376 lines
10 KiB
PHP
376 lines
10 KiB
PHP
<?php
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// {{{ICINGA_LICENSE_HEADER}}}
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/**
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* This file is part of Icinga 2 Web.
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*
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* Icinga 2 Web - Head for multiple monitoring backends.
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* Copyright (C) 2013 Icinga Development Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* @copyright 2013 Icinga Development Team <info@icinga.org>
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* @license http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
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* @author Icinga Development Team <info@icinga.org>
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*/
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// {{{ICINGA_LICENSE_HEADER}}}
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namespace Icinga\Web\Widget;
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use Icinga\Application\Icinga;
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use Icinga\Config\Config as IcingaConfig;
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use Icinga\Application\Logger;
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use Icinga\Exception\ConfigurationError;
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use Icinga\Web\Widget\Widget;
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use Icinga\Web\Widget\Dashboard\Pane;
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use Icinga\Web\Widget\Dashboard\Component as DashboardComponent;
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use Icinga\Web\Url;
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use Zend_View_Abstract;
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/**
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* Dashboards display multiple views on a single page
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*
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* The terminology is as follows:
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* - Component: A single view showing a specific url
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* - Pane: Aggregates one or more components on one page, displays it's title as a tab
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* - Dashboard: Shows all panes
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*
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*/
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class Dashboard implements Widget
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{
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/**
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* The configuration containing information about this dashboard
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*
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* @var IcingaConfig;
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*/
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private $config;
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/**
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* An array containing all panes of this dashboard
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*
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* @var array
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*/
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private $panes = array();
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/**
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* The @see Icinga\Web\Widget\Tabs object for displaying displayable panes
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*
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* @var Tabs
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*/
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private $tabs;
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/**
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* The parameter that will be added to identify panes
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*
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* @var string
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*/
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private $tabParam = 'pane';
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/**
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* Set the given tab name as active.
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*
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* @param string $name The tab name to activate
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*
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*/
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public function activate($name)
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{
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$this->getTabs()->activate($name);
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}
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/**
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* Return the tab object used to navigate through this dashboard
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*
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* @return Tabs
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*/
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public function getTabs()
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{
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$url = Url::fromRequest()->getUrlWithout($this->tabParam);
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if ($this->tabs === null) {
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$this->tabs = new Tabs();
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foreach ($this->panes as $key => $pane) {
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$this->tabs->add(
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$key,
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array(
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'title' => $pane->getTitle(),
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'url' => clone($url),
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'urlParams' => array($this->tabParam => $key)
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)
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);
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}
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}
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return $this->tabs;
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}
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/**
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* Store the current dashboard with all it's panes and components to the given file (or the default one if none is
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* given)
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*
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*
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* @param string $file The filename to store this dashboard as an ini
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*
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* @return $this
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* @throws \Icinga\Exception\ConfigurationError If persisting fails, details are written to the log
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*
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*/
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public function store($file = null)
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{
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if ($file === null) {
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$file = IcingaConfig::app('dashboard/dashboard')->getConfigFile();
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}
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if (!is_writable($file)) {
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Logger::error('Tried to persist dashboard to %s, but path is not writeable', $file);
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throw new ConfigurationError('Can\'t persist dashboard');
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}
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// make sure empty dashboards don't cause errors
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$iniString = trim($this->toIni());
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if (!$iniString) {
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$iniString = ' ';
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}
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if (!@file_put_contents($file, $iniString)) {
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$error = error_get_last();
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if ($error == null) {
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$error = 'Unknown error';
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} else {
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$error = $error['message'];
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}
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Logger::error('Tried to persist dashboard to %s, but got error: %s', $file, $error);
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throw new ConfigurationError('Can\'t persist dashboard');
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} else {
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return $this;
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}
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}
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/**
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* Populate this dashboard via the given configuration file
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*
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* @param IcingaConfig $config The configuration file to populate this dashboard with
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*
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* @return $this
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*/
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public function readConfig(IcingaConfig $config)
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{
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$this->config = $config;
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$this->panes = array();
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$this->loadConfigPanes();
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return $this;
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}
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/**
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* Creates a new empty pane with the given title
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*
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* @param string $title
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*
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* @return Dashboard $this
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*/
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public function createPane($title)
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{
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$pane = new Pane($title);
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$pane->setTitle($title);
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$this->addPane($pane);
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return $this;
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}
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/**
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* Update or adds a new component with the given url to a pane
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*
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* @TODO: Should only allow component objects to be added directly as soon as we store more information
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*
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* @param string $pane The pane to add the component to
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* @param Component|string $component The component to add or the title of the newly created component
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* @param $url The url to use for the component
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*
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* @return $this
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*/
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public function setComponentUrl($pane, $component, $url)
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{
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if ($component === null && strpos($pane, '.')) {
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list($pane, $component) = preg_split('~\.~', $pane, 2);
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}
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if (!isset($this->panes[$pane])) {
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$this->createPane($pane);
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}
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$pane = $this->getPane($pane);
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if ($pane->hasComponent($component)) {
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$pane->getComponent($component)->setUrl($url);
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} else {
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$pane->addComponent($component, $url);
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}
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return $this;
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}
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/**
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* Return true if a pane doesn't exist or doesn't have any components in it
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*
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* @param string $pane The name of the pane to check for emptyness
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*
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* @return bool
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*/
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public function isEmptyPane($pane)
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{
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$paneObj = $this->getPane($pane);
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if ($paneObj === null) {
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return true;
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}
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$cmps = $paneObj->getComponents();
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return !empty($cmps);
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}
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/**
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* Remove a component $component from the given pane
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*
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* @param string $pane The pane to remove the component from
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* @param Component|string $component The component to remove or it's name
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*
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* @return $this
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*/
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public function removeComponent($pane, $component)
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{
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if ($component === null && strpos($pane, '.')) {
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list($pane, $component) = preg_split('~\.~', $pane, 2);
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}
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$pane = $this->getPane($pane);
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if ($pane !== null) {
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$pane->removeComponent($component);
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}
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return $this;
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}
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/**
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* Return an array with pane name=>title format used for comboboxes
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*
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* @return array
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*/
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public function getPaneKeyTitleArray()
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{
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$list = array();
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foreach ($this->panes as $name => $pane) {
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$list[$name] = $pane->getTitle();
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}
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return $list;
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}
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/**
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* Add a pane object to this dashboard
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*
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* @param Pane $pane The pane to add
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*
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* @return $this
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*/
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public function addPane(Pane $pane)
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{
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$this->panes[$pane->getName()] = $pane;
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return $this;
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}
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/**
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* Return the pane with the provided name or null if it doesn't exit
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*
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* @param string $name The name of the pane to return
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*
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* @return null|Pane The pane or null if no pane with the given name exists
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*/
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public function getPane($name)
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{
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if (!isset($this->panes[$name])) {
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return null;
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}
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return $this->panes[$name];
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}
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/**
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* @see Icinga\Web\Widget::render
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*/
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public function render(Zend_View_Abstract $view)
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{
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if (empty($this->panes)) {
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return '';
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}
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return $this->determineActivePane()->render($view);
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}
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/**
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* Activates the default pane of this dashboard and returns it's name
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*
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* @return mixed
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*/
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private function setDefaultPane()
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{
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reset($this->panes);
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$active = key($this->panes);
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$this->activate($active);
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return $active;
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}
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/**
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* Determine the active pane either by the selected tab or the current request
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*
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* @return Pane The currently active pane
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*/
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public function determineActivePane()
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{
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$active = $this->getTabs()->getActiveName();
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if (!$active) {
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if ($active = Url::fromRequest()->getParam($this->tabParam)) {
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if ($this->isEmptyPane($active)) {
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$active = $this->setDefaultPane();
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} else {
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$this->activate($active);
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}
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} else {
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$active = $this->setDefaultPane();
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}
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}
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return $this->panes[$active];
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}
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/**
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* Return the ini string describing this dashboard
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*
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* @return string
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*/
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public function toIni()
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{
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$ini = '';
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foreach ($this->panes as $pane) {
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$ini .= $pane->toIni();
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}
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return $ini;
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}
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/**
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* Load all config panes from @see Dashboard::$config
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*
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*/
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private function loadConfigPanes()
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{
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$items = $this->config;
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foreach ($items->keys() as $key) {
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$item = $this->config->get($key, false);
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if (false === strstr($key, '.')) {
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$this->addPane(Pane::fromIni($key, $item));
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} else {
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list($paneName, $title) = explode('.', $key, 2);
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$pane = $this->getPane($paneName);
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$pane->addComponent(DashboardComponent::fromIni($title, $item, $pane));
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}
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}
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}
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}
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