[MD Extensions] Move search field out of downloads, use it in extensions

ui/webui/resources/cr_elements/v1_0/cr_search_field/cr_search_field.js

Index: ui/webui/resources/cr_elements/v1_0/cr_search_field/cr_search_field.js
diff --git a/ui/webui/resources/cr_elements/v1_0/cr_search_field/cr_search_field.js b/ui/webui/resources/cr_elements/v1_0/cr_search_field/cr_search_field.js
new file mode 100644
index 0000000000000000000000000000000000000000..8f6fdf5bdecc57c24453e5e51ecac347940a5d76
--- /dev/null
+++ b/ui/webui/resources/cr_elements/v1_0/cr_search_field/cr_search_field.js
@@ -0,0 +1,58 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var SearchField = Polymer({
+  is: 'cr-search-field',
+
+  properties: {
+    showingSearch_: {
+      type: Boolean,
+      value: false,
+    },
+  },
+
+  setDelegate: function(delegate) {
+    this.delegate_ = delegate;
+  },
+
+  getValue: function() {
+    return this.$['search-input'].value;
+  },
+
+  /** @private */
+  onSearchTermSearch_: function() {
+    if (this.delegate_)
+      this.delegate_.onSearchTermSearch(this.$['search-input'].value);
+  },
+
+  /** @private */
+  onSearchTermKeydown_: function(e) {
+    assert(this.showingSearch_);
+    if (e.keyIdentifier == 'U+001B')  // Escape.
+      this.toggleShowingSearch_();
+  },
+
+  /** @private */
+  toggleShowingSearch_: function() {
+    this.showingSearch_ = !this.showingSearch_;
+    this.$['search-button'].disabled = this.showingSearch_;

[Dan Beam, 2015/09/14 23:16:06]

L39 could be done in the HTML if you want

[Devlin, 2015/09/15 17:24:06]

More consistent with the hiding code, so I like it.  Done.

+
+    if (this.showingSearch_) {
+      this.$['search-input'].focus();
+    } else {
+      this.$['search-input'].value = '';
+      this.onSearchTermSearch_();
+    }
+  },
+});
+
+/** @interface */
+SearchField.Delegate = function() {};
+
+SearchField.Delegate.prototype = {
+  /**
+   * @param {string} value
+   */
+  onSearchTermSearch: assertNotReached,
+};