Adding upstream version 43.9.upstream/43.9upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 386 insertions, 0 deletions

diff --git a/js/misc/inputMethod.js b/js/misc/inputMethod.js
new file mode 100644
index 0000000..e01eac8
--- /dev/null
+++ b/js/misc/inputMethod.js
@@ -0,0 +1,386 @@
+// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
+/* exported InputMethod */
+const { Clutter, GLib, Gio, GObject, IBus } = imports.gi;
+
+const Keyboard = imports.ui.status.keyboard;
+const Main = imports.ui.main;
+
+Gio._promisify(IBus.Bus.prototype,
+    'create_input_context_async', 'create_input_context_async_finish');
+Gio._promisify(IBus.InputContext.prototype,
+    'process_key_event_async', 'process_key_event_async_finish');
+
+var HIDE_PANEL_TIME = 50;
+
+const HAVE_REQUIRE_SURROUNDING_TEXT = GObject.signal_lookup('require-surrounding-text', IBus.InputContext);
+
+var InputMethod = GObject.registerClass({
+    Signals: {
+        'surrounding-text-set': {},
+        'terminal-mode-changed': {},
+    },
+}, class InputMethod extends Clutter.InputMethod {
+    _init() {
+        super._init();
+        this._hints = 0;
+        this._purpose = 0;
+        this._currentFocus = null;
+        this._preeditStr = '';
+        this._preeditPos = 0;
+        this._preeditAnchor = 0;
+        this._preeditVisible = false;
+        this._hidePanelId = 0;
+        this.terminalMode = false;
+        this._ibus = IBus.Bus.new_async();
+        this._ibus.connect('connected', this._onConnected.bind(this));
+        this._ibus.connect('disconnected', this._clear.bind(this));
+        this.connect('notify::can-show-preedit', this._updateCapabilities.bind(this));
+
+        this._inputSourceManager = Keyboard.getInputSourceManager();
+        this._sourceChangedId = this._inputSourceManager.connect('current-source-changed',
+                                                                 this._onSourceChanged.bind(this));
+        this._currentSource = this._inputSourceManager.currentSource;
+
+        if (this._ibus.is_connected())
+            this._onConnected();
+    }
+
+    get currentFocus() {
+        return this._currentFocus;
+    }
+
+    _updateCapabilities() {
+        let caps = IBus.Capabilite.PREEDIT_TEXT | IBus.Capabilite.FOCUS | IBus.Capabilite.SURROUNDING_TEXT;
+
+        if (Main.keyboard.visible)
+            caps |= IBus.Capabilite.OSK;
+
+        if (this._context)
+            this._context.set_capabilities(caps);
+    }
+
+    _onSourceChanged() {
+        this._currentSource = this._inputSourceManager.currentSource;
+    }
+
+    async _onConnected() {
+        this._cancellable = new Gio.Cancellable();
+        try {
+            this._context = await this._ibus.create_input_context_async(
+                'gnome-shell', -1, this._cancellable);
+        } catch (e) {
+            if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED)) {
+                logError(e);
+                this._clear();
+            }
+            return;
+        }
+
+        this._context.set_client_commit_preedit(true);
+        this._context.connect('commit-text', this._onCommitText.bind(this));
+        this._context.connect('delete-surrounding-text', this._onDeleteSurroundingText.bind(this));
+        this._context.connect('update-preedit-text-with-mode', this._onUpdatePreeditText.bind(this));
+        this._context.connect('show-preedit-text', this._onShowPreeditText.bind(this));
+        this._context.connect('hide-preedit-text', this._onHidePreeditText.bind(this));
+        this._context.connect('forward-key-event', this._onForwardKeyEvent.bind(this));
+        this._context.connect('destroy', this._clear.bind(this));
+
+        if (HAVE_REQUIRE_SURROUNDING_TEXT)
+            this._context.connect('require-surrounding-text', this._onRequireSurroundingText.bind(this));
+
+        Main.keyboard.connectObject('visibility-changed', () => this._updateCapabilities());
+
+        this._updateCapabilities();
+    }
+
+    _clear() {
+        Main.keyboard.disconnectObject(this);
+
+        if (this._cancellable) {
+            this._cancellable.cancel();
+            this._cancellable = null;
+        }
+
+        this._context = null;
+        this._hints = 0;
+        this._purpose = 0;
+        this._preeditStr = '';
+        this._preeditPos = 0;
+        this._preeditAnchor = 0;
+        this._preeditVisible = false;
+    }
+
+    _emitRequestSurrounding() {
+        if (this._context.needs_surrounding_text())
+            this.emit('request-surrounding');
+    }
+
+    _onCommitText(_context, text) {
+        this.commit(text.get_text());
+    }
+
+    _onRequireSurroundingText(_context) {
+        this.request_surrounding();
+    }
+
+    _onDeleteSurroundingText(_context, offset, nchars) {
+        try {
+            this.delete_surrounding(offset, nchars);
+        } catch (e) {
+            // We may get out of bounds for negative offset on older mutter
+            this.delete_surrounding(0, nchars + offset);
+        }
+    }
+
+    _onUpdatePreeditText(_context, text, pos, visible, mode) {
+        if (text == null)
+            return;
+
+        let preedit = text.get_text();
+        if (preedit === '')
+            preedit = null;
+
+        const anchor = pos;
+        if (visible)
+            this.set_preedit_text(preedit, pos, anchor, mode);
+        else if (this._preeditVisible)
+            this.set_preedit_text(null, pos, anchor, mode);
+
+        this._preeditStr = preedit;
+        this._preeditPos = pos;
+        this._preeditAnchor = anchor;
+        this._preeditVisible = visible;
+        this._preeditCommitMode = mode;
+    }
+
+    _onShowPreeditText() {
+        this._preeditVisible = true;
+        this.set_preedit_text(
+            this._preeditStr, this._preeditPos, this._preeditAnchor,
+            this._preeditCommitMode);
+    }
+
+    _onHidePreeditText() {
+        this.set_preedit_text(
+            null, this._preeditPos, this._preeditAnchor,
+            this._preeditCommitMode);
+        this._preeditVisible = false;
+    }
+
+    _onForwardKeyEvent(_context, keyval, keycode, state) {
+        let press = (state & IBus.ModifierType.RELEASE_MASK) == 0;
+        state &= ~IBus.ModifierType.RELEASE_MASK;
+
+        let curEvent = Clutter.get_current_event();
+        let time;
+        if (curEvent)
+            time = curEvent.get_time();
+        else
+            time = global.display.get_current_time_roundtrip();
+
+        this.forward_key(keyval, keycode + 8, state & Clutter.ModifierType.MODIFIER_MASK, time, press);
+    }
+
+    vfunc_focus_in(focus) {
+        this._currentFocus = focus;
+        if (this._context) {
+            this.update();
+            this._context.focus_in();
+            this._emitRequestSurrounding();
+        }
+
+        if (this._hidePanelId) {
+            GLib.source_remove(this._hidePanelId);
+            this._hidePanelId = 0;
+        }
+    }
+
+    vfunc_focus_out() {
+        this._currentFocus = null;
+        if (this._context) {
+            this._fullReset();
+            this._context.focus_out();
+        }
+
+        if (this._preeditStr && this._preeditVisible) {
+            // Unset any preedit text
+            this.set_preedit_text(null, 0, 0, this._preeditCommitMode);
+            this._preeditStr = null;
+        }
+
+        this._hidePanelId = GLib.timeout_add(GLib.PRIORITY_DEFAULT, HIDE_PANEL_TIME, () => {
+            this.set_input_panel_state(Clutter.InputPanelState.OFF);
+            this._hidePanelId = 0;
+            return GLib.SOURCE_REMOVE;
+        });
+    }
+
+    vfunc_reset() {
+        if (this._context) {
+            this._context.reset();
+            this._emitRequestSurrounding();
+        }
+
+        this._surroundingText = null;
+        this._surroundingTextCursor = null;
+        this._preeditStr = null;
+        this._setTerminalMode(false);
+    }
+
+    vfunc_set_cursor_location(rect) {
+        if (this._context) {
+            this._cursorRect = {
+                x: rect.get_x(), y: rect.get_y(),
+                width: rect.get_width(), height: rect.get_height(),
+            };
+            this._context.set_cursor_location(
+                this._cursorRect.x, this._cursorRect.y,
+                this._cursorRect.width, this._cursorRect.height);
+            this._emitRequestSurrounding();
+        }
+    }
+
+    vfunc_set_surrounding(text, cursor, anchor) {
+        this._surroundingText = text;
+        this._surroundingTextCursor = cursor;
+        this.emit('surrounding-text-set');
+
+        if (!this._context || (!text && text !== ''))
+            return;
+
+        let ibusText = IBus.Text.new_from_string(text);
+        this._context.set_surrounding_text(ibusText, cursor, anchor);
+    }
+
+    vfunc_update_content_hints(hints) {
+        let ibusHints = 0;
+        if (hints & Clutter.InputContentHintFlags.COMPLETION)
+            ibusHints |= IBus.InputHints.WORD_COMPLETION;
+        if (hints & Clutter.InputContentHintFlags.SPELLCHECK)
+            ibusHints |= IBus.InputHints.SPELLCHECK;
+        if (hints & Clutter.InputContentHintFlags.AUTO_CAPITALIZATION)
+            ibusHints |= IBus.InputHints.UPPERCASE_SENTENCES;
+        if (hints & Clutter.InputContentHintFlags.LOWERCASE)
+            ibusHints |= IBus.InputHints.LOWERCASE;
+        if (hints & Clutter.InputContentHintFlags.UPPERCASE)
+            ibusHints |= IBus.InputHints.UPPERCASE_CHARS;
+        if (hints & Clutter.InputContentHintFlags.TITLECASE)
+            ibusHints |= IBus.InputHints.UPPERCASE_WORDS;
+
+        this._hints = ibusHints;
+        if (this._context)
+            this._context.set_content_type(this._purpose, this._hints);
+    }
+
+    vfunc_update_content_purpose(purpose) {
+        let ibusPurpose = 0;
+        if (purpose == Clutter.InputContentPurpose.NORMAL)
+            ibusPurpose = IBus.InputPurpose.FREE_FORM;
+        else if (purpose == Clutter.InputContentPurpose.ALPHA)
+            ibusPurpose = IBus.InputPurpose.ALPHA;
+        else if (purpose == Clutter.InputContentPurpose.DIGITS)
+            ibusPurpose = IBus.InputPurpose.DIGITS;
+        else if (purpose == Clutter.InputContentPurpose.NUMBER)
+            ibusPurpose = IBus.InputPurpose.NUMBER;
+        else if (purpose == Clutter.InputContentPurpose.PHONE)
+            ibusPurpose = IBus.InputPurpose.PHONE;
+        else if (purpose == Clutter.InputContentPurpose.URL)
+            ibusPurpose = IBus.InputPurpose.URL;
+        else if (purpose == Clutter.InputContentPurpose.EMAIL)
+            ibusPurpose = IBus.InputPurpose.EMAIL;
+        else if (purpose == Clutter.InputContentPurpose.NAME)
+            ibusPurpose = IBus.InputPurpose.NAME;
+        else if (purpose == Clutter.InputContentPurpose.PASSWORD)
+            ibusPurpose = IBus.InputPurpose.PASSWORD;
+        else if (purpose === Clutter.InputContentPurpose.TERMINAL &&
+                 IBus.InputPurpose.TERMINAL)
+            ibusPurpose = IBus.InputPurpose.TERMINAL;
+
+        this._setTerminalMode(
+            purpose === Clutter.InputContentPurpose.TERMINAL);
+
+        this._purpose = ibusPurpose;
+        if (this._context)
+            this._context.set_content_type(this._purpose, this._hints);
+    }
+
+    _setTerminalMode(terminalMode) {
+        if (this.terminalMode !== terminalMode) {
+            this.terminalMode = terminalMode;
+            this.emit('terminal-mode-changed');
+        }
+    }
+
+    vfunc_filter_key_event(event) {
+        if (!this._context)
+            return false;
+        if (!this._currentSource)
+            return false;
+
+        let state = event.get_state();
+        if (state & IBus.ModifierType.IGNORED_MASK)
+            return false;
+
+        if (event.type() == Clutter.EventType.KEY_RELEASE)
+            state |= IBus.ModifierType.RELEASE_MASK;
+
+        this._context.process_key_event_async(
+            event.get_key_symbol(),
+            event.get_key_code() - 8, // Convert XKB keycodes to evcodes
+            state, -1, this._cancellable,
+            (context, res) => {
+                if (context != this._context)
+                    return;
+
+                try {
+                    let retval = context.process_key_event_async_finish(res);
+                    this.notify_key_event(event, retval);
+                } catch (e) {
+                    if (!e.matches(Gio.IOErrorEnum, Gio.IOErrorEnum.CANCELLED))
+                        log(`Error processing key on IM: ${e.message}`);
+                }
+            });
+        return true;
+    }
+
+    getSurroundingText() {
+        return [this._surroundingText, this._surroundingTextCursor];
+    }
+
+    hasPreedit() {
+        return this._preeditVisible && this._preeditStr !== '' && this._preeditStr !== null;
+    }
+
+    async handleVirtualKey(keyval) {
+        try {
+            if (!await this._context.process_key_event_async(
+                keyval, 0, 0, -1, null))
+                return false;
+
+            await this._context.process_key_event_async(
+                keyval, 0, IBus.ModifierType.RELEASE_MASK, -1, null);
+            return true;
+        } catch (e) {
+            return false;
+        }
+    }
+
+    _fullReset() {
+        this._context.set_content_type(0, 0);
+        this._context.set_cursor_location(0, 0, 0, 0);
+        this._context.reset();
+    }
+
+    update() {
+        if (!this._context)
+            return;
+        this._updateCapabilities();
+        this._context.set_content_type(this._purpose, this._hints);
+        if (this._cursorRect) {
+            this._context.set_cursor_location(
+                this._cursorRect.x, this._cursorRect.y,
+                this._cursorRect.width, this._cursorRect.height);
+        }
+        this._emitRequestSurrounding();
+    }
+});