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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Custom bindings for the notifications API.
var binding = require('binding').Binding.create('notifications');
var sendRequest = require('sendRequest').sendRequest;
var imageUtil = require('imageUtil');
var lastError = require('lastError');
var json = require('json');
function url_getter(context, key) {
var f = function() {
return this[key];
};
return f.bind(context);
}
function url_setter(context, key) {
var f = function(val) {
this[key] = val;
};
return f.bind(context);
}
function replaceNotificationOptionURLs(notification_details, callback) {
// A URL Spec is an object with the following keys:
// path: The resource to be downloaded.
// callback: A function to be called when the URL is complete. It
// should accept an ImageData object and set the appropriate
// field in the output of create.
// TODO(dewittj): Try to remove hard-coding.
// |iconUrl| is required.
var url_specs = [{
path: notification_details.iconUrl,
width: 80,
height: 80,
callback: url_setter(notification_details, 'iconUrl')
}];
// |secondIconUrl| is optional.
if (notification_details.secondIconUrl) {
url_specs.push({
path: notification_details.secondIconUrl,
width: 80,
height: 80,
callback: url_setter(notification_details, 'secondIconUrl')
});
}
// |imageUrl| is optional.
if (notification_details.imageUrl) {
url_specs.push({
path: notification_details.imageUrl,
width: 300,
height: 300,
callback: url_setter(notification_details, 'imageUrl')
});
}
// Each button has an optional icon.
var button_list = notification_details.buttons;
if (button_list && typeof button_list.length === 'number') {
var num_buttons = button_list.length;
for (var i = 0; i < num_buttons; i++) {
if (button_list[i].iconUrl) {
url_specs.push({
path: button_list[i].iconUrl,
width: 16,
height: 16,
callback: url_setter(button_list[i], 'iconUrl')
});
}
}
}
var errors = 0;
imageUtil.loadAllImages(url_specs, {
onerror: function(index) {
errors++;
},
oncomplete: function(imageData) {
if (errors > 0) {
callback(false);
return;
}
for (var index = 0; index < url_specs.length; index++) {
var url_spec = url_specs[index];
url_spec.callback(imageData[index]);
}
callback(true);
}
});
}
function genHandle(failure_function) {
return function(id, input_notification_details, callback) {
// TODO(dewittj): Remove this hack. This is used as a way to deep
// copy a complex JSON object.
var notification_details = json.parse(
json.stringify(input_notification_details));
var that = this;
replaceNotificationOptionURLs(notification_details, function(success) {
if (success) {
sendRequest(that.name,
[id, notification_details, callback],
that.definition.parameters);
return;
}
// TODO(kalman): This is probably wrong, failure_function is created in
// this context but it should be created in the caller's context. I just
// don't know where that is.
lastError.run('Unable to download all specified images.',
failure_function, [callback, id]);
});
};
}
var handleCreate = genHandle(function(callback, id) { callback(id); });
var handleUpdate = genHandle(function(callback, id) { callback(false); });
var notificationsCustomHook = function(bindingsAPI, extensionId) {
var apiFunctions = bindingsAPI.apiFunctions;
apiFunctions.setHandleRequest('create', handleCreate);
apiFunctions.setHandleRequest('update', handleCreate);
};
binding.registerCustomHook(notificationsCustomHook);
exports.binding = binding.generate();
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