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gaia/apps/email/js/cards/editor_mixins.js

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+'use strict';
+
+define(function(require) {
+
+  return {
+
+    _bindEditor: function(textNode) {
+      this._editorNode = textNode;
+
+      // Prevent pastes of rich HTML, since it has encoding, security and
+      // sanitation issues.
+      textNode.addEventListener('paste', function(event) {
+        event.preventDefault();
+        var text = event.clipboardData.getData('text/plain');
+
+        // Only insert if text. If no text, the execCommand fails with an
+        // error.
+        if (text) {
+          document.execCommand('insertText', false, text);
+        }
+      });
+    },
+
+    /**
+     * Inserts an email into the contenteditable element
+     */
+    populateEditor: function(value) {
+      var lines = value.split('\n');
+      var frag = document.createDocumentFragment();
+      for (var i = 0, len = lines.length; i < len; i++) {
+        if (i) {
+          frag.appendChild(document.createElement('br'));
+        }
+
+        if (lines[i]) {
+          frag.appendChild(document.createTextNode(lines[i]));
+        }
+      }
+
+      // Need at least one text node for tapping and keyboard display to work.
+      if (!frag.childNodes.length) {
+        frag.appendChild(document.createTextNode(''));
+      }
+
+      this._editorNode.appendChild(frag);
+    },
+
+    /**
+     * Gets the raw value from a contenteditable div
+     */
+    fromEditor: function(value) {
+      var content = '';
+      var len = this._editorNode.childNodes.length;
+      for (var i = 0; i < len; i++) {
+        var node = this._editorNode.childNodes[i];
+        if (node.nodeName === 'BR' &&
+            // Gecko's contenteditable implementation likes to create a
+            // synthetic trailing BR with type="_moz".  We do not like/need
+            // this synthetic BR, so we filter it out.  Check out
+            // nsTextEditRules::CreateTrailingBRIfNeeded to find out where it
+            // comes from.
+            node.getAttribute('type') !== '_moz') {
+          content += '\n';
+        } else {
+          content += node.textContent;
+        }
+      }
+
+      return content;
+    }
+
+  };
+
+
+});