Implement QWebPage:javaScript*

qutebrowser/browser/webpage.py

@@ -22,9 +22,12 @@ from PyQt5.QtCore import QCoreApplication
 from PyQt5.QtNetwork import QNetworkReply
 from PyQt5.QtWebKitWidgets import QWebPage
 
+import qutebrowser.utils.message as message
 import qutebrowser.utils.url as urlutils
 import qutebrowser.config.config as config
+import qutebrowser.utils.log as log
 from qutebrowser.utils.misc import read_file
+from qutebrowser.utils.usertypes import PromptMode
 
 
 class BrowserPage(QWebPage):
@@ -105,3 +108,24 @@ class BrowserPage(QWebPage):
         except KeyError:
             return super().extension(ext, opt, out)
         return handler(opt, out)
+
+    def javaScriptAlert(self, _frame, msg):
+        """Override javaScriptAlert to use the statusbar."""
+        message.modular_question("js: {}".format(msg), PromptMode.alert)
+
+    def javaScriptConfirm(self, _frame, msg):
+        """Override javaScriptConfirm to use the statusbar."""
+        return message.modular_question("js: {}".format(msg), PromptMode.yesno)
+
+    def javaScriptConsoleMessage(self, msg, line, source):
+        """Override javaScriptConsoleMessage to use debug log."""
+        log.js.info("[{}:{}] {}".format(source, line, msg))
+
+    def javaScriptPrompt(self, _frame, msg, default):
+        """Override javaScriptConfirm to use the statusbar."""
+        answer = message.modular_question(
+            "js: {}".format(msg), PromptMode.text, default)
+        if answer is None:
+            return (False, "")
+        else:
+            return (True, answer)

qutebrowser/utils/log.py

@@ -45,6 +45,7 @@ init = getLogger('init')
 signals = getLogger('signals')
 hints = getLogger('hints')
 keyboard = getLogger('keyboard')
+js = getLogger('js')
 
 
 ram_handler = None

qutebrowser/utils/message.py

@@ -80,6 +80,14 @@ def modular_question(message, mode, default=None):
     return q.answer
 
 
+def alert(message):
+    """Display an alert which needs to be confirmed."""
+    q = Question()
+    q.text = message
+    q.mode = PromptMode.alert
+    instance().question.emit(q, True)
+
+
 def question(message, mode, handler, default=None):
     """Ask an async question in the statusbar.
 

qutebrowser/utils/usertypes.py

@@ -248,7 +248,7 @@ class FakeDict:
 
 
 # The mode of a Question.
-PromptMode = enum('yesno', 'text', 'user_pwd')
+PromptMode = enum('yesno', 'text', 'user_pwd', 'alert')
 
 
 class Question(QObject):

qutebrowser/widgets/statusbar/_prompt.py

@@ -111,6 +111,11 @@ class Prompt(QWidget):
             self.question.answer = self.question.default
             modeman.leave('yesno', 'yesno accept')
             self.question.answered.emit()
+        elif self.question.mode == PromptMode.alert:
+            # User acknowledged an alert
+            self.question.answer = None
+            modeman.leave('prompt', 'alert accept')
+            self.question.answered.emit()
         else:
             raise ValueError("Invalid question mode!")
 
@@ -167,6 +172,10 @@ class Prompt(QWidget):
                 self._input.setText(q.default)
             self._input.show()
             mode = 'prompt'
+        elif q.mode == PromptMode.alert:
+            self._txt.setText(q.text + ' (ok)')
+            self._input.hide()
+            mode = 'prompt'
         else:
             raise ValueError("Invalid prompt mode!")
         self._input.setFocus()