Fixed josdejong#598: Search field can't be focused in object view

HISTORY.md

@@ -3,6 +3,13 @@
 https://github.com/josdejong/jsoneditor
 
 
+## not yet released, version 5.26.1
+
+- Fixed `.update()` throwing an exception when replacing a JSON object
+  with `null`. Thanks @DullReferenceException.
+- Fixed #598: Search field can't be focused in object view.
+
+
 ## 2018-11-12, version 5.26.0
 
 - Implemented option `mainMenuBar` to enable/disable the main menu bar.

src/js/treemode.js

@@ -1181,7 +1181,8 @@ treemode._onEvent = function (event) {
     }
   }
   else {
-    if (event.type === 'mousedown') {
+    // filter mouse events in the contents part of the editor (not the main menu)
+    if (event.type === 'mousedown' && util.hasParentNode(event.target, editor.content)) {
       this.deselect();
 
       if (node && event.target === node.dom.drag) {

src/js/util.js

@@ -580,6 +580,25 @@ exports.getInnerText = function getInnerText(element, buffer) {
   return '';
 };
 
+/**
+ * Test whether an element has the provided parent node somewhere up the node tree.
+ * @param {Element} elem
+ * @param {Element} parent
+ * @return {boolean}
+ */
+exports.hasParentNode = function (elem, parent) {
+  var e = elem ? elem.parentNode : undefined;
+
+  while (e) {
+    if (e === parent) {
+      return true;
+    }
+    e = e.parentNode;
+  }
+
+  return false;
+}
+
 /**
  * Returns the version of Internet Explorer or a -1
  * (indicating the use of another browser).