DevTools: Create extensible QuickOpen control

third_party/WebKit/Source/devtools/front_end/quick_open/FilteredListWidget.js

Index: third_party/WebKit/Source/devtools/front_end/quick_open/FilteredListWidget.js
diff --git a/third_party/WebKit/Source/devtools/front_end/quick_open/FilteredListWidget.js b/third_party/WebKit/Source/devtools/front_end/quick_open/FilteredListWidget.js
index d1f59e3de5d1300df550afe3a9e11dd09f17877f..d46aa33c16537de89ac0bb8d96d4369e384405f6 100644
--- a/third_party/WebKit/Source/devtools/front_end/quick_open/FilteredListWidget.js
+++ b/third_party/WebKit/Source/devtools/front_end/quick_open/FilteredListWidget.js
@@ -15,7 +15,6 @@ QuickOpen.FilteredListWidget = class extends UI.VBox {
   constructor(delegate, promptHistory) {
     super(true);
     this._promptHistory = promptHistory || [];
-    this._renderAsTwoRows = delegate.renderAsTwoRows();
 
     this.contentElement.classList.add('filtered-list-widget');
     this.contentElement.addEventListener('keydown', this._onKeyDown.bind(this), true);
@@ -54,7 +53,6 @@ QuickOpen.FilteredListWidget = class extends UI.VBox {
     this._delegate = delegate;
     this._delegate.setRefreshCallback(this._itemsLoaded.bind(this));
     this._itemsLoaded();
-    this._updateShowMatchingItems();
   }
 
   /**
@@ -122,7 +120,6 @@ QuickOpen.FilteredListWidget = class extends UI.VBox {
     this._dialog.setPosition(null, 22);
     this.show(this._dialog.element);
     this._dialog.show();
-    this._updateShowMatchingItems();
   }
 
   /**
@@ -153,9 +150,7 @@ QuickOpen.FilteredListWidget = class extends UI.VBox {
    */
   _onEnter(event) {
     event.preventDefault();
-    if (!this._delegate.itemCount())
-      return;
-    var selectedIndexInDelegate = this._shouldShowMatchingItems() ? this._list.selectedItem() : null;
+    var selectedIndexInDelegate = this._delegate.itemCount() ? this._list.selectedItem() : null;
 
     // Detach dialog before allowing delegate to override focus.
     if (this._dialog)
@@ -181,7 +176,7 @@ QuickOpen.FilteredListWidget = class extends UI.VBox {
    */
   createElementForItem(item) {
     var itemElement = createElement('div');
-    itemElement.className = 'filtered-list-widget-item ' + (this._renderAsTwoRows ? 'two-rows' : 'one-row');
+    itemElement.className = 'filtered-list-widget-item ' + (this._delegate.renderAsTwoRows() ? 'two-rows' : 'one-row');
     var titleElement = itemElement.createChild('div', 'filtered-list-widget-title');
     var subtitleElement = itemElement.createChild('div', 'filtered-list-widget-subtitle');
     subtitleElement.textContent = '\u200B';
@@ -234,9 +229,9 @@ QuickOpen.FilteredListWidget = class extends UI.VBox {
    */
   setQuery(query) {
     this._prompt.setText(query);
+    this._delegate.queryChanged(query);
     this._prompt.autoCompleteSoon(true);
     this._scheduleFilter();
-    this._updateShowMatchingItems();
   }
 
   _tabKeyPressed() {
@@ -383,26 +378,14 @@ QuickOpen.FilteredListWidget = class extends UI.VBox {
     this._list.element.classList.toggle('hidden', !hasItems);
     this._notFoundElement.classList.toggle('hidden', hasItems);
     if (!hasItems)
-      this._notFoundElement.textContent = this._delegate.notFoundText();
-  }
-
-  /**
-   * @return {boolean}
-   */
-  _shouldShowMatchingItems() {
-    return this._delegate.shouldShowMatchingItems(this._value());
+      this._notFoundElement.textContent = this._delegate.notFoundText(this._value());
   }
 
   _onInput() {
-    this._updateShowMatchingItems();
+    this._delegate.queryChanged(this._value());
     this._scheduleFilter();
   }
 
-  _updateShowMatchingItems() {
-    var shouldShowMatchingItems = this._shouldShowMatchingItems();
-    this._bottomElementsContainer.classList.toggle('hidden', !shouldShowMatchingItems);
-  }
-
   /**
    * @param {!Event} event
    */
@@ -463,14 +446,6 @@ QuickOpen.FilteredListWidget.Delegate = class {
   }
 
   /**
-   * @param {string} query
-   * @return {boolean}
-   */
-  shouldShowMatchingItems(query) {
-    return true;
-  }
-
-  /**
    * @return {number}
    */
   itemCount() {
@@ -537,9 +512,16 @@ QuickOpen.FilteredListWidget.Delegate = class {
   }
 
   /**
+   * @param {string} query
+   */
+  queryChanged(query) {
+  }
+
+  /**
+   * @param {string} query
    * @return {string}
    */
-  notFoundText() {
+  notFoundText(query) {
     return Common.UIString('No results found');
   }