Add support for frontend hotkeys; add scanSelectedText action (#1266)

* Add support for frontend hotkeys; add scanSelectedText action

* Remove unused global

* Remove duplicate hotkey handler script

9 files changed, 60 insertions, 7 deletions

diff --git a/ext/bg/data/options-schema.json b/ext/bg/data/options-schema.json
index def279cc..a140d3e9 100644
--- a/ext/bg/data/options-schema.json
+++ b/ext/bg/data/options-schema.json
@@ -1011,7 +1011,7 @@
                                                     "type": "array",
                                                     "items": {
                                                         "type": "string",
-                                                        "enum": ["popup", "search"],
+                                                        "enum": ["popup", "search", "web"],
                                                         "default": "popup"
                                                     },
                                                     "default": ["popup", "search"]
diff --git a/ext/bg/js/settings/popup-preview-frame-main.js b/ext/bg/js/settings/popup-preview-frame-main.js
index a639ced7..71454017 100644
--- a/ext/bg/js/settings/popup-preview-frame-main.js
+++ b/ext/bg/js/settings/popup-preview-frame-main.js
@@ -16,6 +16,7 @@
  */
 
 /* global
+ * HotkeyHandler
  * PopupFactory
  * PopupPreviewFrame
  * api
@@ -27,10 +28,13 @@
 
         const {frameId} = await api.frameInformationGet();
 
+        const hotkeyHandler = new HotkeyHandler();
+        hotkeyHandler.prepare();
+
         const popupFactory = new PopupFactory(frameId);
         popupFactory.prepare();
 
-        const preview = new PopupPreviewFrame(frameId, popupFactory);
+        const preview = new PopupPreviewFrame(frameId, popupFactory, hotkeyHandler);
         await preview.prepare();
 
         document.documentElement.dataset.loaded = 'true';
diff --git a/ext/bg/js/settings/popup-preview-frame.js b/ext/bg/js/settings/popup-preview-frame.js
index 73d8882a..92b57c7a 100644
--- a/ext/bg/js/settings/popup-preview-frame.js
+++ b/ext/bg/js/settings/popup-preview-frame.js
@@ -23,9 +23,10 @@
  */
 
 class PopupPreviewFrame {
-    constructor(frameId, popupFactory) {
+    constructor(frameId, popupFactory, hotkeyHandler) {
         this._frameId = frameId;
         this._popupFactory = popupFactory;
+        this._hotkeyHandler = hotkeyHandler;
         this._frontend = null;
         this._apiOptionsGetOld = null;
         this._popupShown = false;
@@ -74,7 +75,8 @@ class PopupPreviewFrame {
             useProxyPopup: false,
             pageType: 'web',
             allowRootFramePopupProxy: false,
-            childrenSupported: false
+            childrenSupported: false,
+            hotkeyHandler: this._hotkeyHandler
         });
         this._frontend.setOptionsContextOverride(this._optionsContext);
         await this._frontend.prepare();
diff --git a/ext/bg/popup-preview.html b/ext/bg/popup-preview.html
index 75386e24..d8855946 100644
--- a/ext/bg/popup-preview.html
+++ b/ext/bg/popup-preview.html
@@ -45,6 +45,7 @@
 <script src="/mixed/js/text-scanner.js"></script>
 
 <script src="/mixed/js/document-util.js"></script>
+<script src="/mixed/js/hotkey-handler.js"></script>
 <script src="/fg/js/dom-text-scanner.js"></script>
 <script src="/fg/js/popup.js"></script>
 <script src="/fg/js/text-source-range.js"></script>
diff --git a/ext/bg/settings2.html b/ext/bg/settings2.html
index 0fd3feb0..128bd5ef 100644
--- a/ext/bg/settings2.html
+++ b/ext/bg/settings2.html
@@ -3014,10 +3014,15 @@
             <option value="viewNote" data-scopes="popup search">View note</option>
             <option value="playAudio" data-scopes="popup search">Play audio</option>
             <option value="copyHostSelection" data-scopes="popup search">Copy selection</option>
+            <option value="scanSelectedText" data-scopes="web">Scan selected text</option>
         </select>
         <div class="hotkey-list-item-flex-row">
             <div class="hotkey-list-item-flex-row-label">Scopes:</div>
             <div class="hotkey-list-item-flex-row">
+                <label class="hotkey-scope-checkbox-container" data-scope="web">
+                    <label class="checkbox"><input type="checkbox" class="hotkey-scope-checkbox" data-scope="web"><span class="checkbox-body"><span class="checkbox-fill"></span><span class="checkbox-border"></span><span class="checkbox-check"></span></span></label>
+                    <span>Web</span>
+                </label>
                 <label class="hotkey-scope-checkbox-container" data-scope="popup">
                     <label class="checkbox"><input type="checkbox" class="hotkey-scope-checkbox" data-scope="popup"><span class="checkbox-body"><span class="checkbox-fill"></span><span class="checkbox-border"></span><span class="checkbox-check"></span></span></label>
                     <span>Popup</span>
diff --git a/ext/fg/js/content-script-main.js b/ext/fg/js/content-script-main.js
index 80a600e2..42f95e24 100644
--- a/ext/fg/js/content-script-main.js
+++ b/ext/fg/js/content-script-main.js
@@ -17,6 +17,7 @@
 
 /* global
  * Frontend
+ * HotkeyHandler
  * PopupFactory
  * api
  */
@@ -31,6 +32,9 @@
             throw new Error('Failed to get frameId');
         }
 
+        const hotkeyHandler = new HotkeyHandler();
+        hotkeyHandler.prepare();
+
         const popupFactory = new PopupFactory(frameId);
         popupFactory.prepare();
 
@@ -42,7 +46,8 @@
             parentFrameId: null,
             useProxyPopup: false,
             pageType: 'web',
-            allowRootFramePopupProxy: true
+            allowRootFramePopupProxy: true,
+            hotkeyHandler
         });
         await frontend.prepare();
 
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index d789c4f0..e9b57eb5 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -19,6 +19,7 @@
  * DocumentUtil
  * TextScanner
  * TextSourceElement
+ * TextSourceRange
  * api
  */
 
@@ -32,7 +33,8 @@ class Frontend {
         parentFrameId,
         useProxyPopup,
         allowRootFramePopupProxy,
-        childrenSupported=true
+        childrenSupported=true,
+        hotkeyHandler
     }) {
         this._pageType = pageType;
         this._popupFactory = popupFactory;
@@ -43,6 +45,7 @@ class Frontend {
         this._useProxyPopup = useProxyPopup;
         this._allowRootFramePopupProxy = allowRootFramePopupProxy;
         this._childrenSupported = childrenSupported;
+        this._hotkeyHandler = hotkeyHandler;
         this._popup = null;
         this._disabledOverride = false;
         this._options = null;
@@ -71,6 +74,10 @@ class Frontend {
             ['setAllVisibleOverride',         {async: true,  handler: this._onApiSetAllVisibleOverride.bind(this)}],
             ['clearAllVisibleOverride',       {async: true,  handler: this._onApiClearAllVisibleOverride.bind(this)}]
         ]);
+
+        this._hotkeyHandler.registerActions([
+            ['scanSelectedText', this._onActionScanSelectedText.bind(this)]
+        ]);
     }
 
     get canClearSelection() {
@@ -161,6 +168,12 @@ class Frontend {
         this._signalFrontendReady(frameId);
     }
 
+    // Action handlers
+
+    _onActionScanSelectedText() {
+        this._scanSelectedText();
+    }
+
     // API message handlers
 
     _onApiGetUrl() {
@@ -319,6 +332,8 @@ class Frontend {
         const {scanning: scanningOptions, sentenceParsing: sentenceParsingOptions} = options;
         this._options = options;
 
+        this._hotkeyHandler.setHotkeys('web', options.inputs.hotkeys);
+
         await this._updatePopup();
 
         const preventMiddleMouse = this._getPreventMiddleMouseValueForPageType(scanningOptions.preventMiddleMouse);
@@ -646,4 +661,23 @@ class Frontend {
             detail: {documentTitle}
         };
     }
+
+    async _scanSelectedText() {
+        const range = this._getFirstNonEmptySelectionRange();
+        if (range === null) { return false; }
+        const source = new TextSourceRange(range, range.toString(), null, null);
+        await this._textScanner.search(source, {focus: true});
+        return true;
+    }
+
+    _getFirstNonEmptySelectionRange() {
+        const selection = window.getSelection();
+        for (let i = 0, ii = selection.rangeCount; i < ii; ++i) {
+            const range = selection.getRangeAt(i);
+            if (range.toString().length > 0) {
+                return range;
+            }
+        }
+        return null;
+    }
 }
diff --git a/ext/manifest.json b/ext/manifest.json
index 97f77dde..495044a4 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -46,6 +46,7 @@
                 "mixed/js/frame-client.js",
                 "mixed/js/text-scanner.js",
                 "mixed/js/document-util.js",
+                "mixed/js/hotkey-handler.js",
                 "fg/js/dom-text-scanner.js",
                 "fg/js/popup.js",
                 "fg/js/text-source-range.js",
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index c017a2f1..3c7deefe 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -1640,7 +1640,8 @@ class Display extends EventDispatcher {
             popupFactory,
             pageType: this._pageType,
             allowRootFramePopupProxy: true,
-            childrenSupported: this._childrenSupported
+            childrenSupported: this._childrenSupported,
+            hotkeyHandler: this._hotkeyHandler
         });
 
         const frontend = new Frontend(setupNestedPopupsOptions);