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extension.js
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extension.js
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// Switcher is a Gnome Shell extension allowing quickly switching windows by typing
// Copyright (C) 2015 Daniel Landau
//
// This program 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 3 of the License, or
// (at your option) any later version.
//
// This program 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 program. If not, see <http://www.gnu.org/licenses/>.
/*global imports, print */
const St = imports.gi.St;
const Clutter = imports.gi.Clutter;
const Main = imports.ui.main;
const Shell = imports.gi.Shell;
const Meta = imports.gi.Meta;
const Gettext = imports.gettext;
const Tweener = imports.ui.tweener;
const ExtensionUtils = imports.misc.extensionUtils;
const Me = ExtensionUtils.getCurrentExtension();
const Convenience = Me.imports.convenience;
const keyActivation = Me.imports.keyActivation.KeyActivation;
const switcher = Me.imports.modes.switcher.Switcher;
const launcher = Me.imports.modes.launcher.Launcher;
const util = Me.imports.util;
const onboarding = Me.imports.onboarding;
let container, containers, cursor;
function _showUI(mode, entryText, previousWidth) {
'use strict';
if (container)
return;
cursor = 0;
const makeBoxes = function(apps, mode) {
mode.cleanIDs();
return apps
.slice(0, mode.MAX_NUM_ITEMS)
.map((a, i) => mode.makeBox(a, i, (app) => { cleanUIWithFade(); mode.activate(app); }));
};
const fontSize = Convenience.getSettings().get_uint('font-size');
let boxLayout = new St.BoxLayout({style_class: 'switcher-box-layout'});
boxLayout.set_style('font-size: ' + fontSize + 'px');
boxLayout.set_vertical(true);
const apps = mode.apps();
let filteredApps = util.filterByText(mode, apps, entryText);
const debouncedActivateUnique = util.debounce(() => {
if (filteredApps.length === 1) {
cleanUIWithFade();
mode.activate(filteredApps[cursor]);
}
}, Convenience.getSettings().get_uint('activate-after-ms'));
let boxes = makeBoxes(filteredApps, mode);
util.updateHighlight(boxes, entryText, cursor);
let entry =
new St.Entry({style_class: 'switcher-entry'});
entry.set_text(entryText);
boxLayout.insert_child_at_index(entry, 0);
boxes.forEach((box) => boxLayout.insert_child_at_index(box.whole, -1));
let primaryMonitor = Main.layoutManager.primaryMonitor;
let allMonitors = Main.layoutManager.monitors;
containers = allMonitors.map(monitor => {
let tmpContainer = new St.Bin({reactive: true});
tmpContainer.set_alignment(St.Align.MIDDLE, St.Align.START);
tmpContainer.set_width(monitor.width);
tmpContainer.set_height(monitor.height);
tmpContainer.set_position(monitor.x, monitor.y);
Main.uiGroup.add_actor(tmpContainer);
if (monitor === primaryMonitor) container = tmpContainer;
return tmpContainer;
})
// sort primary last so it gets to the top of the modal stack
.sort((a, b) => a === primaryMonitor ? 1 : -1);
if (previousWidth === undefined && Convenience.getSettings().get_boolean('fade-enable')) {
boxLayout.opacity = 0;
Tweener.addTween(boxLayout, { opacity: 255, time: .35, transition: 'easeOutQuad'});
}
container.add_actor(boxLayout);
let width =
boxes.map(box => box.whole.width)
.reduce((a, b) => Math.max(a, b), 0);
let shortcutWidth =
boxes.map(box => box.shortcutBox ? box.shortcutBox.width : 0)
.reduce((a, b) => Math.max(a, b), 0);
const maxWidth = Main.layoutManager.primaryMonitor.width * 0.01 *
Convenience.getSettings().get_uint('max-width-percentage');
if (width > maxWidth)
width = maxWidth;
if (width < maxWidth/2)
width = maxWidth/2;
if (previousWidth && Number(previousWidth) === previousWidth) width = previousWidth;
boxes.forEach(box => util.fixWidths(box, width, shortcutWidth));
entry.set_width(width);
// handle what we can on key press and the rest on key release
entry.connect('key-press-event', (o, e) => {
const control = (e.get_state() & Clutter.ModifierType.CONTROL_MASK) !== 0;
const shift = (e.get_state() & Clutter.ModifierType.SHIFT_MASK) !== 0;
const symbol = e.get_key_symbol();
// Exit
if (symbol === Clutter.KEY_Escape) {
cleanUIWithFade();
}
// Switch mode
else if (((symbol === Clutter.m) && control) ||
((symbol === Clutter.KEY_Tab) && control) ||
((symbol === Clutter.KEY_space) && control)) {
switchMode();
}
// Next entry
else if ((symbol === Clutter.KEY_Down) ||
(symbol === Clutter.KEY_Tab) ||
((symbol === Clutter.n) && control)) {
cursor = cursor + 1 < boxes.length ? cursor + 1 : 0;
util.updateHighlight(boxes, o.text, cursor);
}
// Previous entry
else if ((symbol === Clutter.KEY_Up) ||
((symbol === Clutter.ISO_Left_Tab) && shift) ||
((symbol === Clutter.KEY_Tab) && shift) ||
((symbol === Clutter.p) && control)) {
cursor = cursor > 0 ? cursor - 1 : boxes.length - 1;
util.updateHighlight(boxes, o.text, cursor);
}
});
entry.connect('key-release-event', (o, e) => {
const control = (e.get_state() & Clutter.ModifierType.CONTROL_MASK) !== 0;
const shift = (e.get_state() & Clutter.ModifierType.SHIFT_MASK) !== 0;
const symbol = e.get_key_symbol();
let fkeyIndex = keyActivation.getActionKeyTable().indexOf(symbol);
if (symbol === Clutter.KEY_Escape ||
((symbol === Clutter.m) && control) ||
((symbol === Clutter.KEY_Tab) && control) ||
((symbol === Clutter.KEY_space) && control) ||
(symbol === Clutter.KEY_Down) ||
(symbol === Clutter.KEY_Tab) ||
((symbol === Clutter.n) && control) ||
(symbol === Clutter.KEY_Up) ||
((symbol === Clutter.ISO_Left_Tab) && shift) ||
((symbol === Clutter.KEY_Tab) && shift) ||
((symbol === Clutter.p) && control)) {
// pass, these where handled already in keypress
}
// Activate selected entry
else if ((symbol === Clutter.KEY_Return) ||
(symbol === Clutter.KEY_KP_Enter) ||
((symbol === Clutter.j) && control)) {
cleanUIWithFade();
if (filteredApps.length > 0) {
// If shift pressed and we are in switcher mode, bring the window in our current workspace.
if(mode.name() === "Switcher" && shift)
filteredApps[cursor].change_workspace_by_index(global.screen.get_active_workspace_index(), true);
mode.activate(filteredApps[cursor]);
}
}
// Activate entry by shortcut
else if (fkeyIndex >= 0 && fkeyIndex < filteredApps.length) {
cleanUIWithFade();
mode.activate(filteredApps[fkeyIndex]);
}
// Filter text
else {
// Delete last character
if ((symbol === Clutter.h) && control) {
const entryText = entry.get_clutter_text();
let textCursor = entryText.get_cursor_position();
if (textCursor == -1)
textCursor = o.text.length;
entryText.delete_text(textCursor - 1, textCursor);
}
filteredApps = util.filterByText(mode, apps, o.text);
if (Convenience.getSettings().get_boolean('activate-immediately') &&
filteredApps.length === 1 &&
symbol !== Clutter.Control_L &&
symbol !== Clutter.Control_R) {
debouncedActivateUnique();
}
const otherMode = mode.name() === "Switcher" ? launcher : switcher;
const filteredAppsInOtherMode = util.filterByText(otherMode, otherMode.apps(), entry.get_text());
// switch automatically when we have zero apps, the other mode has some apps, and we are not
// just releasing control, meaning e.g. that we just tried to switch the mode and this switches
// it back
if (filteredApps.length === 0 && filteredAppsInOtherMode.length > 0 && !control) {
switchMode();
}
cleanBoxes();
boxes = makeBoxes(filteredApps, mode);
// If there's less boxes then in previous cursor position,
// set cursor to the last box
if (cursor + 1 > boxes.length)
cursor = Math.max(boxes.length - 1, 0);
util.updateHighlight(boxes, o.text, cursor);
boxes.forEach((box) => {
util.fixWidths(box, width, shortcutWidth);
boxLayout.insert_child_at_index(box.whole, -1);
});
}
});
containers.forEach (c => {
Main.pushModal(c, { actionMode: Shell.ActionMode.SYSTEM_MODAL });
c.connect('button-press-event', cleanUIWithFade);
c.show();
});
global.stage.set_key_focus(entry);
// In the bottom as a function statement so the variables closed
// over are defined and so it's hoisted up
function cleanBoxes() {
boxes.forEach(box => {
box.iconBox.get_children().forEach(child => util.destroyParent(child));
box.iconBox.destroy();
boxLayout.remove_child(box.whole);
});
};
function switchMode () {
let previousText = entry.get_text();
cleanUI();
debouncedActivateUnique.cancel();
(mode.name() === "Switcher")
? _showUI(launcher, previousText, width)
: _showUI(switcher, previousText, width);
};
// this and the following function contain some of the same copy pasted code
function cleanUI () {
cleanBoxes();
containers.reverse().forEach(c => {
Main.uiGroup.remove_actor(c);
Main.popModal(c);
});
container = null;
containers = null;
};
function cleanUIWithFade () {
containers.reverse().forEach(c => {
Main.popModal(c);
});
const cleanRest = function () {
cleanBoxes();
containers.reverse().forEach(c => {
Main.uiGroup.remove_actor(c);
});
container = null;
containers = null;
};
if (Convenience.getSettings().get_boolean('fade-enable')) {
Tweener.addTween(boxLayout, { opacity: 0, time: .35, transition: 'easeOutQuad', onComplete: cleanRest });
} else {
cleanRest();
}
}
}
function init() {
Gettext.textdomain("switcher");
Gettext.bindtextdomain("switcher", Me.path + "/locale");
}
function enable() {
Main.wm.addKeybinding(
'show-switcher', Convenience.getSettings(), Meta.KeyBindingFlags.NONE, Shell.ActionMode.NORMAL,
() => _showUI(switcher, ""));
Main.wm.addKeybinding(
'show-launcher', Convenience.getSettings(), Meta.KeyBindingFlags.NONE, Shell.ActionMode.NORMAL,
() => _showUI(launcher, ""));
onboarding.showOne();
}
function disable() {
Main.wm.removeKeybinding('show-switcher');
Main.wm.removeKeybinding('show-launcher');
}