modules/documentCanvas/canvasManager.js

   1 define([\r
   2 'libs/jquery-1.9.1.min',\r
   3 './canvasNode'\r
   4 ], function($, canvasNode) {\r
   5 \r
   6 'use strict';\r
   7 \r
   8 var getCursorPosition = function() {\r
   9     var selection = window.getSelection();\r
  10     var anchorNode = $(selection.anchorNode);\r
  11     var parent = anchorNode.parent();\r
  12     return {\r
  13         textNode: anchorNode,\r
  14         textNodeOffset: selection.anchorOffset,\r
  15         textNodeIndex: parent.contents().index(anchorNode),\r
  16         parentNode: parent,\r
  17         focusNode: $(selection.focusNode).parent(),\r
  18         isAtEnd: selection.anchorOffset === anchorNode.text().length\r
  19     }\r
  20 };\r
  21 \r
  22 var Manager = function(canvas, sandbox) {\r
  23     this.canvas = canvas;\r
  24     this.sandbox = sandbox;\r
  25     this.shownAlready = false;\r
  26     this.gridToggled = false;\r
  27     this.scrollbarPosition = 0;\r
  28     this.currentNode = null;\r
  29     var manager = this;\r
  30         \r
  31     canvas.dom.find('#rng-module-documentCanvas-content').on('keyup', function() {\r
  32         manager.sandbox.publish('contentChanged');\r
  33     });\r
  34 \r
  35     canvas.dom.on('mouseover', '[wlxml-tag]', function(e) {\r
  36         e.stopPropagation();\r
  37         manager.sandbox.publish('nodeHovered', canvasNode.create($(e.target)));\r
  38     });\r
  39     canvas.dom.on('mouseout', '[wlxml-tag]', function(e) {\r
  40         e.stopPropagation();\r
  41         manager.sandbox.publish('nodeBlured', canvasNode.create($(e.target)));\r
  42     });\r
  43     canvas.dom.on('click', '[wlxml-tag]', function(e) {\r
  44         e.stopPropagation();\r
  45         console.log('clicked node type: '+e.target.nodeType);\r
  46         manager.selectNode(canvasNode.create($(e.target)));\r
  47     });\r
  48 \r
  49     canvas.dom.on('keyup', '#rng-module-documentCanvas-contentWrapper', function(e) {\r
  50         var anchor = $(window.getSelection().anchorNode);\r
  51         \r
  52         if(anchor[0].nodeType === Node.TEXT_NODE)\r
  53             anchor = anchor.parent();\r
  54         if(!anchor.is('[wlxml-tag]'))\r
  55             return;\r
  56         manager.selectNode(canvasNode.create(anchor));\r
  57     });\r
  58     \r
  59     canvas.dom.on('keydown', '#rng-module-documentCanvas-contentWrapper', function(e) {\r
  60         if(e.which === 13) { \r
  61             manager.onEnterKey(e);\r
  62         }\r
  63         if(e.which === 8) {\r
  64             manager.onBackspaceKey(e);\r
  65         }\r
  66     });\r
  67               \r
  68     canvas.dom.onShow = function() {\r
  69         if(!manager.shownAlready) {\r
  70             manager.shownAlready = true;\r
  71             manager.selectFirstNode();\r
  72         } else if(manager.currentNode) {\r
  73             manager.movecaretToNode(manager.getNodeElement(manager.currentNode));\r
  74             canvas.dom.find('#rng-module-documentCanvas-contentWrapper').scrollTop(manager.scrollbarPosition);\r
  75         }\r
  76     };\r
  77     canvas.dom.onHide = function() {\r
  78        manager.scrollbarPosition = canvas.dom.find('#rng-module-documentCanvas-contentWrapper').scrollTop();\r
  79     }\r
  80 };\r
  81     \r
  82 Manager.prototype.selectNode = function(cnode, options) {\r
  83     options = options || {};\r
  84     var nodeElement = this.getNodeElement(cnode)\r
  85     \r
  86     this.dimNode(cnode);\r
  87     \r
  88     this.canvas.dom.find('.rng-module-documentCanvas-currentNode').removeClass('rng-module-documentCanvas-currentNode');\r
  89     nodeElement.addClass('rng-module-documentCanvas-currentNode');\r
  90     \r
  91     if(options.movecaret) {\r
  92         this.movecaretToNode(nodeElement, options.movecaret);\r
  93     }\r
  94     \r
  95     this.currentNode = cnode;\r
  96     this.sandbox.publish('nodeSelected', cnode);\r
  97 };\r
  98 \r
  99 Manager.prototype.insertNewNode = function(wlxmlTag, wlxmlClass) {\r
 100     var selection = window.getSelection();\r
 101 \r
 102     if(selection.getRangeAt(0).collapsed) {\r
 103     \r
 104     } else {\r
 105         var textNodeIdx;\r
 106         var parent = $(selection.anchorNode).parent();\r
 107         var offsetStart = selection.anchorOffset;\r
 108         var offsetEnd = selection.focusOffset;\r
 109         \r
 110         if(selection.anchorNode === selection.focusNode) {\r
 111             if(offsetStart > offsetEnd) {\r
 112                 var tmp = offsetStart;\r
 113                 offsetStart = offsetEnd;\r
 114                 offsetEnd = tmp;\r
 115             }\r
 116             textNodeIdx = parent.contents().index($(selection.anchorNode));\r
 117         } else {\r
 118             if(parent.contents().index($(selection.anchorNode)) > parent.contents().index($(selection.focusNode))) {\r
 119                 offsetStart = selection.focusOffset;\r
 120                 offsetEnd = selection.anchorOffset;\r
 121             }\r
 122             textNodeIdx = [parent.contents().index($(selection.anchorNode)), parent.contents().index($(selection.focusNode))];\r
 123         }\r
 124         \r
 125         var wrapper = canvasNode.create({tag: wlxmlTag, klass: wlxmlClass});\r
 126         this.canvas.nodeWrap({inside: canvasNode.create(parent),\r
 127                               _with: wrapper,\r
 128                               offsetStart: offsetStart,\r
 129                               offsetEnd: offsetEnd,\r
 130                               textNodeIdx: textNodeIdx\r
 131                             });\r
 132         this.selectNode(wrapper, {movecaret: 'end'});\r
 133     }\r
 134     \r
 135     \r
 136 }\r
 137 \r
 138 Manager.prototype.getNodeElement = function(cnode) {\r
 139     return this.canvas.dom.find('#'+cnode.getId());\r
 140 };\r
 141 \r
 142 Manager.prototype.highlightNode = function(cnode) {\r
 143     var nodeElement = this.getNodeElement(cnode);\r
 144     if(!this.gridToggled) {\r
 145         nodeElement.addClass('rng-common-hoveredNode');\r
 146         var label = nodeElement.attr('wlxml-tag');\r
 147         if(nodeElement.attr('wlxml-class'))\r
 148             label += ' / ' + nodeElement.attr('wlxml-class');\r
 149         var tag = $('<div>').addClass('rng-module-documentCanvas-hoveredNodeTag').text(label);\r
 150         nodeElement.append(tag);\r
 151     }\r
 152 };\r
 153 \r
 154 Manager.prototype.dimNode = function(cnode) {\r
 155     var nodeElement = this.getNodeElement(cnode);\r
 156     if(!this.gridToggled) {\r
 157         nodeElement.removeClass('rng-common-hoveredNode');\r
 158         nodeElement.find('.rng-module-documentCanvas-hoveredNodeTag').remove();\r
 159     }\r
 160 };\r
 161 \r
 162 Manager.prototype.selectFirstNode = function() {\r
 163     var firstNodeWithText = this.canvas.dom.find('[wlxml-tag]').filter(function() {\r
 164         return $(this).clone().children().remove().end().text().trim() !== '';\r
 165     }).first();\r
 166     var node;\r
 167     if(firstNodeWithText.length)\r
 168         node = $(firstNodeWithText[0])\r
 169     else {\r
 170         node = this.canvas.dom.find('[wlxml-class|="p"]')\r
 171     }\r
 172     this.selectNode(canvasNode.create(node), {movecaret: true});\r
 173 };\r
 174 \r
 175 Manager.prototype.movecaretToNode = function(nodeElement, where) {\r
 176     if(!nodeElement.length)\r
 177         return;\r
 178     var range = document.createRange();\r
 179     range.selectNodeContents(nodeElement[0]);\r
 180     \r
 181     var collapseArg = true;\r
 182     if(where === 'end')\r
 183         collapseArg = false;\r
 184     range.collapse(collapseArg);\r
 185     var selection = document.getSelection();\r
 186     selection.removeAllRanges()\r
 187     selection.addRange(range);\r
 188 };\r
 189 \r
 190 Manager.prototype.toggleGrid =  function(toggle) {\r
 191     this.canvas.dom.find('[wlxml-tag]').toggleClass('rng-common-hoveredNode', toggle);\r
 192     this.gridToggled = toggle;\r
 193 };\r
 194 \r
 195 Manager.prototype.onEnterKey = function(e) {\r
 196     e.preventDefault();\r
 197     var pos = getCursorPosition();\r
 198     var contextNode = this.canvas.getNodeById(pos.parentNode.attr('id'));\r
 199     var newNode;\r
 200 \r
 201     if(pos.isAtEnd) {\r
 202         newNode = canvasNode.create({tag: pos.parentNode.attr('wlxml-tag'), klass: pos.parentNode.attr('wlxml-class')});\r
 203         this.canvas.nodeInsertAfter({node: newNode, after: this.canvas.getNodeById(pos.parentNode.attr('id'))});\r
 204     } else {\r
 205         newNode = this.canvas.nodeSplit({node: contextNode, textNodeIdx: pos.textNodeIndex, offset: pos.textNodeOffset});\r
 206     }\r
 207     if(newNode)\r
 208         this.selectNode(newNode, {movecaret: true});\r
 209     this.sandbox.publish('contentChanged');\r
 210 };\r
 211 \r
 212 Manager.prototype.onBackspaceKey = function(e) {\r
 213     var pos = getCursorPosition();\r
 214     var len = pos.textNode.text().length;\r
 215     if(len === 1) {\r
 216         // Prevent deleting node by browser after last character removed;\r
 217         e.preventDefault();\r
 218         pos.parentNode.text('');\r
 219     }\r
 220     if(len === 0) {\r
 221         e.preventDefault();\r
 222         var toRemove = canvasNode.create(pos.textNode);\r
 223         var prevNode = this.canvas.getPrecedingNode({node:toRemove});\r
 224         this.canvas.nodeRemove({node: toRemove}); // jesli nie ma tekstu, to anchor nie jest tex nodem\r
 225         this.selectNode(prevNode, {movecaret: 'end'});\r
 226     }\r
 227 }\r
 228 \r
 229 Manager.prototype.command = function(command, meta) {\r
 230     var pos = getCursorPosition();\r
 231     \r
 232     if(command === 'createList') {\r
 233         var node = canvasNode.create(pos.parentNode);\r
 234         if(window.getSelection().getRangeAt(0).collapsed && this.canvas.nodeInsideList({node: node})) {\r
 235             this.canvas.listRemove({pointer: node});\r
 236             this.selectNode(node, {movecaret: 'end'});\r
 237             this.sandbox.publish('contentChanged');\r
 238         }\r
 239         else {\r
 240             //if(!this.canvas.nodeInsideList({node: node})) {\r
 241                 this.canvas.listCreate({start: node, end: canvasNode.create(pos.focusNode), type: meta});\r
 242                 this.selectNode(node, {movecaret: 'end'});\r
 243                 this.sandbox.publish('contentChanged');\r
 244             //}\r
 245         }\r
 246     }\r
 247 \r
 248 }\r
 249 \r
 250 \r
 251 return Manager;\r
 252     \r
 253 });