PHP navigation_node::get方法代码示例

 public function test_node_remove()
 {
     $this->setup_node();
     $remove1 = $this->node->add('child to remove 1', null, navigation_node::TYPE_CUSTOM, null, 'remove1');
     $remove2 = $this->node->add('child to remove 2', null, navigation_node::TYPE_CUSTOM, null, 'remove2');
     $remove3 = $remove2->add('child to remove 3', null, navigation_node::TYPE_CUSTOM, null, 'remove3');
     $this->assertInstanceOf('navigation_node', $remove1);
     $this->assertInstanceOf('navigation_node', $remove2);
     $this->assertInstanceOf('navigation_node', $remove3);
     $this->assertInstanceOf('navigation_node', $this->node->get('remove1'));
     $this->assertInstanceOf('navigation_node', $this->node->get('remove2'));
     $this->assertInstanceOf('navigation_node', $remove2->get('remove3'));
     // Remove element and make sure this is no longer a child.
     $this->assertTrue($remove1->remove());
     $this->assertFalse($this->node->get('remove1'));
     $this->assertFalse(in_array('remove1', $this->node->get_children_key_list(), true));
     // Make sure that we can insert element after removal.
     $insertelement = navigation_node::create('extra element 4', null, navigation_node::TYPE_CUSTOM, null, 'element4');
     $this->node->add_node($insertelement, 'remove2');
     $this->assertNotEmpty($this->node->get('element4'));
     // Remove more elements.
     $this->assertTrue($this->node->get('remove2')->remove());
     $this->assertFalse($this->node->get('remove2'));
     // Make sure that we can add element after removal.
     $this->node->add('extra element 5', null, navigation_node::TYPE_CUSTOM, null, 'element5');
     $this->assertNotEmpty($this->node->get('element5'));
     $this->assertTrue($remove2->get('remove3')->remove());
     $this->assertFalse($this->node->get('remove1'));
     $this->assertFalse($this->node->get('remove2'));
 }

/**
 * This function extends the navigation with the tool items
 *
 * @param navigation_node $navigation The navigation node to extend
 * @param stdClass        $course     The course to object for the tool
 * @param context         $context    The context of the course
 */
function tool_monitor_extend_navigation_frontpage($navigation, $course, $context)
{
    if (has_capability('tool/monitor:managerules', $context)) {
        $url = new moodle_url('/admin/tool/monitor/managerules.php', array('courseid' => $course->id));
        $settingsnode = navigation_node::create(get_string('managerules', 'tool_monitor'), $url, navigation_node::TYPE_SETTING, null, null, new pix_icon('i/settings', ''));
        $reportnode = $navigation->get('frontpagereports');
        if (isset($settingsnode) && !empty($reportnode)) {
            $reportnode->add_node($settingsnode);
        }
    }
}

 public function test_remove()
 {
     $remove1 = $this->node->add('child to remove 1', null, navigation_node::TYPE_CUSTOM, null, 'remove1');
     $remove2 = $this->node->add('child to remove 2', null, navigation_node::TYPE_CUSTOM, null, 'remove2');
     $remove3 = $remove2->add('child to remove 3', null, navigation_node::TYPE_CUSTOM, null, 'remove3');
     $this->assertIsA($remove1, 'navigation_node');
     $this->assertIsA($remove2, 'navigation_node');
     $this->assertIsA($remove3, 'navigation_node');
     $this->assertIsA($this->node->get('remove1'), 'navigation_node');
     $this->assertIsA($this->node->get('remove2'), 'navigation_node');
     $this->assertIsA($remove2->get('remove3'), 'navigation_node');
     $this->assertTrue($remove1->remove());
     $this->assertTrue($this->node->get('remove2')->remove());
     $this->assertTrue($remove2->get('remove3')->remove());
     $this->assertFalse($this->node->get('remove1'));
     $this->assertFalse($this->node->get('remove2'));
 }

/**
 * Change the navigation block and bar only for external users
 * Force course or activity navigation and modify CSS also
 * Please note that this function is only called in pages where the navigation block is present
 *
 * @global moodle_user $USER
 * @global moodle_database $DB
 * @param navigation_node $nav Current navigation object
 */
function local_ltiprovider_extend_navigation($nav) {
    global $USER, $PAGE, $SESSION;

    // Check capabilities for tool providers
    // TODO Change this for Moodle 2.3:
    // use extend_navigation_course and extend_navigation_user
    if ($PAGE->course->id and $PAGE->course->id != SITEID and has_capability('local/ltiprovider:view', $PAGE->context)) {
        $ltiurl = new moodle_url('/local/ltiprovider/index.php', array('courseid' => $PAGE->course->id));
        $coursenode = $nav->find($PAGE->course->id, $nav::TYPE_COURSE);
        $coursenode->add(get_string('pluginname', 'local_ltiprovider'), $ltiurl, $nav::TYPE_CONTAINER, null, 'ltiprovider' . $PAGE->course->id);
    }

    if (isset($USER) and isset($USER->auth) and $USER->auth == 'nologin' and strpos($USER->username, 'ltiprovider') === 0) {
        // Force course or activity navigation
        if (isset($SESSION->ltiprovider) and $SESSION->ltiprovider->forcenavigation) {
            $context = $SESSION->ltiprovider->context;
            $urltogo = '';
            if ($context->contextlevel == CONTEXT_COURSE and $PAGE->course->id != $SESSION->ltiprovider->courseid) {
                $urltogo = new moodle_url('/course/view.php', array('id' => $SESSION->ltiprovider->courseid));
            } else if ($context->contextlevel == CONTEXT_MODULE and $PAGE->context->id != $context->id) {
                $cm = get_coursemodule_from_id(false, $context->instanceid, 0, false, MUST_EXIST);
                $urltogo = new moodle_url('/mod/' . $cm->modname . '/view.php', array('id' => $cm->id));
            }

            if ($urltogo) {
                redirect($urltogo);
            }
        }

        // Delete all the navigation nodes except the course one
        $coursenode = $nav->find($PAGE->course->id, $nav::TYPE_COURSE);
        foreach (array('myprofile', 'users', 'site', 'home', 'myhome', 'mycourses', 'courses', '1') as $nodekey) {
            if ($node = $nav->get($nodekey)) {
                $node->remove();
            }
        }
        $nav->children->add($coursenode);

        // Custom CSS
        if (isset($SESSION->ltiprovider)) {
            $PAGE->requires->css(new moodle_url('/local/ltiprovider/styles.php', array('id' => $SESSION->ltiprovider->id)));
        }
    }
}

 /**
  * Attempts to get the navigation with the given key from this nodes children.
  *
  * This function only looks at this nodes children, it does NOT look recursivily.
  * If the node can't be found then false is returned.
  *
  * If you need to search recursivily then use the {@link global_navigation::find()} method.
  *
  * Note: If you are trying to set the active node {@link navigation_node::override_active_url()}
  * may be of more use to you.
  *
  * @param string|int $key The key of the node you wish to receive.
  * @param int $type One of navigation_node::TYPE_*
  * @return navigation_node|false
  */
 public function get($key, $type = null)
 {
     if (!$this->initialised) {
         $this->initialise();
     }
     return parent::get($key, $type);
 }

/**
 * Extends the course administration navigation with the Badges page
 *
 * @param navigation_node $coursenode
 * @param object $course
 */
function badges_add_course_navigation(navigation_node $coursenode, stdClass $course)
{
    global $CFG, $SITE;
    $coursecontext = context_course::instance($course->id);
    $isfrontpage = !$coursecontext || $course->id == $SITE->id;
    $canmanage = has_any_capability(array('moodle/badges:viewawarded', 'moodle/badges:createbadge', 'moodle/badges:awardbadge', 'moodle/badges:configurecriteria', 'moodle/badges:configuremessages', 'moodle/badges:configuredetails', 'moodle/badges:deletebadge'), $coursecontext);
    if (!empty($CFG->enablebadges) && !empty($CFG->badges_allowcoursebadges) && !$isfrontpage && $canmanage) {
        $coursenode->add(get_string('coursebadges', 'badges'), null, navigation_node::TYPE_CONTAINER, null, 'coursebadges', new pix_icon('i/badge', get_string('coursebadges', 'badges')));
        $url = new moodle_url('/badges/index.php', array('type' => BADGE_TYPE_COURSE, 'id' => $course->id));
        $coursenode->get('coursebadges')->add(get_string('managebadges', 'badges'), $url, navigation_node::TYPE_SETTING, null, 'coursebadges');
        if (has_capability('moodle/badges:createbadge', $coursecontext)) {
            $url = new moodle_url('/badges/newbadge.php', array('type' => BADGE_TYPE_COURSE, 'id' => $course->id));
            $coursenode->get('coursebadges')->add(get_string('newbadge', 'badges'), $url, navigation_node::TYPE_SETTING, null, 'newbadge');
        }
    }
}

/**
 * @param navigation_node $contextnode
 * @param $context context object
 * @return navigation_node contextnode passed with any modifications made. useful for chaining.
 */
function get_context_nav(navigation_node $contextnode, $context)
{
    global $COURSE;
    // Default link for now, change for each node.
    $url = new moodle_url('/local/contextadmin/index.php', array('contextid' => '1'));
    // My Categories.
    if (!$contextnode->get('mycat')) {
        $contextnode->add(get_string('mycat', 'local_contextadmin'), $url, navigation_node::TYPE_SETTING, null, 'mycat', new pix_icon('i/settings', ''));
    }
    // Add custom search page for category admins.
    $url = new moodle_url('/local/contextadmin/cat_search.php', array());
    // Category Search tool (search restricted to categories that the user has access to).
    if (!$contextnode->get('search')) {
        $contextnode->add(get_string('search', 'local_contextadmin'), $url, navigation_node::TYPE_SETTING, null, 'search', new pix_icon('i/settings', ''));
    }
    if (has_capability('local/contextadmin:renameroles', $context)) {
        if ($COURSE->category == 0 && $context->contextlevel != CONTEXT_COURSECAT) {
            // If we are at a system course (site course) we have no category context...so return FALSE.
            return false;
        } else {
            // Course variable has category as 0 but the context is CONTEXT_COURSECAT so we take instanceid.
            // Lower contexts can use $COURSE->category.
            if ($context->contextlevel == CONTEXT_COURSECAT) {
                $catid = $context->instanceid;
            } else {
                if ($context->contextlevel > CONTEXT_COURSECAT) {
                    $catid = $COURSE->category;
                } else {
                    return false;
                }
            }
        }
        // Add custom edit page for category admins.
        $url = new moodle_url('/local/contextadmin/categoryroles.php', array('id' => $catid));
        // Category Search tool (search restricted to categories that the user has access to).
        if (!$contextnode->get('roleedit')) {
            $contextnode->add(get_string('rolerenaming'), $url, navigation_node::TYPE_SETTING, null, 'roleedit', new pix_icon('i/settings', ''));
        }
    }
    if (has_capability('local/contextadmin:changevisibilty', $context) or has_capability('local/contextadmin:editowncatsettings', $context)) {
        // There is a scenario where the context is at the course level and the parent category is a system context (not Category).
        // We need to catch it.
        if ($COURSE->category == 0 && $context->contextlevel != CONTEXT_COURSECAT) {
            // If we are at a system course (site course) we have no category context...so return FALSE.
            return false;
        } else {
            // Course variable has category as 0 but the context is CONTEXT_COURSECAT so we take instanceid.
            // Lower contexts can use $COURSE->category.
            if ($context->contextlevel == CONTEXT_COURSECAT) {
                $catid = $context->instanceid;
            } else {
                if ($context->contextlevel > CONTEXT_COURSECAT) {
                    $catid = $COURSE->category;
                } else {
                    return false;
                }
            }
        }
        // Todo Advanced Features.
        // Todo Courses.
        // Plugins Node.
        if (!$contextnode->get('plugins')) {
            $pluginnode = $contextnode->add(get_string('plugins', 'local_contextadmin'), null, navigation_node::TYPE_SETTING, null, 'plugins', new pix_icon('i/settings', ''));
            create_plugin_node($pluginnode, $context->id, $catid);
        }
    }
    return $contextnode;
}

/**
 * Change the navigation block and bar only for external users
 * Force course or activity navigation and modify CSS also
 * Please note that this function is only called in pages where the navigation block is present
 *
 * @global moodle_user $USER
 * @global moodle_database $DB
 * @param navigation_node $nav Current navigation object
 */
function local_ltiprovider_extends_navigation($nav)
{
    global $CFG, $USER, $PAGE, $SESSION, $ME;
    // Check capabilities for tool providers
    // Only for Moodle < 2.3 versions
    if ($CFG->version < 2012062500 and $PAGE->course->id and $PAGE->course->id != SITEID and has_capability('local/ltiprovider:view', $PAGE->context)) {
        $ltiurl = new moodle_url('/local/ltiprovider/index.php', array('courseid' => $PAGE->course->id));
        $coursenode = $nav->find($PAGE->course->id, $nav::TYPE_COURSE);
        $coursenode->add(get_string('pluginname', 'local_ltiprovider'), $ltiurl, $nav::TYPE_CONTAINER, null, 'ltiprovider' . $PAGE->course->id);
    }
    if (isset($USER) and isset($USER->auth) and strpos($USER->username, 'ltiprovider') === 0) {
        // Force course or activity navigation
        if (isset($SESSION->ltiprovider) and $SESSION->ltiprovider->forcenavigation) {
            $context = $SESSION->ltiprovider->context;
            $urltogo = '';
            if ($context->contextlevel == CONTEXT_COURSE and $PAGE->course->id != $SESSION->ltiprovider->courseid) {
                $urltogo = new moodle_url('/course/view.php', array('id' => $SESSION->ltiprovider->courseid));
            } else {
                if ($context->contextlevel == CONTEXT_MODULE and $PAGE->context->id != $context->id) {
                    $cm = get_coursemodule_from_id(false, $context->instanceid, 0, false, MUST_EXIST);
                    $urltogo = new moodle_url('/mod/' . $cm->modname . '/view.php', array('id' => $cm->id));
                }
            }
            // Special case, user policy, we don't have to do nothing to avoid infinites loops.
            if (strpos($ME, 'user/policy.php')) {
                return;
            }
            if ($urltogo) {
                redirect($urltogo);
            }
        }
        // Delete all the navigation nodes except the course one
        if ($coursenode = $nav->find($PAGE->course->id, $nav::TYPE_COURSE)) {
            foreach (array('myprofile', 'users', 'site', 'home', 'myhome', 'mycourses', 'courses', '1') as $nodekey) {
                if ($node = $nav->get($nodekey)) {
                    $node->remove();
                }
            }
            $nav->children->add($coursenode);
        }
        // Custom CSS
        if (isset($SESSION->ltiprovider) and !$PAGE->requires->is_head_done()) {
            $PAGE->requires->css(new moodle_url('/local/ltiprovider/styles.php', array('id' => $SESSION->ltiprovider->id)));
        } else {
            $url = new moodle_url('/local/ltiprovider/styles.js.php', array('id' => $SESSION->ltiprovider->id, 'rand' => rand(0, 1000)));
            $PAGE->requires->js($url);
        }
    }
}

    /**
     * Loads all of the activities for a section into the navigation structure.
     *
     * @param navigation_node $sectionnode
     * @param int $sectionnumber
     * @param stdClass $modinfo Object returned from {@see get_fast_modinfo()}
     * @return array Array of activity nodes
     */
    protected function load_section_activities(navigation_node $sectionnode, $sectionnumber, $modinfo) {
        if (!array_key_exists($sectionnumber, $modinfo->sections)) {
            return true;
        }

        $activities = array();
        foreach ($modinfo->sections[$sectionnumber] as $cmid) {
            $cm = $modinfo->cms[$cmid];
            if (!$cm->uservisible) {
                continue;
            }
            if ($sectionnode->get($cm->id, navigation_node::TYPE_ACTIVITY) !== false) {
                continue;
            }
            if ($cm->icon) {
                $icon = new pix_icon($cm->icon, get_string('modulename', $cm->modname), $cm->iconcomponent);
            } else {
                $icon = new pix_icon('icon', get_string('modulename', $cm->modname), $cm->modname);
            }
            $url = new moodle_url('/mod/'.$cm->modname.'/view.php', array('id'=>$cm->id));
            $activitynode = $sectionnode->add(format_string($cm->name), $url, navigation_node::TYPE_ACTIVITY, null, $cm->id, $icon);
            $activitynode->title(get_string('modulename', $cm->modname));
            $activitynode->hidden = (!$cm->visible);
            if ($cm->modname == 'label') {
                $activitynode->display = false;
            } else if ($this->module_extends_navigation($cm->modname)) {
                $activitynode->nodetype = navigation_node::NODETYPE_BRANCH;
            }
            $activities[$cmid] = $activitynode;
        }

        return $activities;
    }