+                    toret = {
+                        node: ret.getFirstTextNode(),
+                        offset: 0
+                    };
+                }
+            });
+            from.detach();
+            return toret;
+        };
+
+        var strategies = [
+            {
+                applies: function() {
+                    return toMerge.nodeType === Node.TEXT_NODE && prev.is({tagName: 'span'});
+                },
+                run: function() {
+                    var textNode = prev.getLastTextNode(),
+                        txt, prevText, prevTextLen;
+                    if(textNode) {
+                        txt = textNode.getText();
+                        if(txt.length > 1) {
+                            textNode.setText(txt.substr(0, txt.length-1));
+                            return {node: toMerge, offset: 0};
+                        } else {
+                            if((prevText = prev.prev()) && prevText.nodeType === Node.TEXT_NODE) {
+                                prevTextLen = prevText.getText().length;
+                            }
+                            prev.detach();
+                            return {
+                                node: prevText ? prevText : toMerge,
+                                offset : prevText ? prevTextLen : 0
+                            };
+                        }
+                    }
+                }
+            },
+            {
+                applies: function() {
+                    return toMerge.is({tagName: 'div', 'klass': 'p'}) || (toMerge.is({tagName: 'div'}) && toMerge.getClass() === '');
+                },
+                run: function() {
+                    if(prev && (prev.is('p') || prev.is({tagName: 'header'}))) {
+                        return merge(toMerge, prev);
+                    }
+                    if(prev && prev.is('list')) {
+                        var items = prev.contents().filter(function(n) { return n.is('item');});
+                        return merge(toMerge, items[items.length-1]);
+                    }
+                }
+            },
+            {
+                applies: function() {
+                    return toMerge.is({tagName: 'span'});
+                },
+                run: function() {
+                    /* globals Node */
+                    var toret = {node: toMerge.contents()[0] , offset: 0},
+                        txt, txtNode, parent;
+                    if(!prev) {
+                        toMerge.parents().some(function(p) {
+                            if(p.is({tagName: 'span'})) {
+                                parent = prev = p;
+                            } else {
+                                if(!parent) {
+                                    parent = p;
+                                }
+                                prev = prev && prev.prev();
+                                return true;
+                            }
+                        });
+                    }
+                    if(!prev) {
+                        return parent.moveUp();
+                    }
+                    else if(prev.nodeType === Node.TEXT_NODE && (txt = prev.getText())) {
+                        prev.setText(txt.substr(0, txt.length-1));
+                        return toret;
+                    } else if(prev.is({tagName: 'span'})) {
+                        if((txtNode = prev.getLastTextNode())) {
+                            txt = txtNode.getText();
+                            if(txt.length > 1) {
+                                txtNode.setText(txt.substr(0, txt.length-1));
+                            } else {
+                                if(txtNode.parent().contents().length === 1) {
+                                    txtNode.parent().detach();
+                                } else {
+                                    txtNode.detach();
+                                }
+
+                            }
+                            return toret;
+                        }
+                    }
+
+                }
+            },
+            {
+                applies: function() {
+                    return toMerge.is({tagName: 'header'});
+                },
+                run: function() {
+                    if(prev && prev.is('p') || prev.is({tagName: 'header'})) {
+                        return merge(toMerge, prev);
+                    }
+                }
+            },
+            {
+                applies: function() {
+                    return toMerge.is('item');
+                },
+                run: function() {
+                    var list;
+                    if(prev && prev.is('item')) {
+                        return merge(toMerge, prev);
+                    } else if(!prev && (list = toMerge.parent()) && list.is('list')) {
+                        list.before(toMerge);
+                        toMerge.setClass('p');
+                        if(!list.contents().length) {
+                            list.detach();
+                        }
+                        return {node: toMerge.contents()[0], offset:0};
+                    }
+                }
+            }
+        ];
+
+        var toret;
+        strategies.some(function(strategy) {
+            if(strategy.applies()) {
+                toret = strategy.run();
+                return true;
+            }
+        });
+        return toret;
+    },
+    insertNewNode: function () {
+        var node = this;
+        var newElement = this.document.createDocumentNode({tagName: 'div', attrs: {class: 'p'}});
+        node.after(newElement);
+        newElement.append({text: ''});
+        return newElement;
+    }
+};
+
 var undoRedoAction = function(dir) {
     return {
         name: dir,
@@ -79,7 +338,17 @@ var undoRedoAction = function(dir) {
             icon: 'share-alt',
             iconStyle: dir === 'undo' ? '-webkit-transform: scale(-1,1); transform: scale(-1, 1)' : '',
             execute: function(callback, params) {
+                var metadata = _.last(params.document[dir+'Stack']).metadata,
+                    fragment = metadata && metadata.fragment;
                 params.document[dir]();
+                if(fragment) {
+                    if(!fragment.isValid()) {
+                        fragment.restoreFromPaths();
+                    }
+                    if(fragment.isValid()) {
+                        callback(fragment);
+                    }
+                }
                 callback();
             },
         },
@@ -210,7 +479,8 @@ var createWrapTextAction = function(createParams) {
                             return newFragment;
                         }, {
                             metadata: {
-                                description: createParams.unwrapDescription
+                                description: createParams.unwrapDescription,
+                                fragment: params.fragment
                             },
                             success: callback
                         });
@@ -246,7 +516,8 @@ var createWrapTextAction = function(createParams) {
                             }
                         }, {
                             metadata: {
-                                description: createParams.wrapDescription
+                                description: createParams.wrapDescription,
+                                fragment: params.fragment
                             },
                             success: callback
                         });
@@ -259,6 +530,7 @@ var createWrapTextAction = function(createParams) {
 };
 
 
+
 var createLinkFromSelection = function(callback, params) {
     var doc = params.fragment.document,
         dialog = Dialog.create({
@@ -269,7 +541,8 @@ var createLinkFromSelection = function(callback, params) {
                 {label: gettext('Link'), name: 'href', type: 'input',
                 prePasteHandler: function(text) {
                                     return params.fragment.document.getLinkForUrl(text);
-                                }.bind(this)
+                                }.bind(this),
+                description: '<a href="#-" class="attachment-library">' + gettext('attachment library') + '</a>'
                 }
             ]
         }),
@@ -288,12 +561,16 @@ var createLinkFromSelection = function(callback, params) {
             return doc.createFragment(doc.CaretFragment, {node: span.contents()[0], offset:0});
         }, {
             metadata: {
-                description: action.getState().description
+                description: action.getState().description,
+                fragment: params.fragment
             },
             success: callback
         });
     });
     dialog.show();
+    $(".attachment-library", dialog.$el).on('click', function() {
+        attachments.select(function(v) {$("input", dialog.$el).val(v);});
+    });
 };
 
 var editLink = function(callback, params) {
@@ -316,7 +593,8 @@ var editLink = function(callback, params) {
             return params.fragment;
         }, {
             metadata: {
-                description: action.getState().description
+                description: action.getState().description,
+                fragment: params.fragment
             },
             success: callback
         });
@@ -363,23 +641,34 @@ var linkAction = {
 };
 
 
+var metadataParams = {};
+
 plugin.actions = [
     undoRedoAction('undo'),
     undoRedoAction('redo'),
     commentAction,
     createWrapTextAction({name: 'emphasis', klass: 'emp', wrapDescription: gettext('Mark as emphasized'), unwrapDescription: gettext('Remove emphasis')}),
     createWrapTextAction({name: 'cite', klass: 'cite', wrapDescription: gettext('Mark as citation'), unwrapDescription: gettext('Remove citation')}),
-    linkAction
-].concat(plugin.actions, templates.actions, footnote.actions, switchTo.actions, lists.actions);
-
+    linkAction,
+    metadataEditor.action(metadataParams)
+].concat(plugin.actions, templates.actions, footnote.actions, switchTo.actions, lists.actions, edumed.actions);
 
 
 plugin.config = function(config) {
     // templates.actions[0].config(config.templates);
     templates.actions[0].params.template.options = config.templates;
+    metadataParams.config = (config.metadata || []).sort(function(configRow1, configRow2) {
+        if(configRow1.key < configRow2.key) {
+            return -1;
+        }
+        if(configRow1.key > configRow2.key) {
+            return 1;
+        }
+        return 0;
+    });
 };
 
-plugin.canvasElements = canvasElements;
+plugin.canvasElements = canvasElements.concat(edumed.canvasElements);
 
 return plugin;