summaryrefslogtreecommitdiff
path: root/includes/resourceloader/ResourceLoaderStartUpModule.php
blob: 32cf6b2673dece833d659bb7e1446734be4943a8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
<?php
/**
 * Module for resource loader initialization.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @author Trevor Parscal
 * @author Roan Kattouw
 */

class ResourceLoaderStartUpModule extends ResourceLoaderModule {

	/* Protected Members */

	protected $modifiedTime = array();

	/* Protected Methods */

	/**
	 * @param $context ResourceLoaderContext
	 * @return array
	 */
	protected function getConfig( $context ) {
		global $wgLoadScript, $wgScript, $wgStylePath, $wgScriptExtension,
			$wgArticlePath, $wgScriptPath, $wgServer, $wgContLang,
			$wgVariantArticlePath, $wgActionPaths, $wgVersion,
			$wgEnableAPI, $wgEnableWriteAPI, $wgDBname,
			$wgSitename, $wgFileExtensions, $wgExtensionAssetsPath,
			$wgCookiePrefix, $wgResourceLoaderMaxQueryLength;

		$mainPage = Title::newMainPage();

		/**
		 * Namespace related preparation
		 * - wgNamespaceIds: Key-value pairs of all localized, canonical and aliases for namespaces.
		 * - wgCaseSensitiveNamespaces: Array of namespaces that are case-sensitive.
		 */
		$namespaceIds = $wgContLang->getNamespaceIds();
		$caseSensitiveNamespaces = array();
		foreach( MWNamespace::getCanonicalNamespaces() as $index => $name ) {
			$namespaceIds[$wgContLang->lc( $name )] = $index;
			if ( !MWNamespace::isCapitalized( $index ) ) {
				$caseSensitiveNamespaces[] = $index;
			}
		}

		// Build list of variables
		$vars = array(
			'wgLoadScript' => $wgLoadScript,
			'debug' => $context->getDebug(),
			'skin' => $context->getSkin(),
			'stylepath' => $wgStylePath,
			'wgUrlProtocols' => wfUrlProtocols(),
			'wgArticlePath' => $wgArticlePath,
			'wgScriptPath' => $wgScriptPath,
			'wgScriptExtension' => $wgScriptExtension,
			'wgScript' => $wgScript,
			'wgVariantArticlePath' => $wgVariantArticlePath,
			// Force object to avoid "empty" associative array from
			// becoming [] instead of {} in JS (bug 34604)
			'wgActionPaths' => (object)$wgActionPaths,
			'wgServer' => $wgServer,
			'wgUserLanguage' => $context->getLanguage(),
			'wgContentLanguage' => $wgContLang->getCode(),
			'wgVersion' => $wgVersion,
			'wgEnableAPI' => $wgEnableAPI,
			'wgEnableWriteAPI' => $wgEnableWriteAPI,
			'wgMainPageTitle' => $mainPage->getPrefixedText(),
			'wgFormattedNamespaces' => $wgContLang->getFormattedNamespaces(),
			'wgNamespaceIds' => $namespaceIds,
			'wgSiteName' => $wgSitename,
			'wgFileExtensions' => array_values( $wgFileExtensions ),
			'wgDBname' => $wgDBname,
			// This sucks, it is only needed on Special:Upload, but I could
			// not find a way to add vars only for a certain module
			'wgFileCanRotate' => BitmapHandler::canRotate(),
			'wgAvailableSkins' => Skin::getSkinNames(),
			'wgExtensionAssetsPath' => $wgExtensionAssetsPath,
			// MediaWiki sets cookies to have this prefix by default
			'wgCookiePrefix' => $wgCookiePrefix,
			'wgResourceLoaderMaxQueryLength' => $wgResourceLoaderMaxQueryLength,
			'wgCaseSensitiveNamespaces' => $caseSensitiveNamespaces,
		);

		wfRunHooks( 'ResourceLoaderGetConfigVars', array( &$vars ) );

		return $vars;
	}

	/**
	 * Gets registration code for all modules
	 *
	 * @param $context ResourceLoaderContext object
	 * @return String: JavaScript code for registering all modules with the client loader
	 */
	public static function getModuleRegistrations( ResourceLoaderContext $context ) {
		global $wgCacheEpoch;
		wfProfileIn( __METHOD__ );

		$out = '';
		$registrations = array();
		$resourceLoader = $context->getResourceLoader();
		$target = $context->getRequest()->getVal( 'target', 'desktop' );

		// Register sources
		$out .= ResourceLoader::makeLoaderSourcesScript( $resourceLoader->getSources() );

		// Register modules
		foreach ( $resourceLoader->getModuleNames() as $name ) {
			$module = $resourceLoader->getModule( $name );
			$moduleTargets = $module->getTargets();
			if ( !in_array( $target, $moduleTargets ) ) {
				continue;
			}
			$deps = $module->getDependencies();
			$group = $module->getGroup();
			$source = $module->getSource();
			// Support module loader scripts
			$loader = $module->getLoaderScript();
			if ( $loader !== false ) {
				$version = wfTimestamp( TS_ISO_8601_BASIC,
					$module->getModifiedTime( $context ) );
				$out .= ResourceLoader::makeCustomLoaderScript( $name, $version, $deps, $group, $source, $loader );
				continue;
			}

			// Automatically register module
			// getModifiedTime() is supposed to return a UNIX timestamp, but it doesn't always
			// seem to do that, and custom implementations might forget. Coerce it to TS_UNIX
			$moduleMtime = wfTimestamp( TS_UNIX, $module->getModifiedTime( $context ) );
			$mtime = max( $moduleMtime, wfTimestamp( TS_UNIX, $wgCacheEpoch ) );
			// Modules without dependencies, a group or a foreign source pass two arguments (name, timestamp) to
			// mw.loader.register()
			if ( !count( $deps ) && $group === null && $source === 'local' ) {
				$registrations[] = array( $name, $mtime );
			}
			// Modules with dependencies but no group or foreign source pass three arguments
			// (name, timestamp, dependencies) to mw.loader.register()
			elseif ( $group === null && $source === 'local' ) {
				$registrations[] = array( $name, $mtime, $deps );
			}
			// Modules with a group but no foreign source pass four arguments (name, timestamp, dependencies, group)
			// to mw.loader.register()
			elseif ( $source === 'local' ) {
				$registrations[] = array( $name, $mtime, $deps, $group );
			}
			// Modules with a foreign source pass five arguments (name, timestamp, dependencies, group, source)
			// to mw.loader.register()
			else {
				$registrations[] = array( $name, $mtime, $deps, $group, $source );
			}
		}
		$out .= ResourceLoader::makeLoaderRegisterScript( $registrations );

		wfProfileOut( __METHOD__ );
		return $out;
	}

	/* Methods */

	/**
	 * @return bool
	 */
	public function isRaw() {
		return true;
	}

	/**
	 * @param $context ResourceLoaderContext
	 * @return string
	 */
	public function getScript( ResourceLoaderContext $context ) {
		global $IP, $wgLoadScript, $wgLegacyJavaScriptGlobals;

		$out = file_get_contents( "$IP/resources/startup.js" );
		if ( $context->getOnly() === 'scripts' ) {

			// The core modules:
			$moduleNames = array( 'jquery', 'mediawiki' );
			wfRunHooks( 'ResourceLoaderGetStartupModules', array( &$moduleNames ) );

			// Get the latest version
			$loader = $context->getResourceLoader();
			$version = 0;
			foreach ( $moduleNames as $moduleName ) {
				$version = max( $version,
					$loader->getModule( $moduleName )->getModifiedTime( $context )
				);
			}
			// Build load query for StartupModules
			$query = array(
				'modules' => ResourceLoader::makePackedModulesString( $moduleNames ),
				'only' => 'scripts',
				'lang' => $context->getLanguage(),
				'skin' => $context->getSkin(),
				'debug' => $context->getDebug() ? 'true' : 'false',
				'version' => wfTimestamp( TS_ISO_8601_BASIC, $version )
			);
			// Ensure uniform query order
			ksort( $query );

			// Startup function
			$configuration = $this->getConfig( $context );
			$registrations = self::getModuleRegistrations( $context );
			$registrations = str_replace( "\n", "\n\t", trim( $registrations ) ); // fix indentation
			$out .= "var startUp = function() {\n" .
				"\tmw.config = new " . Xml::encodeJsCall( 'mw.Map', array( $wgLegacyJavaScriptGlobals ) ) . "\n" .
				"\t$registrations\n" .
				"\t" . Xml::encodeJsCall( 'mw.config.set', array( $configuration ) ) .
				"};\n";

			// Conditional script injection
			$scriptTag = Html::linkedScript( $wgLoadScript . '?' . wfArrayToCgi( $query ) );
			$out .= "if ( isCompatible() ) {\n" .
				"\t" . Xml::encodeJsCall( 'document.write', array( $scriptTag ) ) .
				"}\n" .
				"delete isCompatible;";
		}

		return $out;
	}

	/**
	 * @return bool
	 */
	public function supportsURLLoading() {
		return false;
	}

	/**
	 * @param $context ResourceLoaderContext
	 * @return array|mixed
	 */
	public function getModifiedTime( ResourceLoaderContext $context ) {
		global $IP, $wgCacheEpoch;

		$hash = $context->getHash();
		if ( isset( $this->modifiedTime[$hash] ) ) {
			return $this->modifiedTime[$hash];
		}

		// Call preloadModuleInfo() on ALL modules as we're about
		// to call getModifiedTime() on all of them
		$loader = $context->getResourceLoader();
		$loader->preloadModuleInfo( $loader->getModuleNames(), $context );

		$this->modifiedTime[$hash] = filemtime( "$IP/resources/startup.js" );
		// ATTENTION!: Because of the line above, this is not going to cause
		// infinite recursion - think carefully before making changes to this
		// code!
		$time = wfTimestamp( TS_UNIX, $wgCacheEpoch );
		foreach ( $loader->getModuleNames() as $name ) {
			$module = $loader->getModule( $name );
			$time = max( $time, $module->getModifiedTime( $context ) );
		}
		return $this->modifiedTime[$hash] = $time;
	}

	/* Methods */

	/**
	 * @return string
	 */
	public function getGroup() {
		return 'startup';
	}
}