refactoring: move getNearest/Next/PreviousTextElement out of DocumentElment

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

diff --git a/src/editor/modules/documentCanvas/canvas/utils.js b/src/editor/modules/documentCanvas/canvas/utils.js
index 9f5ee46..89ed192 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/utils.js
+++ b/src/editor/modules/documentCanvas/canvas/utils.js
@@ -3,7 +3,7 @@ define([
 ], function($) {
     
 'use strict';
-
+/* globals Node */
 
 var nearestInDocumentOrder = function(selector, direction, element) {
     var parents = $(element).parents(),
@@ -20,12 +20,12 @@ var nearestInDocumentOrder = function(selector, direction, element) {
     return null;
 };
 
-var findCanvasElement = function(node) {
+var findCanvasElement = function(node, childOf) {
     if(node.nodeType === Node.ELEMENT_NODE) {
         return node.getData('canvasElement');
     }
     if(node.nodeType === Node.TEXT_NODE) {
-        return findCanvasElementInParent(node, node.parent());
+        return findCanvasElementInParent(node, childOf || node.parent());
     }
 };
 
@@ -35,23 +35,53 @@ var findCanvasElement = function(node) {
  * and it lost reference to its parent (but we may still have it on canvas).
 */
 var findCanvasElementInParent = function(wlxmlChildNode, wlxmlParentNode) {
-    var parentElement = findCanvasElement(wlxmlParentNode),
-        toret;
-    parentElement.children().forEach(function(child) {
-        if(child.data('wlxmlNode').sameNode(wlxmlChildNode)) {
-            toret = child;
+    var parentElement, toret;
+
+    if(wlxmlParentNode === null) {
+        toret = wlxmlChildNode.getData('canvasElement');
+        if(toret.parent()) {
+            throw new Error('This should never happen: root canvas element doesn\'t render root document node!');
         }
-    });
+    } else {
+        parentElement = findCanvasElement(wlxmlParentNode);
+        parentElement.children().forEach(function(child) {
+            if(child.wlxmlNode.sameNode(wlxmlChildNode)) { // czemu tu, przy drugim undo child nie mial data?
+                toret = child;
+            }
+        });
+    }
     return toret;
 };
 
+var getElementForNode = function(node) {
+
+    var ptr = node.nodeType === Node.TEXT_NODE ? node.parent() : node;
+    while(!ptr.getData('canvasElement')) {
+        ptr = ptr.parent();
+    }
+    return ptr.getData('canvasElement');
+};
+
+var getElementForDetachedNode = function(node, originalParent) {
+    var ptr = originalParent;
+    if(ptr === null) {
+        return node.getData('canvasElement');
+    }
+    while(!ptr.getData('canvasElement')) {
+        ptr = ptr.parent();
+    }
+    return ptr.getData('canvasElement');
+};
+
 return {
     nearestInDocumentOrder: nearestInDocumentOrder,
     findCanvasElement: findCanvasElement,
     findCanvasElementInParent: findCanvasElementInParent,
     unicode: {
         ZWS: '\u200B'
-    }
+    },
+    getElementForNode: getElementForNode,
+    getElementForDetachedNode: getElementForDetachedNode
 };
 
 });