diff --git a/lib/ajax/ajaxlib.php b/lib/ajax/ajaxlib.php index 69cd9a6c497..ca932e4dc68 100644 --- a/lib/ajax/ajaxlib.php +++ b/lib/ajax/ajaxlib.php @@ -26,8 +26,8 @@ /** - * Initialise a page_requirements_manager with the bits of JavaScript that every - * Moodle page needs. + * Initialise a {@link page_requirements_manager} with the bits of JavaScript that every + * Moodle page should have. * * @param page_requirements_manager $requires The page_requirements_manager to initialise. */ @@ -55,7 +55,7 @@ function setup_core_javascript(page_requirements_manager $requires) { // Note that, as a short-cut, the code // $js = "document.body.className += ' jsenabled';\n"; - // is hard-coded in @see{page_requirements_manager::get_top_of_body_code}. + // is hard-coded in {@link page_requirements_manager::get_top_of_body_code) } @@ -73,6 +73,10 @@ function setup_core_javascript(page_requirements_manager $requires) { * $PAGE->requires->js_function_call('init_mymod', array($data))->on_dom_ready(); * * + * There are some natural restrictions on some methods. For example, {@link css()} + * can only be called before the tag is output. See the comments on the + * individual methods for details. + * * @copyright 2009 Tim Hunt * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ @@ -92,8 +96,9 @@ class page_requirements_manager { protected $topofbodydone = false; /** - * Ensure that the specified script file is linked to from this page. By default - * the link is put at the end of the page, since this gives best load performance. + * Ensure that the specified JavaScript file is linked to from this page. + * + * By default the link is put at the end of the page, since this gives best page-load performance. * * Even if a particular script is requested more than once, it will only be linked * to once. @@ -106,9 +111,9 @@ class page_requirements_manager { * do this. This really should only be done in exceptional circumstances. This * may change in the future without warning. * (If true, $jsfile is treaded as a full URL, not relative $CFG->wwwroot.) - * @return required_js A required_js object. This allows you to control when the - * link to the script is output by calling methods like ->asap() or - * ->in_head(). + * @return required_js The required_js object. This allows you to control when the + * link to the script is output by calling methods like {@link required_js::asap()} or + * {@link required_js::in_head()}. */ public function js($jsfile, $fullurl = false) { global $CFG; @@ -128,23 +133,24 @@ class page_requirements_manager { /** * Ensure that the specified YUI library file, and all its required dependancies, - * are linked to from this page. By default the link is put at the end of the - * page, since this gives best load performance. Optional dependencies are not - * loaded automatically - if you want them you will need to load them first with - * other calls to this method. + * are linked to from this page. + * + * By default the link is put at the end of the page, since this gives best page-load + * performance. Optional dependencies are not loaded automatically - if you want + * them you will need to load them first with other calls to this method. * * If the YUI library you ask for requires one or more CSS files, and if - * <head> has already been printed, then an exception will be thrown. + * has already been printed, then an exception will be thrown. * Therefore, you are strongly advised to request all the YUI libraries you - * will need before the call to print_header. + * will need before output is started. * * Even if a particular library is requested more than once (perhaps as a dependancy * of other libraries) it will only be linked to once. * * @param $libname the name of the YUI library you require. For example 'autocomplete'. * @return required_yui_lib A requried_yui_lib object. This allows you to control when the - * link to the script is output by calling methods like ->asap() or - * ->in_head(). + * link to the script is output by calling methods like {@link required_yui_lib::asap()} or + * {@link required_yui_lib::in_head()}. */ public function yui_lib($libname) { $key = 'yui:' . $libname; @@ -155,9 +161,10 @@ class page_requirements_manager { } /** - * Ensure that the specified CSS file is linked to from this page. Because - * stylesheet links must go in the <head> part of the HTML, you must call - * this function before get_head_code is called. That normally means before + * Ensure that the specified CSS file is linked to from this page. + * + * Because stylesheet links must go in the part of the HTML, you must call + * this function before {@link get_head_code()} is called. That normally means before * the call to print_header. If you call it when it is too late, an exception * will be thrown. * @@ -190,12 +197,13 @@ class page_requirements_manager { } /** - * Ensure that a skip link to a given target is printed at the top of the <body>. - * You must call this function before get_top_of_body_code, (if not, an exception + * Ensure that a skip link to a given target is printed at the top of the . + * + * You must call this function before {@link get_top_of_body_code()}, (if not, an exception * will be thrown). That normally means you must call this before the call to print_header. * * If you ask for a particular skip link to be printed, it is then your responsibility - * to ensure that the appropraite <a name="..."> tag is printed in the body of the + * to ensure that the appropraite tag is printed in the body of the * page, so that the skip link goes somewhere. * * Even if a particular skip link is requested more than once, only one copy of it will be output. @@ -211,7 +219,9 @@ class page_requirements_manager { /** * Ensure that the specified JavaScript function is called from an inline script - * somewhere on this page. By default the call will be put in a script tag at the + * somewhere on this page. + * + * By default the call will be put in a script tag at the * end of the page, since this gives best page-load performance. * * If you request that a particular function is called several times, then @@ -224,10 +234,12 @@ class page_requirements_manager { * @param array $arguments and array of arguments to be passed to the function. * When generating the function call, this will be escaped using json_encode, * so passing objects and arrays should work. - * @return required_js_function_call A required_js_function_call object. + * @return required_js_function_call The required_js_function_call object. * This allows you to control when the link to the script is output by - * calling methods like ->asap(), ->in_head(), ->at_top_of_body(), - * ->on_dom_ready() or ->after_delay() methods. + * calling methods like {@link required_js_function_call::in_head()}, + * {@link required_js_function_call::at_top_of_body()}, + * {@link required_js_function_call::on_dom_ready()} or + * {@link required_js_function_call::after_delay()} methods. */ public function js_function_call($function, $arguments = array()) { $requirement = new required_js_function_call($this, $function, $arguments); @@ -236,9 +248,10 @@ class page_requirements_manager { } /** - * Make a language string available to JavaScript. All the strings will be - * available in a mstr object in the global namespace. So, for example, - * after a call to $PAGE->requires->string_for_js('course', 'moodle'); + * Make a language string available to JavaScript. + * + * All the strings will be available in a mstr object in the global namespace. + * So, for example, after a call to $PAGE->requires->string_for_js('course', 'moodle'); * then the JavaScript variable mstr.moodle.course will be 'Course', or the * equivalent in the current language. * @@ -250,7 +263,7 @@ class page_requirements_manager { * * If you do need the same string expanded with different $a values, then * the solution is to put them in your own data structure (e.g. and array) - * that you pass to JavaScript with @see{data_for_js}. + * that you pass to JavaScript with {@link data_for_js()}. * * @param string $identifier the desired string. * @param string $module the language file to look in. @@ -259,7 +272,7 @@ class page_requirements_manager { public function string_for_js($identifier, $module, $a = NULL) { $string = get_string($identifier, $module, $a); if (!$module) { - $module = 'moodle'; + throw new coding_exception('The $module parameter is required for page_requirements_manager::string_for_js.'); } if (isset($this->stringsforjs[$module][$identifier]) && $this->stringsforjs[$module][$identifier] != $string) { throw new coding_exception("Attempt to re-define already required string '$identifier' " . @@ -269,8 +282,12 @@ class page_requirements_manager { } /** - * Make some data from PHP available to JavaScript code. For example, if you call + * Make some data from PHP available to JavaScript code. + * + * For example, if you call + * 
      *      $PAGE->requires->data_for_js('mydata', array('name' => 'Moodle'));
+     *
* then in JavsScript mydata.name will be 'Moodle'. * * You cannot call this function more than once with the same variable name @@ -283,10 +300,11 @@ class page_requirements_manager { * should be considered an experimental feature. * @param mixed $data The data to pass to JavaScript. This will be escaped using json_encode, * so passing objects and arrays should work. - * @return required_data_for_js A required_data_for_js object. + * @return required_data_for_js The required_data_for_js object. * This allows you to control when the link to the script is output by - * calling methods like ->asap(), ->in_head(), ->at_top_of_body() or - * ->on_dom_ready() methods. + * calling methods like {@link required_data_for_js::asap()}, + * {@link required_data_for_js::in_head()} or + * {@link required_data_for_js::at_top_of_body() methods. */ public function data_for_js($variable, $data) { if (isset($this->variablesinitialised[$variable])) { @@ -316,7 +334,7 @@ class page_requirements_manager { } /** - * Get the code for the linked resources that need to appear in a particular place. + * Get the inline JavaScript code that need to appear in a particular place. * @param $when one of the WHEN_... constants. * @return string the javascript that should be output in that place. */ @@ -332,9 +350,12 @@ class page_requirements_manager { } /** - * Generate any HTML that needs to go inside the <head> tag. + * Generate any HTML that needs to go inside the tag. * - * @return string the HTML code to to inside the <head> tag. + * Normally, this method is called automatically by the code that prints the + * tag. You should not normally need to call it in your own code. + * + * @return string the HTML code to to inside the tag. */ public function get_head_code() { setup_core_javascript($this); @@ -346,9 +367,12 @@ class page_requirements_manager { } /** - * Generate any HTML that needs to go at the start of the <body> tag. + * Generate any HTML that needs to go at the start of the tag. * - * @return string the HTML code to go at the start of the <body> tag. + * Normally, this method is called automatically by the code that prints the + * tag. You should not normally need to call it in your own code. + * + * @return string the HTML code to go at the start of the tag. */ public function get_top_of_body_code() { $output = $this->get_linked_resources_code(self::WHEN_TOP_OF_BODY); @@ -362,6 +386,9 @@ class page_requirements_manager { /** * Generate any HTML that needs to go at the end of the page. * + * Normally, this method is called automatically by the code that prints the + * page footer. You should not normally need to call it in your own code. + * * @return string the HTML code to to at the end of the page. */ public function get_end_code() { @@ -384,18 +411,14 @@ class page_requirements_manager { } /** - * Have we already output the code in the tag? - * - * @return boolean + * @return boolean Have we already output the code in the tag? */ public function is_head_done() { return $this->headdone; } /** - * Have we already output the code at the start of the tag? - * - * @return boolean + * @return boolean Have we already output the code at the start of the tag? */ public function is_top_of_body_done() { return $this->topofbodydone; @@ -428,9 +451,9 @@ abstract class requirement_base { /** * Mark that this requirement has been satisfied (that is, that the HTML - * returned by @see{get_html} has been output. + * returned by {@link get_html()} has been output. * @return boolean has this requirement been satisfied yet? That is, has - * that the HTML returned by @see{get_html} has been output already. + * that the HTML returned by {@link get_html()} has been output already. */ public function is_done() { return $this->done; @@ -438,7 +461,7 @@ abstract class requirement_base { /** * Mark that this requirement has been satisfied (that is, that the HTML - * returned by @see{get_html} has been output. + * returned by {@link get_html()} has been output. */ public function mark_done() { $this->done = true; @@ -446,7 +469,7 @@ abstract class requirement_base { /** * Where on the page the HTML this requirement is meant to go. - * @return integer One of the page_requirements_manager::WHEN_... constants. + * @return integer One of the {@link page_requirements_manager}::WHEN_... constants. */ public function get_when() { return $this->when; @@ -486,14 +509,14 @@ abstract class linked_requirement extends requirement_base { /** - * A subclass of @see{linked_requirement} to represent a requried JavaScript file. + * A subclass of {@link linked_requirement} to represent a requried JavaScript file. * * You should not create instances of this class directly. Instead you should - * work with a @see{page_requirements_manager} - and probably the only + * work with a {@link page_requirements_manager} - and probably the only * page_requirements_manager you will ever need is the one at $PAGE->requires. * - * The methods ->asap, ->in_head and at_top_of_body() are indented to be used - * as a fluid API, so you can say things like + * The methods {@link asap()}, {@link in_head()} and {@link at_top_of_body()} + * are indented to be used as a fluid API, so you can say things like * $PAGE->requires->js('mod/mymod/script.js')->in_head(); * * However, by default JavaScript files are included at the end of the HTML. @@ -508,7 +531,7 @@ class required_js extends linked_requirement { /** * Constructor. Normally instances of this class should not be created * directly. Client code should create them via the page_requirements_manager - * method ->js(...). + * method {@link page_requirements_manager::js()}. * * @param page_requirements_manager $manager the page_requirements_manager we are associated with. * @param string $url The URL of the JavaScript file we are linking to. @@ -525,12 +548,14 @@ class required_js extends linked_requirement { /** * Indicate that the link to this JavaScript file should be output as soon as * possible. That is, if this requirement has already been output, this method - * does nothing. Otherwise, if the <head> tag has not yet been printed, the link - * to this script will be put in <head>. Otherwise, this method returns a + * does nothing. Otherwise, if the tag has not yet been printed, the link + * to this script will be put in . Otherwise, this method returns a * fragment of HTML that the caller is responsible for outputting as soon as * possible. In fact, it is recommended that you only call this function from * an echo statement, like: + * 
      *     echo $PAGE->requires->js(...)->asap();
+     *
* * @return string The HTML required to include this JavaScript file. The caller * is responsible for outputting this HTML promptly. @@ -550,7 +575,7 @@ class required_js extends linked_requirement { /** * Indicate that the link to this JavaScript file should be output in the - * <head> section of the HTML. If it too late for this request to be + * section of the HTML. If it too late for this request to be * satisfied, an exception is thrown. */ public function in_head() { @@ -565,7 +590,7 @@ class required_js extends linked_requirement { /** * Indicate that the link to this JavaScript file should be output at the top - * of the <body> section of the HTML. If it too late for this request to be + * of the section of the HTML. If it too late for this request to be * satisfied, an exception is thrown. */ public function at_top_of_body() { @@ -581,21 +606,21 @@ class required_js extends linked_requirement { /** - * A subclass of @see{linked_requirement} to represent a requried YUI library. + * A subclass of {@link linked_requirement} to represent a requried YUI library. * * You should not create instances of this class directly. Instead you should - * work with a @see{page_requirements_manager} - and probably the only + * work with a {@link page_requirements_manager} - and probably the only * page_requirements_manager you will ever need is the one at $PAGE->requires. * - * The methods ->asap, ->in_head and at_top_of_body() are indented to be used - * as a fluid API, so you can say things like + * The methods {@link asap()}, {@link in_head()} and {@link at_top_of_body()} + * are indented to be used as a fluid API, so you can say things like * $PAGE->requires->yui_lib('autocomplete')->in_head(); * - * This class (with the help of @see{ajax_resolve_yui_lib}) knows about the + * This class (with the help of {@link ajax_resolve_yui_lib()}) knows about the * dependancies between the different YUI libraries, and will include all the * other libraries required by the one you ask for. It also knows which YUI * libraries require css files. If the library you ask for requires CSS files, - * then you should ask for it before <head> is output, or an exception will + * then you should ask for it before is output, or an exception will * be thrown. * * By default JavaScript files are included at the end of the HTML. @@ -612,11 +637,11 @@ class required_yui_lib extends linked_requirement { /** * Constructor. Normally instances of this class should not be created * directly. Client code should create them via the page_requirements_manager - * method ->yui_lib(...). + * method {@link page_requirements_manager::yui_lib()}. * * @param page_requirements_manager $manager the page_requirements_manager we are associated with. * @param string $libname The name of the YUI library you want. See the array - * defined in @see{ajax_resolve_yui_lib} for a list of known libraries. + * defined in {@link ajax_resolve_yui_lib()} for a list of known libraries. */ public function __construct(page_requirements_manager $manager, $libname) { parent::__construct($manager, ''); @@ -638,12 +663,14 @@ class required_yui_lib extends linked_requirement { /** * Indicate that the link to this YUI library file should be output as soon as - * possible. The comment above @see{required_js::asap} applies to this method too. + * possible. The comment above {@link required_js::asap()} applies to this method too. * * @return string The HTML required to include this JavaScript file. The caller * is responsible for outputting this HTML promptly. For example, a good way to * call this method is like + * 
      *     echo $PAGE->requires->yui_lib(...)->asap();
+     *
*/ public function asap() { if ($this->is_done()) { @@ -665,7 +692,7 @@ class required_yui_lib extends linked_requirement { /** * Indicate that the links to this YUI library should be output in the - * <head> section of the HTML. If it too late for this request to be + * section of the HTML. If it too late for this request to be * satisfied, an exception is thrown. */ public function in_head() { @@ -685,7 +712,7 @@ class required_yui_lib extends linked_requirement { /** * Indicate that the links to this YUI library should be output in the - * <head> section of the HTML. If it too late for this request to be + * section of the HTML. If it too late for this request to be * satisfied, an exception is thrown. */ public function at_top_of_body() { @@ -706,17 +733,17 @@ class required_yui_lib extends linked_requirement { /** - * A subclass of @see{linked_requirement} to represent a required CSS file. - * Of course, all links to CSS files must go in the <head section of the HTML. + * A subclass of {@link linked_requirement} to represent a required CSS file. + * Of course, all links to CSS files must go in the section of the HTML. * * @copyright 2009 Tim Hunt * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class required_css extends linked_requirement { /** - * Constructor. Normally instances of this class should not be created - * directly. Client code should create them via the page_requirements_manager - * method ->css(...). + * Constructor. Normally instances of this class should not be created directly. + * Client code should create them via the page_requirements_manager + * method {@link page_requirements_manager::css()} * * @param page_requirements_manager $manager the page_requirements_manager we are associated with. * @param string $url The URL of the CSS file we are linking to. @@ -733,10 +760,10 @@ class required_css extends linked_requirement { /** - * A subclass of @see{linked_requirement} to represent a skip link. + * A subclass of {@link linked_requirement} to represent a skip link. * A skip link is a concept from accessibility. You have some links like * 'Skip to main content' linking to an #maincontent anchor, at the start of the - * <body> tag, so that users using assistive technologies like screen readers + * tag, so that users using assistive technologies like screen readers * can easily get to the main content without having to work their way through * any navigation, blocks, etc. that comes before it in the HTML. * @@ -747,9 +774,9 @@ class required_skip_link extends linked_requirement { protected $linktext; /** - * Constructor. Normally instances of this class should not be created - * directly. Client code should create them via the page_requirements_manager - * method ->yui_lib(...). + * Constructor. Normally instances of this class should not be created directly. + * Client code should create them via the page_requirements_manager + * method {@link page_requirements_manager::yui_lib()}. * * @param page_requirements_manager $manager the page_requirements_manager we are associated with. * @param string $target the name of the anchor in the page we are linking to. @@ -776,10 +803,7 @@ class required_skip_link extends linked_requirement { abstract class required_js_code extends requirement_base { /** - * Constructor. Normally the class and its subclasses should not be created - * directly. Client code should create them via a page_requirements_manager - * method like ->js(...). - * + * Constructor. * @param page_requirements_manager $manager the page_requirements_manager we are associated with. */ protected function __construct(page_requirements_manager $manager) { @@ -795,12 +819,14 @@ abstract class required_js_code extends requirement_base { /** * Indicate that the link to this JavaScript file should be output as soon as * possible. That is, if this requirement has already been output, this method - * does nothing. Otherwise, if the <head> tag has not yet been printed, the link - * to this script will be put in <head>. Otherwise, this method returns a + * does nothing. Otherwise, if the tag has not yet been printed, the link + * to this script will be put in . Otherwise, this method returns a * fragment of HTML that the caller is responsible for outputting as soon as * possible. In fact, it is recommended that you only call this function from * an echo statement, like: + * 
      *     echo $PAGE->requires->js(...)->asap();
+     *
* * @return string The HTML required to include this JavaScript file. The caller * is responsible for outputting this HTML promptly. @@ -821,7 +847,7 @@ abstract class required_js_code extends requirement_base { /** * Indicate that the link to this JavaScript file should be output in the - * <head> section of the HTML. If it too late for this request to be + * section of the HTML. If it too late for this request to be * satisfied, an exception is thrown. */ public function in_head() { @@ -836,7 +862,7 @@ abstract class required_js_code extends requirement_base { /** * Indicate that the link to this JavaScript file should be output at the top - * of the <body> section of the HTML. If it too late for this request to be + * of the section of the HTML. If it too late for this request to be * satisfied, an exception is thrown. */ public function at_top_of_body() { @@ -854,7 +880,7 @@ abstract class required_js_code extends requirement_base { /** * This class represents a JavaScript function that must be called from the HTML * page. By default the call will be made at the end of the page, but you can - * chage that using the ->asap, ->in_head, etc. methods. + * chage that using the {@link asap()}, {@link in_head()}, etc. methods. * * @copyright 2009 Tim Hunt * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later @@ -865,9 +891,9 @@ class required_js_function_call extends required_js_code { protected $delay = 0; /** - * Constructor. Normally the class and its subclasses should not be created - * directly. Client code should create them via the page_requirements_manager - * method ->js_function_call(...). + * Constructor. Normally instances of this class should not be created directly. + * Client code should create them via the page_requirements_manager + * method {@link page_requirements_manager::js_function_call()}. * * @param page_requirements_manager $manager the page_requirements_manager we are associated with. * @param string $function the name of the JavaScritp function to call. @@ -927,7 +953,7 @@ class required_js_function_call extends required_js_code { /** * This class represents some data from PHP that needs to be made available in a * global JavaScript variable. By default the data will be output at the end of - * the page, but you can chage that using the ->asap, ->in_head, etc. methods. + * the page, but you can chage that using the {@link asap()}, {@link in_head()}, etc. methods. * * @copyright 2009 Tim Hunt * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later @@ -937,9 +963,9 @@ class required_data_for_js extends required_js_code { protected $data; /** - * Constructor. Normally the class and its subclasses should not be created - * directly. Client code should create them via the page_requirements_manager - * method ->data_for_js(...). + * Constructor. Normally the class and its subclasses should not be created directly. + * Client code should create them via the page_requirements_manager + * method {@link page_requirements_manager::data_for_js()}. * * @param page_requirements_manager $manager the page_requirements_manager we are associated with. * @param string $variable the the name of the JavaScript variable to assign the data to. diff --git a/lib/pagelib.php b/lib/pagelib.php index 1ed204dc276..9dd328525ea 100644 --- a/lib/pagelib.php +++ b/lib/pagelib.php @@ -26,6 +26,7 @@ * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ + /** * $PAGE is a central store of information about the current page we are * generating in response to the user's request. It does not do very much itself @@ -37,6 +38,8 @@ * @subpackage pages * @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com} * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later + * + * @property-read page_requirements_manager $requires Tracks resources (for example required .css and .js files) required by this page. */ class moodle_page { /**#@+ Tracks the where we are in the generation of the page. */