gnome-shell/js/ui/popupMenu.js
Jasper St. Pierre 8583ca73e4 popupMenu: Fix regular submenus
This method was originally private, but it was renamed quickly
before landing, and I forgot to update it.
2013-05-14 13:58:10 -04:00

1939 lines
64 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
const Gio = imports.gi.Gio;
const Lang = imports.lang;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const St = imports.gi.St;
const Atk = imports.gi.Atk;
const BoxPointer = imports.ui.boxpointer;
const GrabHelper = imports.ui.grabHelper;
const Main = imports.ui.main;
const Params = imports.misc.params;
const Separator = imports.ui.separator;
const Tweener = imports.ui.tweener;
const SLIDER_SCROLL_STEP = 0.05; /* Slider scrolling step in % */
const Ornament = {
NONE: 0,
DOT: 1,
CHECK: 2,
};
function _ensureStyle(actor) {
if (actor.get_children) {
let children = actor.get_children();
for (let i = 0; i < children.length; i++)
_ensureStyle(children[i]);
}
if (actor instanceof St.Widget)
actor.ensure_style();
}
const PopupBaseMenuItem = new Lang.Class({
Name: 'PopupBaseMenuItem',
_init: function (params) {
params = Params.parse (params, { reactive: true,
activate: true,
hover: true,
sensitive: true,
style_class: null,
can_focus: true
});
this.actor = new Shell.GenericContainer({ style_class: 'popup-menu-item',
reactive: params.reactive,
track_hover: params.reactive,
can_focus: params.can_focus,
accessible_role: Atk.Role.MENU_ITEM});
this.actor.connect('get-preferred-width', Lang.bind(this, this._getPreferredWidth));
this.actor.connect('get-preferred-height', Lang.bind(this, this._getPreferredHeight));
this.actor.connect('allocate', Lang.bind(this, this._allocate));
this.actor.connect('style-changed', Lang.bind(this, this._onStyleChanged));
this.actor._delegate = this;
this._children = [];
this._ornament = Ornament.NONE;
this._ornamentLabel = new St.Label({ style_class: 'popup-menu-ornament' });
this.actor.add_actor(this._ornamentLabel);
this._columnWidths = null;
this._spacing = 0;
this.active = false;
this._activatable = params.reactive && params.activate;
this.sensitive = this._activatable && params.sensitive;
this.setSensitive(this.sensitive);
if (!this._activatable)
this.actor.add_style_class_name('popup-inactive-menu-item');
if (params.style_class)
this.actor.add_style_class_name(params.style_class);
if (this._activatable) {
this.actor.connect('button-release-event', Lang.bind(this, this._onButtonReleaseEvent));
this.actor.connect('key-press-event', Lang.bind(this, this._onKeyPressEvent));
}
if (params.reactive && params.hover)
this.actor.connect('notify::hover', Lang.bind(this, this._onHoverChanged));
this.actor.connect('key-focus-in', Lang.bind(this, this._onKeyFocusIn));
this.actor.connect('key-focus-out', Lang.bind(this, this._onKeyFocusOut));
},
_onStyleChanged: function (actor) {
this._spacing = Math.round(actor.get_theme_node().get_length('spacing'));
},
_onButtonReleaseEvent: function (actor, event) {
this.activate(event);
return true;
},
_onKeyPressEvent: function (actor, event) {
let symbol = event.get_key_symbol();
if (symbol == Clutter.KEY_space || symbol == Clutter.KEY_Return) {
this.activate(event);
return true;
}
return false;
},
_onKeyFocusIn: function (actor) {
this.setActive(true);
},
_onKeyFocusOut: function (actor) {
this.setActive(false);
},
_onHoverChanged: function (actor) {
this.setActive(actor.hover);
},
activate: function (event) {
this.emit('activate', event);
},
setActive: function (active, params) {
let activeChanged = active != this.active;
params = Params.parse (params, { grabKeyboard: true });
if (activeChanged) {
this.active = active;
if (active) {
this.actor.add_style_pseudo_class('active');
if (params.grabKeyboard)
this.actor.grab_key_focus();
} else
this.actor.remove_style_pseudo_class('active');
this.emit('active-changed', active);
}
},
setSensitive: function(sensitive) {
if (!this._activatable)
return;
if (this.sensitive == sensitive)
return;
this.sensitive = sensitive;
this.actor.reactive = sensitive;
this.actor.can_focus = sensitive;
this.emit('sensitive-changed', sensitive);
},
destroy: function() {
this.actor.destroy();
this.emit('destroy');
},
// adds an actor to the menu item; @params can contain %span
// (column span; defaults to 1, -1 means "all the remaining width"),
// %expand (defaults to #false), and %align (defaults to
// #St.Align.START)
addActor: function(child, params) {
params = Params.parse(params, { span: 1,
expand: false,
align: St.Align.START });
params.actor = child;
this._children.push(params);
this.actor.connect('destroy', Lang.bind(this, function () { this._removeChild(child); }));
this.actor.add_actor(child);
},
_removeChild: function(child) {
for (let i = 0; i < this._children.length; i++) {
if (this._children[i].actor == child) {
this._children.splice(i, 1);
return;
}
}
},
removeActor: function(child) {
this.actor.remove_actor(child);
this._removeChild(child);
},
setOrnament: function(ornament) {
if (ornament == this._ornament)
return;
this._ornament = ornament;
if (ornament == Ornament.DOT) {
this._ornamentLabel.text = '\u2022';
this.actor.add_accessible_state(Atk.StateType.CHECKED);
} else if (ornament == Ornament.CHECK) {
this._ornamentLabel.text = '\u2713';
this.actor.add_accessible_state(Atk.StateType.CHECKED);
} else if (ornament == Ornament.NONE) {
this._ornamentLabel.text = '';
this.actor.remove_accessible_state(Atk.StateType.CHECKED);
}
},
// This returns column widths in logical order (i.e. from the dot
// to the image), not in visual order (left to right)
getColumnWidths: function() {
let widths = [];
for (let i = 0, col = 0; i < this._children.length; i++) {
let child = this._children[i];
let [min, natural] = child.actor.get_preferred_width(-1);
widths[col++] = natural;
if (child.span > 1) {
for (let j = 1; j < child.span; j++)
widths[col++] = 0;
}
}
return widths;
},
setColumnWidths: function(widths) {
this._columnWidths = widths;
},
_getPreferredWidth: function(actor, forHeight, alloc) {
let width = 0;
if (this._columnWidths) {
for (let i = 0; i < this._columnWidths.length; i++) {
if (i > 0)
width += this._spacing;
width += this._columnWidths[i];
}
} else {
for (let i = 0; i < this._children.length; i++) {
let child = this._children[i];
if (i > 0)
width += this._spacing;
let [min, natural] = child.actor.get_preferred_width(-1);
width += natural;
}
}
alloc.min_size = alloc.natural_size = width;
},
_getPreferredHeight: function(actor, forWidth, alloc) {
let height = 0, x = 0, minWidth, childWidth;
for (let i = 0; i < this._children.length; i++) {
let child = this._children[i];
if (this._columnWidths) {
if (child.span == -1) {
childWidth = 0;
for (let j = i; j < this._columnWidths.length; j++)
childWidth += this._columnWidths[j]
} else
childWidth = this._columnWidths[i];
} else {
if (child.span == -1)
childWidth = forWidth - x;
else
[minWidth, childWidth] = child.actor.get_preferred_width(-1);
}
x += childWidth;
let [min, natural] = child.actor.get_preferred_height(childWidth);
if (natural > height)
height = natural;
}
alloc.min_size = alloc.natural_size = height;
},
_allocate: function(actor, box, flags) {
let height = box.y2 - box.y1;
let direction = this.actor.get_text_direction();
// The ornament is placed outside box
// one quarter of padding from the border of the container
// (so 3/4 from the inner border)
// (padding is box.x1)
let ornamentBox = new Clutter.ActorBox();
let ornamentWidth = box.x1;
ornamentBox.x1 = 0;
ornamentBox.x2 = ornamentWidth;
ornamentBox.y1 = box.y1;
ornamentBox.y2 = box.y2;
if (direction == Clutter.TextDirection.RTL) {
ornamentBox.x1 += box.x2;
ornamentBox.x2 += box.x2;
}
this._ornamentLabel.allocate(ornamentBox, flags);
let x;
if (direction == Clutter.TextDirection.LTR)
x = box.x1;
else
x = box.x2;
// if direction is ltr, x is the right edge of the last added
// actor, and it's constantly increasing, whereas if rtl, x is
// the left edge and it decreases
for (let i = 0, col = 0; i < this._children.length; i++) {
let child = this._children[i];
let childBox = new Clutter.ActorBox();
let [minWidth, naturalWidth] = child.actor.get_preferred_width(-1);
let availWidth, extraWidth;
if (this._columnWidths) {
if (child.span == -1) {
if (direction == Clutter.TextDirection.LTR)
availWidth = box.x2 - x;
else
availWidth = x - box.x1;
} else {
availWidth = 0;
for (let j = 0; j < child.span; j++)
availWidth += this._columnWidths[col++];
}
extraWidth = availWidth - naturalWidth;
} else {
if (child.span == -1) {
if (direction == Clutter.TextDirection.LTR)
availWidth = box.x2 - x;
else
availWidth = x - box.x1;
} else {
availWidth = naturalWidth;
}
extraWidth = 0;
}
if (direction == Clutter.TextDirection.LTR) {
if (child.expand) {
childBox.x1 = x;
childBox.x2 = x + availWidth;
} else if (child.align === St.Align.MIDDLE) {
childBox.x1 = x + Math.round(extraWidth / 2);
childBox.x2 = childBox.x1 + naturalWidth;
} else if (child.align === St.Align.END) {
childBox.x2 = x + availWidth;
childBox.x1 = childBox.x2 - naturalWidth;
} else {
childBox.x1 = x;
childBox.x2 = x + naturalWidth;
}
} else {
if (child.expand) {
childBox.x1 = x - availWidth;
childBox.x2 = x;
} else if (child.align === St.Align.MIDDLE) {
childBox.x1 = x - Math.round(extraWidth / 2);
childBox.x2 = childBox.x1 + naturalWidth;
} else if (child.align === St.Align.END) {
// align to the left
childBox.x1 = x - availWidth;
childBox.x2 = childBox.x1 + naturalWidth;
} else {
// align to the right
childBox.x2 = x;
childBox.x1 = x - naturalWidth;
}
}
let [minHeight, naturalHeight] = child.actor.get_preferred_height(childBox.x2 - childBox.x1);
childBox.y1 = Math.round(box.y1 + (height - naturalHeight) / 2);
childBox.y2 = childBox.y1 + naturalHeight;
child.actor.allocate(childBox, flags);
if (direction == Clutter.TextDirection.LTR)
x += availWidth + this._spacing;
else
x -= availWidth + this._spacing;
}
}
});
Signals.addSignalMethods(PopupBaseMenuItem.prototype);
const PopupMenuItem = new Lang.Class({
Name: 'PopupMenuItem',
Extends: PopupBaseMenuItem,
_init: function (text, params) {
this.parent(params);
this.label = new St.Label({ text: text });
this.addActor(this.label);
this.actor.label_actor = this.label
}
});
const PopupSeparatorMenuItem = new Lang.Class({
Name: 'PopupSeparatorMenuItem',
Extends: PopupBaseMenuItem,
_init: function (text) {
this.parent({ reactive: false,
can_focus: false});
this._box = new St.BoxLayout();
this.addActor(this._box, { span: -1, expand: true });
this.label = new St.Label({ text: text || '' });
this._box.add(this.label);
this.actor.label_actor = this.label;
this._separator = new Separator.HorizontalSeparator({ style_class: 'popup-separator-menu-item' });
this._box.add(this._separator.actor, { expand: true });
}
});
const PopupAlternatingMenuItemState = {
DEFAULT: 0,
ALTERNATIVE: 1
}
const PopupAlternatingMenuItem = new Lang.Class({
Name: 'PopupAlternatingMenuItem',
Extends: PopupBaseMenuItem,
_init: function(text, alternateText, params) {
this.parent(params);
this.actor.add_style_class_name('popup-alternating-menu-item');
this._text = text;
this._alternateText = alternateText;
this.label = new St.Label({ text: text });
this.state = PopupAlternatingMenuItemState.DEFAULT;
this.addActor(this.label);
this.actor.label_actor = this.label;
this.actor.connect('notify::mapped', Lang.bind(this, this._onMapped));
},
_onMapped: function() {
if (this.actor.mapped) {
this._capturedEventId = global.stage.connect('captured-event',
Lang.bind(this, this._onCapturedEvent));
this._updateStateFromModifiers();
} else {
if (this._capturedEventId != 0) {
global.stage.disconnect(this._capturedEventId);
this._capturedEventId = 0;
}
}
},
_setState: function(state) {
if (this.state != state) {
if (state == PopupAlternatingMenuItemState.ALTERNATIVE && !this._canAlternate())
return;
this.state = state;
this._updateLabel();
}
},
_updateStateFromModifiers: function() {
let [x, y, mods] = global.get_pointer();
let state;
if ((mods & Clutter.ModifierType.MOD1_MASK) == 0) {
state = PopupAlternatingMenuItemState.DEFAULT;
} else {
state = PopupAlternatingMenuItemState.ALTERNATIVE;
}
this._setState(state);
},
_onCapturedEvent: function(actor, event) {
if (event.type() != Clutter.EventType.KEY_PRESS &&
event.type() != Clutter.EventType.KEY_RELEASE)
return false;
let key = event.get_key_symbol();
if (key == Clutter.KEY_Alt_L || key == Clutter.KEY_Alt_R)
this._updateStateFromModifiers();
return false;
},
_updateLabel: function() {
if (this.state == PopupAlternatingMenuItemState.ALTERNATIVE) {
this.actor.add_style_pseudo_class('alternate');
this.label.set_text(this._alternateText);
} else {
this.actor.remove_style_pseudo_class('alternate');
this.label.set_text(this._text);
}
},
_canAlternate: function() {
if (this.state == PopupAlternatingMenuItemState.DEFAULT && !this._alternateText)
return false;
return true;
},
updateText: function(text, alternateText) {
this._text = text;
this._alternateText = alternateText;
if (!this._canAlternate())
this._setState(PopupAlternatingMenuItemState.DEFAULT);
this._updateLabel();
}
});
const PopupSliderMenuItem = new Lang.Class({
Name: 'PopupSliderMenuItem',
Extends: PopupBaseMenuItem,
_init: function(value) {
this.parent({ activate: false });
this.actor.connect('key-press-event', Lang.bind(this, this._onKeyPressEvent));
if (isNaN(value))
// Avoid spreading NaNs around
throw TypeError('The slider value must be a number');
this._value = Math.max(Math.min(value, 1), 0);
this._slider = new St.DrawingArea({ style_class: 'popup-slider-menu-item', reactive: true });
this.addActor(this._slider, { span: -1, expand: true });
this._slider.connect('repaint', Lang.bind(this, this._sliderRepaint));
this.actor.connect('button-press-event', Lang.bind(this, this._startDragging));
this.actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
this.actor.connect('notify::mapped', Lang.bind(this, function() {
if (!this.actor.mapped)
this._endDragging();
}));
this._releaseId = this._motionId = 0;
this._dragging = false;
},
setValue: function(value) {
if (isNaN(value))
throw TypeError('The slider value must be a number');
this._value = Math.max(Math.min(value, 1), 0);
this._slider.queue_repaint();
},
_sliderRepaint: function(area) {
let cr = area.get_context();
let themeNode = area.get_theme_node();
let [width, height] = area.get_surface_size();
let handleRadius = themeNode.get_length('-slider-handle-radius');
let sliderWidth = width - 2 * handleRadius;
let sliderHeight = themeNode.get_length('-slider-height');
let sliderBorderWidth = themeNode.get_length('-slider-border-width');
let sliderBorderColor = themeNode.get_color('-slider-border-color');
let sliderColor = themeNode.get_color('-slider-background-color');
let sliderActiveBorderColor = themeNode.get_color('-slider-active-border-color');
let sliderActiveColor = themeNode.get_color('-slider-active-background-color');
cr.setSourceRGBA (
sliderActiveColor.red / 255,
sliderActiveColor.green / 255,
sliderActiveColor.blue / 255,
sliderActiveColor.alpha / 255);
cr.rectangle(handleRadius, (height - sliderHeight) / 2, sliderWidth * this._value, sliderHeight);
cr.fillPreserve();
cr.setSourceRGBA (
sliderActiveBorderColor.red / 255,
sliderActiveBorderColor.green / 255,
sliderActiveBorderColor.blue / 255,
sliderActiveBorderColor.alpha / 255);
cr.setLineWidth(sliderBorderWidth);
cr.stroke();
cr.setSourceRGBA (
sliderColor.red / 255,
sliderColor.green / 255,
sliderColor.blue / 255,
sliderColor.alpha / 255);
cr.rectangle(handleRadius + sliderWidth * this._value, (height - sliderHeight) / 2, sliderWidth * (1 - this._value), sliderHeight);
cr.fillPreserve();
cr.setSourceRGBA (
sliderBorderColor.red / 255,
sliderBorderColor.green / 255,
sliderBorderColor.blue / 255,
sliderBorderColor.alpha / 255);
cr.setLineWidth(sliderBorderWidth);
cr.stroke();
let handleY = height / 2;
let handleX = handleRadius + (width - 2 * handleRadius) * this._value;
let color = themeNode.get_foreground_color();
cr.setSourceRGBA (
color.red / 255,
color.green / 255,
color.blue / 255,
color.alpha / 255);
cr.arc(handleX, handleY, handleRadius, 0, 2 * Math.PI);
cr.fill();
cr.$dispose();
},
_startDragging: function(actor, event) {
if (this._dragging) // don't allow two drags at the same time
return;
this._dragging = true;
// FIXME: we should only grab the specific device that originated
// the event, but for some weird reason events are still delivered
// outside the slider if using clutter_grab_pointer_for_device
Clutter.grab_pointer(this._slider);
this._releaseId = this._slider.connect('button-release-event', Lang.bind(this, this._endDragging));
this._motionId = this._slider.connect('motion-event', Lang.bind(this, this._motionEvent));
let absX, absY;
[absX, absY] = event.get_coords();
this._moveHandle(absX, absY);
},
_endDragging: function() {
if (this._dragging) {
this._slider.disconnect(this._releaseId);
this._slider.disconnect(this._motionId);
Clutter.ungrab_pointer();
this._dragging = false;
this.emit('drag-end');
}
return true;
},
scroll: function(event) {
let direction = event.get_scroll_direction();
let delta;
if (event.is_pointer_emulated())
return;
if (direction == Clutter.ScrollDirection.DOWN) {
delta = -SLIDER_SCROLL_STEP;
} else if (direction == Clutter.ScrollDirection.UP) {
delta = +SLIDER_SCROLL_STEP;
} else if (direction == Clutter.ScrollDirection.SMOOTH) {
let [dx, dy] = event.get_scroll_delta();
// Even though the slider is horizontal, use dy to match
// the UP/DOWN above.
delta = -dy / 10;
}
this._value = Math.min(Math.max(0, this._value + delta), 1);
this._slider.queue_repaint();
this.emit('value-changed', this._value);
},
_onScrollEvent: function(actor, event) {
this.scroll(event);
},
_motionEvent: function(actor, event) {
let absX, absY;
[absX, absY] = event.get_coords();
this._moveHandle(absX, absY);
return true;
},
_moveHandle: function(absX, absY) {
let relX, relY, sliderX, sliderY;
[sliderX, sliderY] = this._slider.get_transformed_position();
relX = absX - sliderX;
relY = absY - sliderY;
let width = this._slider.width;
let handleRadius = this._slider.get_theme_node().get_length('-slider-handle-radius');
let newvalue;
if (relX < handleRadius)
newvalue = 0;
else if (relX > width - handleRadius)
newvalue = 1;
else
newvalue = (relX - handleRadius) / (width - 2 * handleRadius);
this._value = newvalue;
this._slider.queue_repaint();
this.emit('value-changed', this._value);
},
get value() {
return this._value;
},
_onKeyPressEvent: function (actor, event) {
let key = event.get_key_symbol();
if (key == Clutter.KEY_Right || key == Clutter.KEY_Left) {
let delta = key == Clutter.KEY_Right ? 0.1 : -0.1;
this._value = Math.max(0, Math.min(this._value + delta, 1));
this._slider.queue_repaint();
this.emit('value-changed', this._value);
this.emit('drag-end');
return true;
}
return false;
}
});
const Switch = new Lang.Class({
Name: 'Switch',
_init: function(state) {
this.actor = new St.Bin({ style_class: 'toggle-switch',
accessible_role: Atk.Role.CHECK_BOX,
can_focus: true });
// Translators: this MUST be either "toggle-switch-us"
// (for toggle switches containing the English words
// "ON" and "OFF") or "toggle-switch-intl" (for toggle
// switches containing "◯" and "|"). Other values will
// simply result in invisible toggle switches.
this.actor.add_style_class_name(_("toggle-switch-us"));
this.setToggleState(state);
},
setToggleState: function(state) {
if (state)
this.actor.add_style_pseudo_class('checked');
else
this.actor.remove_style_pseudo_class('checked');
this.state = state;
},
toggle: function() {
this.setToggleState(!this.state);
}
});
const PopupSwitchMenuItem = new Lang.Class({
Name: 'PopupSwitchMenuItem',
Extends: PopupBaseMenuItem,
_init: function(text, active, params) {
this.parent(params);
this.label = new St.Label({ text: text });
this._switch = new Switch(active);
this.actor.accessible_role = Atk.Role.CHECK_MENU_ITEM;
this.checkAccessibleState();
this.actor.label_actor = this.label;
this.addActor(this.label);
this._statusBin = new St.Bin({ x_align: St.Align.END });
this.addActor(this._statusBin,
{ expand: true, span: -1, align: St.Align.END });
this._statusLabel = new St.Label({ text: '',
style_class: 'popup-status-menu-item'
});
this._statusBin.child = this._switch.actor;
},
setStatus: function(text) {
if (text != null) {
this._statusLabel.text = text;
this._statusBin.child = this._statusLabel;
this.actor.reactive = false;
this.actor.accessible_role = Atk.Role.MENU_ITEM;
} else {
this._statusBin.child = this._switch.actor;
this.actor.reactive = true;
this.actor.accessible_role = Atk.Role.CHECK_MENU_ITEM;
}
this.checkAccessibleState();
},
activate: function(event) {
if (this._switch.actor.mapped) {
this.toggle();
}
// we allow pressing space to toggle the switch
// without closing the menu
if (event.type() == Clutter.EventType.KEY_PRESS &&
event.get_key_symbol() == Clutter.KEY_space)
return;
this.parent(event);
},
toggle: function() {
this._switch.toggle();
this.emit('toggled', this._switch.state);
this.checkAccessibleState();
},
get state() {
return this._switch.state;
},
setToggleState: function(state) {
this._switch.setToggleState(state);
this.checkAccessibleState();
},
checkAccessibleState: function() {
switch (this.actor.accessible_role) {
case Atk.Role.CHECK_MENU_ITEM:
if (this._switch.state)
this.actor.add_accessible_state (Atk.StateType.CHECKED);
else
this.actor.remove_accessible_state (Atk.StateType.CHECKED);
break;
default:
this.actor.remove_accessible_state (Atk.StateType.CHECKED);
}
}
});
const PopupImageMenuItem = new Lang.Class({
Name: 'PopupImageMenuItem',
Extends: PopupBaseMenuItem,
_init: function (text, iconName, params) {
this.parent(params);
this.label = new St.Label({ text: text });
this.addActor(this.label);
this._icon = new St.Icon({ style_class: 'popup-menu-icon' });
this.addActor(this._icon, { align: St.Align.END });
this.setIcon(iconName);
},
setIcon: function(name) {
this._icon.icon_name = name;
}
});
const PopupMenuBase = new Lang.Class({
Name: 'PopupMenuBase',
Abstract: true,
_init: function(sourceActor, styleClass) {
this.sourceActor = sourceActor;
if (styleClass !== undefined) {
this.box = new St.BoxLayout({ style_class: styleClass,
vertical: true });
} else {
this.box = new St.BoxLayout({ vertical: true });
}
this.box.connect_after('queue-relayout', Lang.bind(this, this._menuQueueRelayout));
this.length = 0;
this.isOpen = false;
// If set, we don't send events (including crossing events) to the source actor
// for the menu which causes its prelight state to freeze
this.blockSourceEvents = false;
this._activeMenuItem = null;
this._settingsActions = { };
this._sessionUpdatedId = Main.sessionMode.connect('updated', Lang.bind(this, this._sessionUpdated));
},
_sessionUpdated: function() {
this._setSettingsVisibility(Main.sessionMode.allowSettings);
},
addAction: function(title, callback) {
let menuItem = new PopupMenuItem(title);
this.addMenuItem(menuItem);
menuItem.connect('activate', Lang.bind(this, function (menuItem, event) {
callback(event);
}));
return menuItem;
},
addSettingsAction: function(title, desktopFile) {
let menuItem = this.addAction(title, function() {
let app = Shell.AppSystem.get_default().lookup_app(desktopFile);
if (!app) {
log('Settings panel for desktop file ' + desktopFile + ' could not be loaded!');
return;
}
Main.overview.hide();
app.activate();
});
menuItem.actor.visible = Main.sessionMode.allowSettings;
this._settingsActions[desktopFile] = menuItem;
return menuItem;
},
_setSettingsVisibility: function(visible) {
for (let id in this._settingsActions) {
let item = this._settingsActions[id];
item.actor.visible = visible;
}
},
isEmpty: function() {
let hasVisibleChildren = this.box.get_children().some(function(child) {
return child.visible;
});
return !hasVisibleChildren;
},
isChildMenu: function() {
return false;
},
/**
* _connectSubMenuSignals:
* @object: a menu item, or a menu section
* @menu: a sub menu, or a menu section
*
* Connects to signals on @menu that are necessary for
* operating the submenu, and stores the ids on @object.
*/
_connectSubMenuSignals: function(object, menu) {
object._subMenuActivateId = menu.connect('activate', Lang.bind(this, function() {
this.emit('activate');
this.close(BoxPointer.PopupAnimation.FULL);
}));
object._subMenuActiveChangeId = menu.connect('active-changed', Lang.bind(this, function(submenu, submenuItem) {
if (this._activeMenuItem && this._activeMenuItem != submenuItem)
this._activeMenuItem.setActive(false);
this._activeMenuItem = submenuItem;
this.emit('active-changed', submenuItem);
}));
},
_connectItemSignals: function(menuItem) {
menuItem._activeChangeId = menuItem.connect('active-changed', Lang.bind(this, function (menuItem, active) {
if (active && this._activeMenuItem != menuItem) {
if (this._activeMenuItem)
this._activeMenuItem.setActive(false);
this._activeMenuItem = menuItem;
this.emit('active-changed', menuItem);
} else if (!active && this._activeMenuItem == menuItem) {
this._activeMenuItem = null;
this.emit('active-changed', null);
}
}));
menuItem._sensitiveChangeId = menuItem.connect('sensitive-changed', Lang.bind(this, function(menuItem, sensitive) {
if (!sensitive && this._activeMenuItem == menuItem) {
if (!this.actor.navigate_focus(menuItem.actor,
Gtk.DirectionType.TAB_FORWARD,
true))
this.actor.grab_key_focus();
} else if (sensitive && this._activeMenuItem == null) {
if (global.stage.get_key_focus() == this.actor)
menuItem.actor.grab_key_focus();
}
}));
menuItem._activateId = menuItem.connect('activate', Lang.bind(this, function (menuItem, event) {
this.emit('activate', menuItem);
this.close(BoxPointer.PopupAnimation.FULL);
}));
// the weird name is to avoid a conflict with some random property
// the menuItem may have, called destroyId
// (FIXME: in the future it may make sense to have container objects
// like PopupMenuManager does)
menuItem._popupMenuDestroyId = menuItem.connect('destroy', Lang.bind(this, function(menuItem) {
menuItem.disconnect(menuItem._popupMenuDestroyId);
menuItem.disconnect(menuItem._activateId);
menuItem.disconnect(menuItem._activeChangeId);
menuItem.disconnect(menuItem._sensitiveChangeId);
if (menuItem.menu) {
menuItem.menu.disconnect(menuItem._subMenuActivateId);
menuItem.menu.disconnect(menuItem._subMenuActiveChangeId);
this.disconnect(menuItem._closingId);
}
if (menuItem == this._activeMenuItem)
this._activeMenuItem = null;
}));
},
_updateSeparatorVisibility: function(menuItem) {
if (menuItem.label.text)
return;
let children = this.box.get_children();
let index = children.indexOf(menuItem.actor);
if (index < 0)
return;
let childBeforeIndex = index - 1;
while (childBeforeIndex >= 0 && !children[childBeforeIndex].visible)
childBeforeIndex--;
if (childBeforeIndex < 0
|| children[childBeforeIndex]._delegate instanceof PopupSeparatorMenuItem) {
menuItem.actor.hide();
return;
}
let childAfterIndex = index + 1;
while (childAfterIndex < children.length && !children[childAfterIndex].visible)
childAfterIndex++;
if (childAfterIndex >= children.length
|| children[childAfterIndex]._delegate instanceof PopupSeparatorMenuItem) {
menuItem.actor.hide();
return;
}
menuItem.actor.show();
},
addMenuItem: function(menuItem, position) {
let before_item = null;
if (position == undefined) {
this.box.add(menuItem.actor);
} else {
let items = this._getMenuItems();
if (position < items.length) {
before_item = items[position].actor;
this.box.insert_child_below(menuItem.actor, before_item);
} else {
this.box.add(menuItem.actor);
}
}
if (menuItem instanceof PopupMenuSection) {
this._connectSubMenuSignals(menuItem, menuItem);
menuItem._parentOpenStateChangedId = this.connect('open-state-changed',
function(self, open) {
if (open)
menuItem.open();
else
menuItem.close();
});
menuItem.connect('destroy', Lang.bind(this, function() {
menuItem.disconnect(menuItem._subMenuActivateId);
menuItem.disconnect(menuItem._subMenuActiveChangeId);
this.disconnect(menuItem._parentOpenStateChangedId);
this.length--;
}));
} else if (menuItem instanceof PopupSubMenuMenuItem) {
if (before_item == null)
this.box.add(menuItem.menu.actor);
else
this.box.insert_child_below(menuItem.menu.actor, before_item);
this._connectSubMenuSignals(menuItem, menuItem.menu);
this._connectItemSignals(menuItem);
menuItem._closingId = this.connect('open-state-changed', function(self, open) {
if (!open)
menuItem.menu.close(BoxPointer.PopupAnimation.FADE);
});
} else if (menuItem instanceof PopupSeparatorMenuItem) {
this._connectItemSignals(menuItem);
// updateSeparatorVisibility needs to get called any time the
// separator's adjacent siblings change visibility or position.
// open-state-changed isn't exactly that, but doing it in more
// precise ways would require a lot more bookkeeping.
this.connect('open-state-changed', Lang.bind(this, function() { this._updateSeparatorVisibility(menuItem); }));
} else if (menuItem instanceof PopupBaseMenuItem)
this._connectItemSignals(menuItem);
else
throw TypeError("Invalid argument to PopupMenuBase.addMenuItem()");
this.length++;
},
getColumnWidths: function() {
let columnWidths = [];
let items = this.box.get_children();
for (let i = 0; i < items.length; i++) {
if (!items[i].visible &&
!(items[i]._delegate instanceof PopupSubMenu && items[i-1].visible))
continue;
if (items[i]._delegate instanceof PopupBaseMenuItem || items[i]._delegate instanceof PopupMenuBase) {
let itemColumnWidths = items[i]._delegate.getColumnWidths();
for (let j = 0; j < itemColumnWidths.length; j++) {
if (j >= columnWidths.length || itemColumnWidths[j] > columnWidths[j])
columnWidths[j] = itemColumnWidths[j];
}
}
}
return columnWidths;
},
setColumnWidths: function(widths) {
let items = this.box.get_children();
for (let i = 0; i < items.length; i++) {
if (items[i]._delegate instanceof PopupBaseMenuItem || items[i]._delegate instanceof PopupMenuBase)
items[i]._delegate.setColumnWidths(widths);
}
},
// Because of the above column-width funniness, we need to do a
// queue-relayout on every item whenever the menu itself changes
// size, to force clutter to drop its cached size requests. (The
// menuitems will in turn call queue_relayout on their parent, the
// menu, but that call will be a no-op since the menu already
// has a relayout queued, so we won't get stuck in a loop.
_menuQueueRelayout: function() {
this.box.get_children().map(function (actor) { actor.queue_relayout(); });
},
addActor: function(actor) {
this.box.add(actor);
},
_getMenuItems: function() {
return this.box.get_children().map(function (actor) {
return actor._delegate;
}).filter(function(item) {
return item instanceof PopupBaseMenuItem || item instanceof PopupMenuSection;
});
},
get firstMenuItem() {
let items = this._getMenuItems();
if (items.length)
return items[0];
else
return null;
},
get numMenuItems() {
return this._getMenuItems().length;
},
removeAll: function() {
let children = this._getMenuItems();
for (let i = 0; i < children.length; i++) {
let item = children[i];
item.destroy();
}
},
toggle: function() {
if (this.isOpen)
this.close(BoxPointer.PopupAnimation.FULL);
else
this.open(BoxPointer.PopupAnimation.FULL);
},
destroy: function() {
this.close();
this.removeAll();
this.actor.destroy();
this.emit('destroy');
Main.sessionMode.disconnect(this._sessionUpdatedId);
this._sessionUpdatedId = 0;
}
});
Signals.addSignalMethods(PopupMenuBase.prototype);
const PopupMenu = new Lang.Class({
Name: 'PopupMenu',
Extends: PopupMenuBase,
_init: function(sourceActor, arrowAlignment, arrowSide) {
this.parent(sourceActor, 'popup-menu-content');
this._arrowAlignment = arrowAlignment;
this._arrowSide = arrowSide;
this._boxPointer = new BoxPointer.BoxPointer(arrowSide,
{ x_fill: true,
y_fill: true,
x_align: St.Align.START });
this.actor = this._boxPointer.actor;
this.actor._delegate = this;
this.actor.style_class = 'popup-menu-boxpointer';
this._boxWrapper = new Shell.GenericContainer();
this._boxWrapper.connect('get-preferred-width', Lang.bind(this, this._boxGetPreferredWidth));
this._boxWrapper.connect('get-preferred-height', Lang.bind(this, this._boxGetPreferredHeight));
this._boxWrapper.connect('allocate', Lang.bind(this, this._boxAllocate));
this._boxPointer.bin.set_child(this._boxWrapper);
this._boxWrapper.add_actor(this.box);
this.actor.add_style_class_name('popup-menu');
global.focus_manager.add_group(this.actor);
this.actor.reactive = true;
this._childMenus = [];
},
_boxGetPreferredWidth: function (actor, forHeight, alloc) {
let columnWidths = this.getColumnWidths();
this.setColumnWidths(columnWidths);
// Now they will request the right sizes
[alloc.min_size, alloc.natural_size] = this.box.get_preferred_width(forHeight);
},
_boxGetPreferredHeight: function (actor, forWidth, alloc) {
[alloc.min_size, alloc.natural_size] = this.box.get_preferred_height(forWidth);
},
_boxAllocate: function (actor, box, flags) {
this.box.allocate(box, flags);
},
setArrowOrigin: function(origin) {
this._boxPointer.setArrowOrigin(origin);
},
setSourceAlignment: function(alignment) {
this._boxPointer.setSourceAlignment(alignment);
},
isChildMenu: function(menu) {
return this._childMenus.indexOf(menu) != -1;
},
addChildMenu: function(menu) {
if (this.isChildMenu(menu))
return;
this._childMenus.push(menu);
this.emit('child-menu-added', menu);
},
removeChildMenu: function(menu) {
let index = this._childMenus.indexOf(menu);
if (index == -1)
return;
this._childMenus.splice(index, 1);
this.emit('child-menu-removed', menu);
},
open: function(animate) {
if (this.isOpen)
return;
if (this.isEmpty())
return;
this.isOpen = true;
this._boxPointer.setPosition(this.sourceActor, this._arrowAlignment);
this._boxPointer.show(animate);
this.actor.raise_top();
this.emit('open-state-changed', true);
},
close: function(animate) {
if (this._activeMenuItem)
this._activeMenuItem.setActive(false);
this._childMenus.forEach(function(childMenu) {
childMenu.close();
});
if (this._boxPointer.actor.visible)
this._boxPointer.hide(animate);
if (!this.isOpen)
return;
this.isOpen = false;
this.emit('open-state-changed', false);
}
});
const PopupDummyMenu = new Lang.Class({
Name: 'PopupDummyMenu',
_init: function(sourceActor) {
this.sourceActor = sourceActor;
this.actor = sourceActor;
this.actor._delegate = this;
},
isChildMenu: function() {
return false;
},
open: function() { this.emit('open-state-changed', true); },
close: function() { this.emit('open-state-changed', false); },
toggle: function() {},
destroy: function() {
this.emit('destroy');
},
});
Signals.addSignalMethods(PopupDummyMenu.prototype);
const PopupSubMenu = new Lang.Class({
Name: 'PopupSubMenu',
Extends: PopupMenuBase,
_init: function(sourceActor, sourceArrow) {
this.parent(sourceActor);
this._arrow = sourceArrow;
this._arrow.rotation_center_z_gravity = Clutter.Gravity.CENTER;
// Since a function of a submenu might be to provide a "More.." expander
// with long content, we make it scrollable - the scrollbar will only take
// effect if a CSS max-height is set on the top menu.
this.actor = new St.ScrollView({ style_class: 'popup-sub-menu',
hscrollbar_policy: Gtk.PolicyType.NEVER,
vscrollbar_policy: Gtk.PolicyType.NEVER });
this.actor.add_actor(this.box);
this.actor._delegate = this;
this.actor.clip_to_allocation = true;
this.actor.connect('key-press-event', Lang.bind(this, this._onKeyPressEvent));
this.actor.hide();
},
_getTopMenu: function() {
let actor = this.actor.get_parent();
while (actor) {
if (actor._delegate && actor._delegate instanceof PopupMenu)
return actor._delegate;
actor = actor.get_parent();
}
return null;
},
_needsScrollbar: function() {
let topMenu = this._getTopMenu();
let [topMinHeight, topNaturalHeight] = topMenu.actor.get_preferred_height(-1);
let topThemeNode = topMenu.actor.get_theme_node();
let topMaxHeight = topThemeNode.get_max_height();
return topMaxHeight >= 0 && topNaturalHeight >= topMaxHeight;
},
open: function(animate) {
if (this.isOpen)
return;
if (this.isEmpty())
return;
this.isOpen = true;
this.actor.show();
let needsScrollbar = this._needsScrollbar();
// St.ScrollView always requests space horizontally for a possible vertical
// scrollbar if in AUTOMATIC mode. Doing better would require implementation
// of width-for-height in St.BoxLayout and St.ScrollView. This looks bad
// when we *don't* need it, so turn off the scrollbar when that's true.
// Dynamic changes in whether we need it aren't handled properly.
this.actor.vscrollbar_policy =
needsScrollbar ? Gtk.PolicyType.AUTOMATIC : Gtk.PolicyType.NEVER;
if (needsScrollbar)
this.actor.add_style_pseudo_class('scrolled');
else
this.actor.remove_style_pseudo_class('scrolled');
// It looks funny if we animate with a scrollbar (at what point is
// the scrollbar added?) so just skip that case
if (animate && needsScrollbar)
animate = false;
if (animate) {
let [minHeight, naturalHeight] = this.actor.get_preferred_height(-1);
this.actor.height = 0;
this.actor._arrow_rotation = this._arrow.rotation_angle_z;
Tweener.addTween(this.actor,
{ _arrow_rotation: 90,
height: naturalHeight,
time: 0.25,
onUpdateScope: this,
onUpdate: function() {
this._arrow.rotation_angle_z = this.actor._arrow_rotation;
},
onCompleteScope: this,
onComplete: function() {
this.actor.set_height(-1);
this.emit('open-state-changed', true);
}
});
} else {
this._arrow.rotation_angle_z = 90;
this.emit('open-state-changed', true);
}
},
close: function(animate) {
if (!this.isOpen)
return;
this.isOpen = false;
if (this._activeMenuItem)
this._activeMenuItem.setActive(false);
if (animate && this._needsScrollbar())
animate = false;
if (animate) {
this.actor._arrow_rotation = this._arrow.rotation_angle_z;
Tweener.addTween(this.actor,
{ _arrow_rotation: 0,
height: 0,
time: 0.25,
onCompleteScope: this,
onComplete: function() {
this.actor.hide();
this.actor.set_height(-1);
this.emit('open-state-changed', false);
},
onUpdateScope: this,
onUpdate: function() {
this._arrow.rotation_angle_z = this.actor._arrow_rotation;
}
});
} else {
this._arrow.rotation_angle_z = 0;
this.actor.hide();
this.isOpen = false;
this.emit('open-state-changed', false);
}
},
_onKeyPressEvent: function(actor, event) {
// Move focus back to parent menu if the user types Left.
if (this.isOpen && event.get_key_symbol() == Clutter.KEY_Left) {
this.close(BoxPointer.PopupAnimation.FULL);
this.sourceActor._delegate.setActive(true);
return true;
}
return false;
}
});
/**
* PopupMenuSection:
*
* A section of a PopupMenu which is handled like a submenu
* (you can add and remove items, you can destroy it, you
* can add it to another menu), but is completely transparent
* to the user
*/
const PopupMenuSection = new Lang.Class({
Name: 'PopupMenuSection',
Extends: PopupMenuBase,
_init: function() {
this.parent();
this.actor = this.box;
this.actor._delegate = this;
this.isOpen = true;
},
// deliberately ignore any attempt to open() or close(), but emit the
// corresponding signal so children can still pick it up
open: function() { this.emit('open-state-changed', true); },
close: function() { this.emit('open-state-changed', false); },
});
const PopupSubMenuMenuItem = new Lang.Class({
Name: 'PopupSubMenuMenuItem',
Extends: PopupBaseMenuItem,
_init: function(text) {
this.parent();
this.actor.add_style_class_name('popup-submenu-menu-item');
this.label = new St.Label({ text: text });
this.addActor(this.label);
this.actor.label_actor = this.label;
this._triangle = new St.Label({ text: '\u25B8' });
this.addActor(this._triangle, { align: St.Align.END });
this.menu = new PopupSubMenu(this.actor, this._triangle);
this.menu.connect('open-state-changed', Lang.bind(this, this._subMenuOpenStateChanged));
},
_subMenuOpenStateChanged: function(menu, open) {
if (open)
this.actor.add_style_pseudo_class('open');
else
this.actor.remove_style_pseudo_class('open');
},
destroy: function() {
this.menu.destroy();
this.parent();
},
setSubmenuShown: function(open) {
if (open)
this.menu.open(BoxPointer.PopupAnimation.FULL);
else
this.menu.close(BoxPointer.PopupAnimation.FULL);
},
_setOpenState: function(open) {
this.setSubmenuShown(open);
},
_getOpenState: function() {
return this.menu.isOpen;
},
_onKeyPressEvent: function(actor, event) {
let symbol = event.get_key_symbol();
if (symbol == Clutter.KEY_Right) {
this._setOpenState(true);
this.menu.actor.navigate_focus(null, Gtk.DirectionType.DOWN, false);
return true;
} else if (symbol == Clutter.KEY_Left && this._getOpenState()) {
this._setOpenState(false);
return true;
}
return this.parent(actor, event);
},
activate: function(event) {
this._setOpenState(true);
},
_onButtonReleaseEvent: function(actor) {
this._setOpenState(!this._getOpenState());
}
});
const PopupComboMenu = new Lang.Class({
Name: 'PopupComboMenu',
Extends: PopupMenuBase,
_init: function(sourceActor) {
this.parent(sourceActor, 'popup-combo-menu');
this.actor = this.box;
this.actor._delegate = this;
this.actor.connect('key-focus-in', Lang.bind(this, this._onKeyFocusIn));
sourceActor.connect('style-changed',
Lang.bind(this, this._onSourceActorStyleChanged));
this._activeItemPos = -1;
global.focus_manager.add_group(this.actor);
},
_onKeyFocusIn: function(actor) {
let items = this._getMenuItems();
let activeItem = items[this._activeItemPos];
activeItem.actor.grab_key_focus();
},
_onSourceActorStyleChanged: function() {
// PopupComboBoxMenuItem clones the active item's actors
// to work with arbitrary items in the menu; this means
// that we need to propagate some style information and
// enforce style updates even when the menu is closed
let activeItem = this._getMenuItems()[this._activeItemPos];
if (this.sourceActor.has_style_pseudo_class('insensitive'))
activeItem.actor.add_style_pseudo_class('insensitive');
else
activeItem.actor.remove_style_pseudo_class('insensitive');
// To propagate the :active style, we need to make sure that the
// internal state of the PopupComboMenu is updated as well, but
// we must not move the keyboard grab
activeItem.setActive(this.sourceActor.has_style_pseudo_class('active'),
{ grabKeyboard: false });
_ensureStyle(this.actor);
},
open: function() {
if (this.isOpen)
return;
if (this.isEmpty())
return;
this.isOpen = true;
let [sourceX, sourceY] = this.sourceActor.get_transformed_position();
let items = this._getMenuItems();
let activeItem = items[this._activeItemPos];
this.actor.set_position(sourceX, sourceY - activeItem.actor.y);
this.actor.width = Math.max(this.actor.width, this.sourceActor.width);
this.actor.raise_top();
this.actor.opacity = 0;
this.actor.show();
Tweener.addTween(this.actor,
{ opacity: 255,
transition: 'linear',
time: BoxPointer.POPUP_ANIMATION_TIME });
this.emit('open-state-changed', true);
},
close: function() {
if (!this.isOpen)
return;
this.isOpen = false;
Tweener.addTween(this.actor,
{ opacity: 0,
transition: 'linear',
time: BoxPointer.POPUP_ANIMATION_TIME,
onComplete: Lang.bind(this,
function() {
this.actor.hide();
})
});
this.emit('open-state-changed', false);
},
setActiveItem: function(position) {
this._activeItemPos = position;
},
getActiveItem: function() {
return this._getMenuItems()[this._activeItemPos];
},
setItemVisible: function(position, visible) {
if (!visible && position == this._activeItemPos) {
log('Trying to hide the active menu item.');
return;
}
this._getMenuItems()[position].actor.visible = visible;
},
getItemVisible: function(position) {
return this._getMenuItems()[position].actor.visible;
}
});
const PopupComboBoxMenuItem = new Lang.Class({
Name: 'PopupComboBoxMenuItem',
Extends: PopupBaseMenuItem,
_init: function (params) {
this.parent(params);
this.actor.accessible_role = Atk.Role.COMBO_BOX;
this._itemBox = new Shell.Stack();
this.addActor(this._itemBox);
let expander = new St.Label({ text: '\u2304' });
this.addActor(expander, { align: St.Align.END,
span: -1 });
this._menu = new PopupComboMenu(this.actor);
Main.uiGroup.add_actor(this._menu.actor);
this._menu.actor.hide();
if (params.style_class)
this._menu.actor.add_style_class_name(params.style_class);
this.actor.connect('scroll-event', Lang.bind(this, this._onScrollEvent));
this._activeItemPos = -1;
this._items = [];
},
_getTopMenu: function() {
let actor = this.actor.get_parent();
while (actor) {
if (actor._delegate && actor._delegate instanceof PopupMenu)
return actor._delegate;
actor = actor.get_parent();
}
return null;
},
_onScrollEvent: function(actor, event) {
if (this._activeItemPos == -1)
return;
let position = this._activeItemPos;
let direction = event.get_scroll_direction();
if (direction == Clutter.ScrollDirection.DOWN) {
while (position < this._items.length - 1) {
position++;
if (this._menu.getItemVisible(position))
break;
}
} else if (direction == Clutter.ScrollDirection.UP) {
while (position > 0) {
position--;
if (this._menu.getItemVisible(position))
break;
}
}
if (position == this._activeItemPos)
return;
this.setActiveItem(position);
this.emit('active-item-changed', position);
},
activate: function(event) {
let topMenu = this._getTopMenu();
if (!topMenu)
return;
topMenu.addChildMenu(this._menu);
this._menu.toggle();
},
addMenuItem: function(menuItem, position) {
if (position === undefined)
position = this._menu.numMenuItems;
this._menu.addMenuItem(menuItem, position);
_ensureStyle(this._menu.actor);
let item = new St.BoxLayout({ style_class: 'popup-combobox-item' });
let children = menuItem.actor.get_children();
for (let i = 0; i < children.length; i++) {
let clone = new Clutter.Clone({ source: children[i] });
item.add(clone, { y_fill: false });
}
let oldItem = this._items[position];
if (oldItem)
this._itemBox.remove_actor(oldItem);
this._items[position] = item;
this._itemBox.add_actor(item);
menuItem.connect('activate',
Lang.bind(this, this._itemActivated, position));
},
checkAccessibleLabel: function() {
let activeItem = this._menu.getActiveItem();
this.actor.label_actor = activeItem.label;
},
setActiveItem: function(position) {
let item = this._items[position];
if (!item)
return;
if (this._activeItemPos == position)
return;
this._menu.setActiveItem(position);
this._activeItemPos = position;
for (let i = 0; i < this._items.length; i++)
this._items[i].visible = (i == this._activeItemPos);
this.checkAccessibleLabel();
},
setItemVisible: function(position, visible) {
this._menu.setItemVisible(position, visible);
},
_itemActivated: function(menuItem, event, position) {
this.setActiveItem(position);
this.emit('active-item-changed', position);
}
});
/* Basic implementation of a menu manager.
* Call addMenu to add menus
*/
const PopupMenuManager = new Lang.Class({
Name: 'PopupMenuManager',
_init: function(owner, grabParams) {
this._owner = owner;
this._grabHelper = new GrabHelper.GrabHelper(owner.actor, grabParams);
this._menus = [];
},
addMenu: function(menu, position) {
if (this._findMenu(menu) > -1)
return;
let menudata = {
menu: menu,
openStateChangeId: menu.connect('open-state-changed', Lang.bind(this, this._onMenuOpenState)),
childMenuAddedId: menu.connect('child-menu-added', Lang.bind(this, this._onChildMenuAdded)),
childMenuRemovedId: menu.connect('child-menu-removed', Lang.bind(this, this._onChildMenuRemoved)),
destroyId: menu.connect('destroy', Lang.bind(this, this._onMenuDestroy)),
enterId: 0,
focusInId: 0
};
let source = menu.sourceActor;
if (source) {
if (!menu.blockSourceEvents)
this._grabHelper.addActor(source);
menudata.enterId = source.connect('enter-event', Lang.bind(this, function() { this._onMenuSourceEnter(menu); }));
menudata.focusInId = source.connect('key-focus-in', Lang.bind(this, function() { this._onMenuSourceEnter(menu); }));
}
if (position == undefined)
this._menus.push(menudata);
else
this._menus.splice(position, 0, menudata);
},
removeMenu: function(menu) {
if (menu == this.activeMenu)
this._closeMenu(menu);
let position = this._findMenu(menu);
if (position == -1) // not a menu we manage
return;
let menudata = this._menus[position];
menu.disconnect(menudata.openStateChangeId);
menu.disconnect(menudata.childMenuAddedId);
menu.disconnect(menudata.childMenuRemovedId);
menu.disconnect(menudata.destroyId);
if (menudata.enterId)
menu.sourceActor.disconnect(menudata.enterId);
if (menudata.focusInId)
menu.sourceActor.disconnect(menudata.focusInId);
if (menu.sourceActor)
this._grabHelper.removeActor(menu.sourceActor);
this._menus.splice(position, 1);
},
get activeMenu() {
let firstGrab = this._grabHelper.grabStack[0];
if (firstGrab)
return firstGrab.actor._delegate;
else
return null;
},
ignoreRelease: function() {
return this._grabHelper.ignoreRelease();
},
_onMenuOpenState: function(menu, open) {
if (open) {
if (this.activeMenu && !this.activeMenu.isChildMenu(menu))
this.activeMenu.close(BoxPointer.PopupAnimation.FADE);
this._grabHelper.grab({ actor: menu.actor, modal: true, focus: menu.sourceActor,
onUngrab: Lang.bind(this, this._closeMenu, menu) });
} else {
this._grabHelper.ungrab({ actor: menu.actor });
}
},
_onChildMenuAdded: function(menu, childMenu) {
this.addMenu(childMenu);
},
_onChildMenuRemoved: function(menu, childMenu) {
this.removeMenu(childMenu);
},
_changeMenu: function(newMenu) {
newMenu.open(this.activeMenu ? BoxPointer.PopupAnimation.FADE
: BoxPointer.PopupAnimation.FULL);
},
_onMenuSourceEnter: function(menu) {
if (!this._grabHelper.grabbed)
return false;
if (this._grabHelper.isActorGrabbed(menu.actor))
return false;
let isChildMenu = this._grabHelper.grabStack.some(function(grab) {
let existingMenu = grab.actor._delegate;
return existingMenu.isChildMenu(menu);
});
if (isChildMenu)
return false;
this._changeMenu(menu);
return false;
},
_onMenuDestroy: function(menu) {
this.removeMenu(menu);
},
_findMenu: function(item) {
for (let i = 0; i < this._menus.length; i++) {
let menudata = this._menus[i];
if (item == menudata.menu)
return i;
}
return -1;
},
_closeMenu: function(isUser, menu) {
// If this isn't a user action, we called close()
// on the BoxPointer ourselves, so we shouldn't
// reanimate.
if (isUser)
menu.close(BoxPointer.PopupAnimation.FULL);
}
});