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/* This extension is a derived work of the Gnome Shell.
*
* Copyright (c) 2013 Paolo Tranquilli
*
* This extension is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This extension is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this extension; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import GLib from 'gi://GLib';
import GObject from 'gi://GObject';
import Meta from 'gi://Meta';
import { Extension, InjectionManager }
from 'resource:///org/gnome/shell/extensions/extension.js';
import { Workspace } from 'resource:///org/gnome/shell/ui/workspace.js';
import { WindowPreview } from 'resource:///org/gnome/shell/ui/windowPreview.js';
import { ControlsState } from 'resource:///org/gnome/shell/ui/overviewControls.js';
import { SettingsWatch } from './settingsWatch.js';
export default class MiddleClickClose extends Extension {
#settings;
#injectionManager;
#refocusOnClose;
enable() {
this.#settings = new SettingsWatch(this.getSettings(), {
close_button: { get: v => v.value, },
rearrange_delay: {},
keyboard_close: {},
});
this.#refocusOnClose = new WeakSet();
this.#injectionManager = new InjectionManager();
this.#patchClickHandler();
this.#patchWindowRepositioningDelay();
this.#patchKeyClose();
}
disable() {
this.#injectionManager.clear();
this.#injectionManager = null;
this.#refocusOnClose = null;
this.#settings.clear();
this.#settings = null;
}
#patchClickHandler() {
// Patch _addWindowClone() to override the clicked signal handler for window clones (which
// is what gnome calls window previews).
const settings = this.#settings;
this.#injectionManager.overrideMethod(Workspace.prototype, '_addWindowClone',
original => function () {
let clone = original.apply(this, arguments);
// This relies on implementation details of both gnome and gobject. Mainly the order
// the clone's actions are defined and the order with which signal handlers are
// connected on the click action. Just pray this never breaks... Or that gnome moves
// the click handler into a named function. That'd be nice too :)
let [clickAction] = clone.get_actions();
let id = GObject.signal_handler_find(clickAction, { signalId: 'clicked' });
clickAction.disconnect(id);
clickAction.connect('clicked', action => {
if (action.get_button() == settings.close_button) {
clone._deleteAll();
} else {
clone._activate();
}
});
return clone;
}
);
}
#patchWindowRepositioningDelay() {
// It'd be nice to just change the WINDOW_REPOSITIONING_DELAY in workspace.js, but
// apparently that is impossible with the switch to ESM. Instead, we'll monkey-patch
// _doRemoveWindow() and change the timeout after the fact.
const settings = this.#settings;
const refocusOnClose = this.#refocusOnClose;
const lastLayoutFrozenIds = new WeakMap();
this.#injectionManager.overrideMethod(Workspace.prototype, '_doRemoveWindow',
original => function (metaWin) {
// Grab the old window's focus chain index.
let focus_idx = this.get_focus_chain()
.findIndex(clone => clone.metaWindow == metaWin);
// Call the original method.
const ret = original.apply(this, arguments);
if (refocusOnClose.has(metaWin)) {
// Find a "nearby" window to refocus to, based on the old index
const chain = this.get_focus_chain();
if (focus_idx >= chain.length) {
focus_idx = chain.length - 1;
}
// Focus on the selected window.
if (focus_idx >= 0) {
global.stage.key_focus = chain[focus_idx];
}
}
// Adjust the freeze delay.
if (this._layoutFrozenId > 0
&& this._layoutFrozenId != lastLayoutFrozenIds.get(this)
) {
const src = GLib.MainContext.default().find_source_by_id(this._layoutFrozenId);
src.set_ready_time(src.get_time() + settings.rearrange_delay * 1000);
}
// Need to keep the last id to avoid adjusting the layout freeze delay more than
// once.
lastLayoutFrozenIds.set(this, this._layoutFrozenId);
return ret;
})
}
#patchKeyClose() {
// If Meta.KeyBindingAction.CLOSE is fired in while a WindowPreview is focused, close it.
const settings = this.#settings;
const refocusOnClose = this.#refocusOnClose;
function handleKeyPress(event) {
// Keyboard close disabled in settings.
if (!settings.keyboard_close) {
return false;
}
// We only care about window picker mode.
if (this._workspace._overviewAdjustment.value !== ControlsState.WINDOW_PICKER) {
return false;
}
const action = global.display.get_keybinding_action(
event.get_key_code(), event.get_state());
if (action == Meta.KeyBindingAction.CLOSE) {
if (this._workspace.metaWorkspace?.active) {
// Imediately refocus on another window when closing via keyboard.
refocusOnClose.add(this.metaWindow);
// Close the window.
this._deleteAll();
} else {
// Switch to the workspace the focused window is in.
this._workspace.metaWorkspace?.activate(global.get_current_time())
}
return true;
}
return false;
}
this.#injectionManager.overrideMethod(WindowPreview.prototype, 'vfunc_key_press_event',
original => function () {
return handleKeyPress.apply(this, arguments)
|| original.apply(this, arguments);
}
)
}
};
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