From caaa6b6fdad45704f73598ef51e3b4b84d6844e6 Mon Sep 17 00:00:00 2001
From: Axel Dahlberg <git@valleymnt.com>
Date: Fri, 4 Feb 2022 17:38:26 +0100
Subject: feat(tabbedbrowser) add option to select mode based on url pattern

---
 qutebrowser/config/configdata.yml       | 12 ++++++++++++
 qutebrowser/mainwindow/tabbedbrowser.py | 21 +++++++++++++++++++++
 tests/end2end/features/tabs.feature     | 19 +++++++++++++++++++
 3 files changed, 52 insertions(+)

diff --git a/qutebrowser/config/configdata.yml b/qutebrowser/config/configdata.yml
index cf5e4665a..59f16511f 100644
--- a/qutebrowser/config/configdata.yml
+++ b/qutebrowser/config/configdata.yml
@@ -1811,6 +1811,18 @@ input.match_counts:
     Disabling it allows for emacs-like bindings where number keys are passed
     through (according to `input.forward_unbound_keys`) instead.
 
+input.mode_override:
+  default: null
+  type:
+    name: String
+    none_ok: true
+    valid_values:
+      - normal
+      - insert
+      - passthrough
+  supports_pattern: true
+  desc: Mode to change to when focusing on a tab/URL changes.
+
 ## keyhint
 
 keyhint.blacklist:
diff --git a/qutebrowser/mainwindow/tabbedbrowser.py b/qutebrowser/mainwindow/tabbedbrowser.py
index c3f06e185..da688367e 100644
--- a/qutebrowser/mainwindow/tabbedbrowser.py
+++ b/qutebrowser/mainwindow/tabbedbrowser.py
@@ -223,6 +223,10 @@ class TabbedBrowser(QWidget):
         # https://bugreports.qt.io/browse/QTBUG-65223
         self.cur_load_finished.connect(self._leave_modes_on_load)
 
+        # handle mode_override
+        self.current_tab_changed.connect(lambda tab: self._mode_override(tab.url()))
+        self.cur_url_changed.connect(self._mode_override)
+
         # This init is never used, it is immediately thrown away in the next
         # line.
         self.undo_stack: UndoStackType = collections.deque()
@@ -777,6 +781,23 @@ class TabbedBrowser(QWidget):
         if not self.widget.page_title(idx):
             self.widget.set_page_title(idx, url.toDisplayString())
 
+    def _mode_override(self, url: QUrl) -> None:
+        """Override mode if url matches pattern.
+
+        Args:
+            url: The QUrl to match for
+        """
+        if not url.isValid():
+            return
+        mode = config.instance.get('input.mode_override', url=url)
+        if mode:
+            log.modes.debug(f"Mode change to {mode} triggered for url {url}")
+            modeman.enter(
+                self._win_id,
+                usertypes.KeyMode[mode],
+                reason='mode_override',
+            )
+
     @pyqtSlot(browsertab.AbstractTab)
     def _on_icon_changed(self, tab):
         """Set the icon of a tab.
diff --git a/tests/end2end/features/tabs.feature b/tests/end2end/features/tabs.feature
index 3715d5765..54e84a10e 100644
--- a/tests/end2end/features/tabs.feature
+++ b/tests/end2end/features/tabs.feature
@@ -1741,3 +1741,22 @@ Feature: Tab management
         And I run :undo
         And I run :message-info "Still alive!"
         Then the message "Still alive!" should be shown
+
+    Scenario: Passthrough mode override
+        When I run :set -u localhost:*/data/numbers/1.txt input.mode_override 'passthrough'
+        And I open data/numbers/1.txt
+        Then "Entering mode KeyMode.passthrough (reason: mode_override)" should be logged
+
+    Scenario: Insert mode override
+        When I run :set -u localhost:*/data/numbers/1.txt  input.mode_override 'insert'
+        And I open data/numbers/1.txt
+        Then "Entering mode KeyMode.insert (reason: mode_override)" should be logged
+
+    Scenario: Mode override on tab switch
+        When I run :set -u localhost:*/data/numbers/1.txt input.mode_override 'insert'
+        And I open data/numbers/1.txt
+        And I wait for "Entering mode KeyMode.insert (reason: mode_override)" in the log
+        And I run :fake-key -g <esc>
+        And I open data/numbers/2.txt in a new tab
+        And I run :tab-prev
+        Then "Entering mode KeyMode.insert (reason: mode_override)" should be logged
-- 
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