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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/* globals ContentAreaUtils */
const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Prompt",
"resource://gre/modules/Prompt.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "Messaging",
"resource://gre/modules/Messaging.jsm");
XPCOMUtils.defineLazyGetter(this, "ContentAreaUtils", function() {
let ContentAreaUtils = {};
Services.scriptloader.loadSubScript("chrome://global/content/contentAreaUtils.js", ContentAreaUtils);
return ContentAreaUtils;
});
this.EXPORTED_SYMBOLS = ["App","HelperApps"];
function App(data) {
this.name = data.name;
this.isDefault = data.isDefault;
this.packageName = data.packageName;
this.activityName = data.activityName;
this.iconUri = "-moz-icon://" + data.packageName;
}
App.prototype = {
// callback will be null if a result is not requested
launch: function(uri, callback) {
HelperApps._launchApp(this, uri, callback);
return false;
}
}
var HelperApps = {
get defaultBrowsers() {
delete this.defaultBrowsers;
this.defaultBrowsers = this._getHandlers("http://www.example.com", {
filterBrowsers: false,
filterHtml: false
});
return this.defaultBrowsers;
},
// Finds handlers that have registered for text/html pages or urls ending in html. Some apps, like
// the Samsung Video player will only appear for these urls, while some Browsers (like Link Bubble)
// won't register here because of the text/html mime type.
get defaultHtmlHandlers() {
delete this.defaultHtmlHandlers;
return this.defaultHtmlHandlers = this._getHandlers("http://www.example.com/index.html", {
filterBrowsers: false,
filterHtml: false
});
},
_getHandlers: function(url, options) {
let values = {};
let handlers = this.getAppsForUri(Services.io.newURI(url, null, null), options);
handlers.forEach(function(app) {
values[app.name] = app;
}, this);
return values;
},
get protoSvc() {
delete this.protoSvc;
return this.protoSvc = Cc["@mozilla.org/uriloader/external-protocol-service;1"].getService(Ci.nsIExternalProtocolService);
},
get urlHandlerService() {
delete this.urlHandlerService;
return this.urlHandlerService = Cc["@mozilla.org/uriloader/external-url-handler-service;1"].getService(Ci.nsIExternalURLHandlerService);
},
prompt: function showPicker(apps, promptOptions, callback) {
let p = new Prompt(promptOptions).addIconGrid({ items: apps });
p.show(callback);
},
getAppsForProtocol: function getAppsForProtocol(scheme) {
let protoHandlers = this.protoSvc.getProtocolHandlerInfoFromOS(scheme, {}).possibleApplicationHandlers;
let results = {};
for (let i = 0; i < protoHandlers.length; i++) {
try {
let protoApp = protoHandlers.queryElementAt(i, Ci.nsIHandlerApp);
results[protoApp.name] = new App({
name: protoApp.name,
description: protoApp.detailedDescription,
});
} catch(e) {}
}
return results;
},
getAppsForUri: function getAppsForUri(uri, flags = { }, callback) {
// Return early for well-known internal schemes
if (!uri || uri.schemeIs("about") || uri.schemeIs("chrome")) {
if (callback) {
callback([]);
}
return [];
}
flags.filterBrowsers = "filterBrowsers" in flags ? flags.filterBrowsers : true;
flags.filterHtml = "filterHtml" in flags ? flags.filterHtml : true;
// Query for apps that can/can't handle the mimetype
let msg = this._getMessage("Intent:GetHandlers", uri, flags);
let parseData = (d) => {
let apps = []
if (!d) {
return apps;
}
apps = this._parseApps(d.apps);
if (flags.filterBrowsers) {
apps = apps.filter((app) => {
return app.name && !this.defaultBrowsers[app.name];
});
}
// Some apps will register for html files (the Samsung Video player) but should be shown
// for non-HTML files (like videos). This filters them only if the page has an htm of html
// file extension.
if (flags.filterHtml) {
// Matches from the first '.' to the end of the string, '?', or '#'
let ext = /\.([^\?#]*)/.exec(uri.path);
if (ext && (ext[1] === "html" || ext[1] === "htm")) {
apps = apps.filter(function(app) {
return app.name && !this.defaultHtmlHandlers[app.name];
}, this);
}
}
return apps;
};
if (!callback) {
let data = this._sendMessageSync(msg);
return parseData(data);
} else {
Messaging.sendRequestForResult(msg).then(function(data) {
callback(parseData(data));
});
}
},
launchUri: function launchUri(uri) {
let msg = this._getMessage("Intent:Open", uri);
Messaging.sendRequest(msg);
},
_parseApps: function _parseApps(appInfo) {
// appInfo -> {apps: [app1Label, app1Default, app1PackageName, app1ActivityName, app2Label, app2Defaut, ...]}
// see GeckoAppShell.java getHandlersForIntent function for details
const numAttr = 4; // 4 elements per ResolveInfo: label, default, package name, activity name.
let apps = [];
for (let i = 0; i < appInfo.length; i += numAttr) {
apps.push(new App({"name" : appInfo[i],
"isDefault" : appInfo[i+1],
"packageName" : appInfo[i+2],
"activityName" : appInfo[i+3]}));
}
return apps;
},
_getMessage: function(type, uri, options = {}) {
let mimeType = options.mimeType;
if (uri && mimeType == undefined) {
mimeType = ContentAreaUtils.getMIMETypeForURI(uri) || "";
}
return {
type: type,
mime: mimeType,
action: options.action || "", // empty action string defaults to android.intent.action.VIEW
url: uri ? uri.spec : "",
packageName: options.packageName || "",
className: options.className || ""
};
},
_launchApp: function launchApp(app, uri, callback) {
if (callback) {
let msg = this._getMessage("Intent:OpenForResult", uri, {
packageName: app.packageName,
className: app.activityName
});
Messaging.sendRequestForResult(msg).then(callback);
} else {
let msg = this._getMessage("Intent:Open", uri, {
packageName: app.packageName,
className: app.activityName
});
Messaging.sendRequest(msg);
}
},
_sendMessageSync: function(msg) {
let res = null;
Messaging.sendRequestForResult(msg).then(function(data) {
res = data;
});
let thread = Services.tm.currentThread;
while (res == null) {
thread.processNextEvent(true);
}
return res;
},
};
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