Add prompt-yank command

add yank_text property to utils.usertypes.Question class

Resolves #2591

qutebrowser/browser/downloads.py

@@ -166,6 +166,7 @@ def get_filename_question(*, suggested_filename, url, parent=None):
     q.title = "Save file to:"
     q.text = "Please enter a location for <b>{}</b>".format(
         html.escape(url.toDisplayString()))
+    q.yank_text = url.toString()
     q.mode = usertypes.PromptMode.download
     q.completed.connect(q.deleteLater)
     q.default = _path_suggestion(suggested_filename)

qutebrowser/mainwindow/prompt.py

@@ -422,6 +422,18 @@ class PromptContainer(QWidget):
         except UnsupportedOperationError:
             pass
 
+    @cmdutils.register(instance='prompt-container', scope='window',
+                       modes=[usertypes.KeyMode.prompt])
+    def prompt_yank(self):
+        """Yank URLs or other data in prompts."""
+        question = self._prompt.question
+        s = None
+        if question and hasattr(question, 'yank_text'):
+            s = question.yank_text
+        utils.set_clipboard(s)
+        message.info("Yanked download URL to clipboard: {}".format(s))
+
+
 
 class LineEdit(QLineEdit):
 
@@ -721,6 +733,7 @@ class DownloadFilenamePrompt(FilenamePrompt):
             ('prompt-accept', 'Accept'),
             ('leave-mode', 'Abort'),
             ('prompt-open-download', "Open download"),
+            ('prompt-yank', "Yank URLs in prompts"),
         ]
         return cmds
 

qutebrowser/utils/usertypes.py

@@ -266,6 +266,7 @@ class Question(QObject):
                  For user_pwd, a default username as string.
         title: The question title to show.
         text: The prompt text to display to the user.
+        yank_text: The prompt text available to prompt-yank command.
         answer: The value the user entered (as password for user_pwd).
         is_aborted: Whether the question was aborted.
         interrupted: Whether the question was interrupted by another one.
@@ -296,6 +297,7 @@ class Question(QObject):
         self.default = None
         self.title = None
         self.text = None
+        self.yank_text = None
         self.answer = None
         self.is_aborted = False
         self.interrupted = False