gecko/mobile/android/components/HelperAppDialog.js

196 lines
6.7 KiB
JavaScript

// -*- Mode: js2; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
/* 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/. */
const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
const PREF_BD_USEDOWNLOADDIR = "browser.download.useDownloadDir";
const URI_GENERIC_ICON_DOWNLOAD = "drawable://alert_download";
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/Prompt.jsm");
Cu.import("resource://gre/modules/HelperApps.jsm");
// -----------------------------------------------------------------------
// HelperApp Launcher Dialog
// -----------------------------------------------------------------------
function HelperAppLauncherDialog() { }
HelperAppLauncherDialog.prototype = {
classID: Components.ID("{e9d277a0-268a-4ec2-bb8c-10fdf3e44611}"),
QueryInterface: XPCOMUtils.generateQI([Ci.nsIHelperAppLauncherDialog]),
show: function hald_show(aLauncher, aContext, aReason) {
let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
let defaultHandler = new Object();
let apps = HelperApps.getAppsForUri(aLauncher.source, {
mimeType: aLauncher.MIMEInfo.MIMEType,
});
// Add a fake intent for save to disk at the top of the list
apps.unshift({
name: bundle.GetStringFromName("helperapps.saveToDisk"),
packageName: "org.mozilla.gecko.Download",
iconUri: "drawable://icon",
launch: function() {
// Reset the preferredAction here
aLauncher.MIMEInfo.preferredAction = Ci.nsIMIMEInfo.saveToDisk;
aLauncher.saveToDisk(null, false);
return true;
}
});
// See if the user already marked something as the default for this mimetype,
// and if that app is still installed.
let preferredApp = this._getPreferredApp(aLauncher);
if (preferredApp) {
let pref = apps.filter(function(app) {
return app.packageName === preferredApp;
});
if (pref.length > 0) {
pref[0].launch(aLauncher.source);
return;
}
}
let callback = function(app) {
aLauncher.MIMEInfo.preferredAction = Ci.nsIMIMEInfo.useHelperApp;
if (!app.launch(aLauncher.source)) {
aLauncher.cancel(Cr.NS_BINDING_ABORTED);
}
}
if (apps.length > 1) {
HelperApps.prompt(apps, {
title: bundle.GetStringFromName("helperapps.pick"),
buttons: [
bundle.GetStringFromName("helperapps.alwaysUse"),
bundle.GetStringFromName("helperapps.useJustOnce")
]
}, (data) => {
if (data.button < 0)
return;
callback(apps[data.icongrid0]);
if (data.button == 0)
this._setPreferredApp(aLauncher, apps[data.icongrid0]);
});
} else {
callback(apps[0]);
}
},
_getPrefName: function getPrefName(mimetype) {
return "browser.download.preferred." + mimetype.replace("\\", ".");
},
_getMimeTypeFromLauncher: function getMimeTypeFromLauncher(launcher) {
let mime = launcher.MIMEInfo.MIMEType;
if (!mime)
mime = ContentAreaUtils.getMIMETypeForURI(launcher.source) || "";
return mime;
},
_getPreferredApp: function getPreferredApp(launcher) {
let mime = this._getMimeTypeFromLauncher(launcher);
if (!mime)
return;
try {
return Services.prefs.getCharPref(this._getPrefName(mime));
} catch(ex) {
Services.console.logStringMessage("Error getting pref for " + mime + " " + ex);
}
return null;
},
_setPreferredApp: function setPreferredApp(launcher, app) {
let mime = this._getMimeTypeFromLauncher(launcher);
if (!mime)
return;
if (app)
Services.prefs.setCharPref(this._getPrefName(mime), app.packageName);
else
Services.prefs.clearUserPref(this._getPrefName(mime));
},
promptForSaveToFile: function hald_promptForSaveToFile(aLauncher, aContext, aDefaultFile, aSuggestedFileExt, aForcePrompt) {
// Retrieve the user's default download directory
let dnldMgr = Cc["@mozilla.org/download-manager;1"].getService(Ci.nsIDownloadManager);
let defaultFolder = dnldMgr.userDownloadsDirectory;
try {
file = this.validateLeafName(defaultFolder, aDefaultFile, aSuggestedFileExt);
} catch (e) { }
return file;
},
validateLeafName: function hald_validateLeafName(aLocalFile, aLeafName, aFileExt) {
if (!(aLocalFile && this.isUsableDirectory(aLocalFile)))
return null;
// Remove any leading periods, since we don't want to save hidden files
// automatically.
aLeafName = aLeafName.replace(/^\.+/, "");
if (aLeafName == "")
aLeafName = "unnamed" + (aFileExt ? "." + aFileExt : "");
aLocalFile.append(aLeafName);
this.makeFileUnique(aLocalFile);
return aLocalFile;
},
makeFileUnique: function hald_makeFileUnique(aLocalFile) {
try {
// Note - this code is identical to that in
// toolkit/content/contentAreaUtils.js.
// If you are updating this code, update that code too! We can't share code
// here since this is called in a js component.
let collisionCount = 0;
while (aLocalFile.exists()) {
collisionCount++;
if (collisionCount == 1) {
// Append "(2)" before the last dot in (or at the end of) the filename
// special case .ext.gz etc files so we don't wind up with .tar(2).gz
if (aLocalFile.leafName.match(/\.[^\.]{1,3}\.(gz|bz2|Z)$/i))
aLocalFile.leafName = aLocalFile.leafName.replace(/\.[^\.]{1,3}\.(gz|bz2|Z)$/i, "(2)$&");
else
aLocalFile.leafName = aLocalFile.leafName.replace(/(\.[^\.]*)?$/, "(2)$&");
}
else {
// replace the last (n) in the filename with (n+1)
aLocalFile.leafName = aLocalFile.leafName.replace(/^(.*\()\d+\)/, "$1" + (collisionCount+1) + ")");
}
}
aLocalFile.create(Ci.nsIFile.NORMAL_FILE_TYPE, 0600);
}
catch (e) {
dump("*** exception in validateLeafName: " + e + "\n");
if (e.result == Cr.NS_ERROR_FILE_ACCESS_DENIED)
throw e;
if (aLocalFile.leafName == "" || aLocalFile.isDirectory()) {
aLocalFile.append("unnamed");
if (aLocalFile.exists())
aLocalFile.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0600);
}
}
},
isUsableDirectory: function hald_isUsableDirectory(aDirectory) {
return aDirectory.exists() && aDirectory.isDirectory() && aDirectory.isWritable();
},
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([HelperAppLauncherDialog]);