119 lines
3.1 KiB
JavaScript
119 lines
3.1 KiB
JavaScript
/**!
|
|
* Google Drive File Picker Example
|
|
* By Daniel Lo Nigro (http://dan.cx/)
|
|
*/
|
|
(function() {
|
|
/**
|
|
* Initialise a Google Driver file picker
|
|
*/
|
|
var FilePicker = window.FilePicker = function(options) {
|
|
// Config
|
|
this.apiKey = options.apiKey;
|
|
this.clientId = options.clientId;
|
|
|
|
// Elements
|
|
this.buttonEl = options.buttonEl;
|
|
|
|
// Events
|
|
this.onSelect = options.onSelect;
|
|
this.buttonEl.on('click', this.open.bind(this));
|
|
|
|
// Disable the button until the API loads, as it won't work properly until then.
|
|
this.buttonEl.prop('disabled', true);
|
|
|
|
// Load the drive API
|
|
gapi.client.setApiKey(this.apiKey);
|
|
gapi.client.load('drive', 'v2', this._driveApiLoaded.bind(this));
|
|
google.load('picker', '1', { callback: this._pickerApiLoaded.bind(this) });
|
|
}
|
|
|
|
FilePicker.prototype = {
|
|
/**
|
|
* Open the file picker.
|
|
*/
|
|
open: function() {
|
|
// Check if the user has already authenticated
|
|
var token = gapi.auth.getToken();
|
|
if (token) {
|
|
this._showPicker();
|
|
} else {
|
|
// The user has not yet authenticated with Google
|
|
// We need to do the authentication before displaying the Drive picker.
|
|
this._doAuth(false, function() { this._showPicker(); }.bind(this));
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Show the file picker once authentication has been done.
|
|
* @private
|
|
*/
|
|
_showPicker: function() {
|
|
var accessToken = gapi.auth.getToken().access_token;
|
|
var view = new google.picker.DocsView();
|
|
view.setMimeTypes("text/markdown,text/html");
|
|
view.setIncludeFolders(true);
|
|
view.setOwnedByMe(true);
|
|
this.picker = new google.picker.PickerBuilder().
|
|
enableFeature(google.picker.Feature.NAV_HIDDEN).
|
|
addView(view).
|
|
setAppId(this.clientId).
|
|
setOAuthToken(accessToken).
|
|
setCallback(this._pickerCallback.bind(this)).
|
|
build().
|
|
setVisible(true);
|
|
},
|
|
|
|
/**
|
|
* Called when a file has been selected in the Google Drive file picker.
|
|
* @private
|
|
*/
|
|
_pickerCallback: function(data) {
|
|
if (data[google.picker.Response.ACTION] == google.picker.Action.PICKED) {
|
|
var file = data[google.picker.Response.DOCUMENTS][0],
|
|
id = file[google.picker.Document.ID],
|
|
request = gapi.client.drive.files.get({
|
|
fileId: id
|
|
});
|
|
|
|
request.execute(this._fileGetCallback.bind(this));
|
|
}
|
|
},
|
|
/**
|
|
* Called when file details have been retrieved from Google Drive.
|
|
* @private
|
|
*/
|
|
_fileGetCallback: function(file) {
|
|
if (this.onSelect) {
|
|
this.onSelect(file);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called when the Google Drive file picker API has finished loading.
|
|
* @private
|
|
*/
|
|
_pickerApiLoaded: function() {
|
|
this.buttonEl.prop('disabled', false);
|
|
},
|
|
|
|
/**
|
|
* Called when the Google Drive API has finished loading.
|
|
* @private
|
|
*/
|
|
_driveApiLoaded: function() {
|
|
this._doAuth(true);
|
|
},
|
|
|
|
/**
|
|
* Authenticate with Google Drive via the Google JavaScript API.
|
|
* @private
|
|
*/
|
|
_doAuth: function(immediate, callback) {
|
|
gapi.auth.authorize({
|
|
client_id: this.clientId,
|
|
scope: 'https://www.googleapis.com/auth/drive.readonly',
|
|
immediate: immediate
|
|
}, callback ? callback : function() {});
|
|
}
|
|
};
|
|
}());
|