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// Copyright (c) 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 downloads API.
var binding = require('binding').Binding.create('downloads');
var downloadsInternal = require('binding').Binding.create(
'downloadsInternal').generate();
var eventBindings = require('event_bindings');
eventBindings.registerArgumentMassager(
'downloads.onDeterminingFilename',
function massage_determining_filename(args, dispatch) {
var downloadItem = args[0];
// Copy the id so that extensions can't change it.
var downloadId = downloadItem.id;
var suggestable = true;
function isValidResult(result) {
if (result === undefined)
return false;
if (typeof(result) != 'object') {
console.error('Error: Invocation of form suggest(' + typeof(result) +
') doesn\'t match definition suggest({filename: string, ' +
'conflictAction: string})');
return false;
} else if ((typeof(result.filename) != 'string') ||
(result.filename.length == 0)) {
console.error('Error: "filename" parameter to suggest() must be a ' +
'non-empty string');
return false;
} else if ([undefined, 'uniquify', 'overwrite', 'prompt'].indexOf(
result.conflictAction) < 0) {
console.error('Error: "conflictAction" parameter to suggest() must be ' +
'one of undefined, "uniquify", "overwrite", "prompt"');
return false;
}
return true;
}
function suggestCallback(result) {
if (!suggestable) {
console.error('suggestCallback may not be called more than once.');
return;
}
suggestable = false;
if (isValidResult(result)) {
downloadsInternal.determineFilename(
downloadId, result.filename, result.conflictAction || "");
} else {
downloadsInternal.determineFilename(downloadId, "", "");
}
}
try {
var results = dispatch([downloadItem, suggestCallback]);
var async = (results &&
results.results &&
(results.results.length != 0) &&
(results.results[0] === true));
if (suggestable && !async)
suggestCallback();
} catch (e) {
suggestCallback();
throw e;
}
});
exports.binding = binding.generate();
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