b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
128 lines
2.9 KiB
JavaScript
Executable file
128 lines
2.9 KiB
JavaScript
Executable file
define(function(require, exports, module) {
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'use strict';
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/**
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* Dependencies
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*/
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var debug = require('debug')('controller:overlay');
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var bindAll = require('lib/bind-all');
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/**
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* Exports
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*/
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module.exports = function(app) { return new OverlayController(app); };
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module.exports.OverlayController = OverlayController;
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/**
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* Initialize a new `OverlayController`
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*
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* @param {App} app
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*/
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function OverlayController(app) {
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bindAll(this);
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this.overlays = {};
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this.app = app;
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this.require = app.require;
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this.activity = app.activity;
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this.bindEvents();
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debug('initialized');
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}
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OverlayController.prototype.bindEvents = function() {
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this.app.on('storage:changed', this.onStorageChanged);
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this.app.on('change:batteryStatus', this.onBatteryChanged);
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this.app.on('camera:requesting', this.onCameraRequesting);
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this.app.on('camera:error', this.onCameraError);
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};
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/**
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* Respond to storage `statechange`
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* events by inserting or destroying
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* overlays from the app.
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*
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* @param {String} value ['nospace'|'shared'|'unavailable'|'available']
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*/
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OverlayController.prototype.onStorageChanged = function(state) {
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this.updateOverlay('storage', state !== 'available', state);
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};
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/**
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* Respond to battery `statuschange`
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* events by inserting or destroying
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* overlays from the app.
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*
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* @param {String} status ['shutdown'|'critical'|'verylow'|'low']
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*/
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OverlayController.prototype.onBatteryChanged = function(state) {
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this.updateOverlay('battery', state === 'shutdown', state);
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};
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/**
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* Respond to camera `requesting`
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* events by destroying overlays
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* from the app.
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*
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* @param {String} state ['start'|'success'|'fail']
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*/
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OverlayController.prototype.onCameraRequesting = function() {
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this.updateOverlay('cameraError', false);
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};
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/**
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* Respond to camera `error`
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* events by inserting overlays
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* into the app.
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*
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* @param {String} state ['start'|'success'|'fail']
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*/
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OverlayController.prototype.onCameraError = function(type) {
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this.updateOverlay('cameraError', true, type);
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};
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OverlayController.prototype.updateOverlay = function(type, enabled, reason) {
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debug('\'%s/%s\' overlay %s', type, reason, enabled);
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var overlay = this.overlays[type];
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if (!overlay) {
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overlay = this.overlays[type] = {
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id: 0,
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};
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}
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if (overlay.view) {
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overlay.view.destroy();
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delete overlay.view;
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}
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var id = ++overlay.id;
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if (!enabled) {
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return;
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}
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var self = this;
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this.require(['views/overlay'], function(OverlayView) {
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if (id !== overlay.id) {
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return;
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}
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var closable = self.activity.pick && type !== 'request-fail';
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var view = new OverlayView({
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type: reason,
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closable: closable,
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});
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if (!view.rendered()) {
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return;
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}
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overlay.view = view.appendTo(document.body)
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.on('click:close-btn', function() {
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self.app.emit('activitycanceled');
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});
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debug('inserted \'%s/%s\' overlay', type, reason);
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});
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};
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});
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