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@ -1,3 +1,29 @@
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/* |
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* ThemeUtils.js |
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* |
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* Copyright © 2021 JezerM |
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* |
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* This file is part of Web Greeter. |
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* |
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* Web Greeter is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* Web Greeter is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* The following additional terms are in effect as per Section 7 of the license: |
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* |
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* The preservation of all legal notices and author attributions in |
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* the material or in the Appropriate Legal Notices displayed |
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* by works containing it is required. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with web-greeter; If not, see <http://www.gnu.org/licenses/>.
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*/ |
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class LightDMLanguage { |
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constructor( {code, name, territory} ) { |
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this.code = code; |
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@ -793,8 +819,72 @@ class ThemeUtils {
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return context; |
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} |
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dirlist(path, noDir, callback) { |
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callback([]) |
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/** |
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* Returns the contents of directory found at `path` provided that the (normalized) `path` |
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* meets at least one of the following conditions: |
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* * Is located within the greeter themes' root directory. |
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* * Has been explicitly allowed in the greeter's config file. |
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* * Is located within the greeter's shared data directory (`/var/lib/lightdm-data`). |
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* * Is located in `/tmp`. |
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* |
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* @param {String} path The abs path to desired directory. |
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* @param {Boolean} only_images Include only images in the results. Default `true`. |
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* @param {function(String[])} callback Callback function to be called with the result. |
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*/ |
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dirlist( path, only_images = true, callback ) { |
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if ( '' === path || 'string' !== typeof path ) { |
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console.error(`theme_utils.dirlist(): path must be a non-empty string!`); |
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return callback([]); |
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} else if ( null !== path.match(/^[^/].+/) ) { |
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console.error(`theme_utils.dirlist(): path must be absolute!`); |
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return callback([]); |
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} |
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if ( null !== path.match(/\/\.+(?=\/)/) ) { |
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// No special directory names allowed (eg ../../)
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path = path.replace(/\/\.+(?=\/)/g, '' ); |
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} |
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try { |
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return callback([]) |
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} catch( err ) { |
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console.error(`theme_utils.dirlist(): ${err}`); |
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return callback([]); |
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} |
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} |
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/** |
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* Binds `this` to class, `context`, for all of the class's methods. |
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* |
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* @param {Object} context An ES6 class instance with at least one method. |
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* |
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* @return {Object} `context` with `this` bound to it for all of its methods. |
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*/ |
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bind_this( context ) { |
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let excluded_methods = ['constructor']; |
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function not_excluded( _method, _context ) { |
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let is_excluded = excluded_methods.findIndex( excluded_method => _method === excluded_method ) > -1, |
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is_method = 'function' === typeof _context[_method]; |
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return is_method && !is_excluded; |
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} |
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for ( let obj = context; obj; obj = Object.getPrototypeOf( obj ) ) { |
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// Stop once we have traveled all the way up the inheritance chain
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if ( 'Object' === obj.constructor.name ) { |
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break; |
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} |
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for ( let method of Object.getOwnPropertyNames( obj ) ) { |
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if ( not_excluded( method, context ) ) { |
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context[method] = context[method].bind( context ); |
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} |
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} |
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} |
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return context; |
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} |
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/** |
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