Menu.php 23.2 KB
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647
<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_View
 * @subpackage Helper
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Menu.php 23775 2011-03-01 17:25:24Z ralph $
 */

/**
 * @see Zend_View_Helper_Navigation_HelperAbstract
 */
require_once 'Zend/View/Helper/Navigation/HelperAbstract.php';

/**
 * Helper for rendering menus from navigation containers
 *
 * @category   Zend
 * @package    Zend_View
 * @subpackage Helper
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_View_Helper_Navigation_Menu
    extends Zend_View_Helper_Navigation_HelperAbstract
{
    /**
     * CSS class to use for the ul element
     *
     * @var string
     */
    protected $_ulClass = 'navigation';

    /**
     * Whether only active branch should be rendered
     *
     * @var bool
     */
    protected $_onlyActiveBranch = false;

    /**
     * Whether parents should be rendered when only rendering active branch
     *
     * @var bool
     */
    protected $_renderParents = true;

    /**
     * Partial view script to use for rendering menu
     *
     * @var string|array
     */
    protected $_partial = null;

    /**
     * View helper entry point:
     * Retrieves helper and optionally sets container to operate on
     *
     * @param  Zend_Navigation_Container $container  [optional] container to
     *                                               operate on
     * @return Zend_View_Helper_Navigation_Menu      fluent interface,
     *                                               returns self
     */
    public function menu(Zend_Navigation_Container $container = null)
    {
        if (null !== $container) {
            $this->setContainer($container);
        }

        return $this;
    }

    // Accessors:

    /**
     * Sets CSS class to use for the first 'ul' element when rendering
     *
     * @param  string $ulClass                   CSS class to set
     * @return Zend_View_Helper_Navigation_Menu  fluent interface, returns self
     */
    public function setUlClass($ulClass)
    {
        if (is_string($ulClass)) {
            $this->_ulClass = $ulClass;
        }

        return $this;
    }

    /**
     * Returns CSS class to use for the first 'ul' element when rendering
     *
     * @return string  CSS class
     */
    public function getUlClass()
    {
        return $this->_ulClass;
    }

    /**
     * Sets a flag indicating whether only active branch should be rendered
     *
     * @param  bool $flag                        [optional] render only active
     *                                           branch. Default is true.
     * @return Zend_View_Helper_Navigation_Menu  fluent interface, returns self
     */
    public function setOnlyActiveBranch($flag = true)
    {
        $this->_onlyActiveBranch = (bool) $flag;
        return $this;
    }

    /**
     * Returns a flag indicating whether only active branch should be rendered
     *
     * By default, this value is false, meaning the entire menu will be
     * be rendered.
     *
     * @return bool  whether only active branch should be rendered
     */
    public function getOnlyActiveBranch()
    {
        return $this->_onlyActiveBranch;
    }

    /**
     * Enables/disables rendering of parents when only rendering active branch
     *
     * See {@link setOnlyActiveBranch()} for more information.
     *
     * @param  bool $flag                        [optional] render parents when
     *                                           rendering active branch.
     *                                           Default is true.
     * @return Zend_View_Helper_Navigation_Menu  fluent interface, returns self
     */
    public function setRenderParents($flag = true)
    {
        $this->_renderParents = (bool) $flag;
        return $this;
    }

    /**
     * Returns flag indicating whether parents should be rendered when rendering
     * only the active branch
     *
     * By default, this value is true.
     *
     * @return bool  whether parents should be rendered
     */
    public function getRenderParents()
    {
        return $this->_renderParents;
    }

    /**
     * Sets which partial view script to use for rendering menu
     *
     * @param  string|array $partial             partial view script or null. If
     *                                           an array is given, it is
     *                                           expected to contain two values;
     *                                           the partial view script to use,
     *                                           and the module where the script
     *                                           can be found.
     * @return Zend_View_Helper_Navigation_Menu  fluent interface, returns self
     */
    public function setPartial($partial)
    {
        if (null === $partial || is_string($partial) || is_array($partial)) {
            $this->_partial = $partial;
        }

        return $this;
    }

    /**
     * Returns partial view script to use for rendering menu
     *
     * @return string|array|null
     */
    public function getPartial()
    {
        return $this->_partial;
    }

    // Public methods:

    /**
     * Returns an HTML string containing an 'a' element for the given page if
     * the page's href is not empty, and a 'span' element if it is empty
     *
     * Overrides {@link Zend_View_Helper_Navigation_Abstract::htmlify()}.
     *
     * @param  Zend_Navigation_Page $page  page to generate HTML for
     * @return string                      HTML string for the given page
     */
    public function htmlify(Zend_Navigation_Page $page)
    {
        // get label and title for translating
        $label = $page->getLabel();
        $title = $page->getTitle();

        // translate label and title?
        if ($this->getUseTranslator() && $t = $this->getTranslator()) {
            if (is_string($label) && !empty($label)) {
                $label = $t->translate($label);
            }
            if (is_string($title) && !empty($title)) {
                $title = $t->translate($title);
            }
        }

        // get attribs for element
        $attribs = array(
            'id'     => $page->getId(),
            'title'  => $title,
            'class'  => $page->getClass()
        );

        // does page have a href?
        if ($href = $page->getHref()) {
            $element = 'a';
            $attribs['href'] = $href;
            $attribs['target'] = $page->getTarget();
        } else {
            $element = 'span';
        }

        return '<' . $element . $this->_htmlAttribs($attribs) . '>'
             . $this->view->escape($label)
             . '</' . $element . '>';
    }

    /**
     * Normalizes given render options
     *
     * @param  array $options  [optional] options to normalize
     * @return array           normalized options
     */
    protected function _normalizeOptions(array $options = array())
    {
        if (isset($options['indent'])) {
            $options['indent'] = $this->_getWhitespace($options['indent']);
        } else {
            $options['indent'] = $this->getIndent();
        }

        if (isset($options['ulClass']) && $options['ulClass'] !== null) {
            $options['ulClass'] = (string) $options['ulClass'];
        } else {
            $options['ulClass'] = $this->getUlClass();
        }

        if (array_key_exists('minDepth', $options)) {
            if (null !== $options['minDepth']) {
                $options['minDepth'] = (int) $options['minDepth'];
            }
        } else {
            $options['minDepth'] = $this->getMinDepth();
        }

        if ($options['minDepth'] < 0 || $options['minDepth'] === null) {
            $options['minDepth'] = 0;
        }

        if (array_key_exists('maxDepth', $options)) {
            if (null !== $options['maxDepth']) {
                $options['maxDepth'] = (int) $options['maxDepth'];
            }
        } else {
            $options['maxDepth'] = $this->getMaxDepth();
        }

        if (!isset($options['onlyActiveBranch'])) {
            $options['onlyActiveBranch'] = $this->getOnlyActiveBranch();
        }

        if (!isset($options['renderParents'])) {
            $options['renderParents'] = $this->getRenderParents();
        }

        return $options;
    }

    // Render methods:

    /**
     * Renders the deepest active menu within [$minDepth, $maxDeth], (called
     * from {@link renderMenu()})
     *
     * @param  Zend_Navigation_Container $container  container to render
     * @param  array                     $active     active page and depth
     * @param  string                    $ulClass    CSS class for first UL
     * @param  string                    $indent     initial indentation
     * @param  int|null                  $minDepth   minimum depth
     * @param  int|null                  $maxDepth   maximum depth
     * @return string                                rendered menu
     */
    protected function _renderDeepestMenu(Zend_Navigation_Container $container,
                                          $ulClass,
                                          $indent,
                                          $minDepth,
                                          $maxDepth)
    {
        if (!$active = $this->findActive($container, $minDepth - 1, $maxDepth)) {
            return '';
        }

        // special case if active page is one below minDepth
        if ($active['depth'] < $minDepth) {
            if (!$active['page']->hasPages()) {
                return '';
            }
        } else if (!$active['page']->hasPages()) {
            // found pages has no children; render siblings
            $active['page'] = $active['page']->getParent();
        } else if (is_int($maxDepth) && $active['depth'] +1 > $maxDepth) {
            // children are below max depth; render siblings
            $active['page'] = $active['page']->getParent();
        }

        $ulClass = $ulClass ? ' class="' . $ulClass . '"' : '';
        $html = $indent . '<ul' . $ulClass . '>' . self::EOL;

        foreach ($active['page'] as $subPage) {
            if (!$this->accept($subPage)) {
                continue;
            }
            $liClass = $subPage->isActive(true) ? ' class="active"' : '';
            $html .= $indent . '    <li' . $liClass . '>' . self::EOL;
            $html .= $indent . '        ' . $this->htmlify($subPage) . self::EOL;
            $html .= $indent . '    </li>' . self::EOL;
        }

        $html .= $indent . '</ul>';

        return $html;
    }

    /**
     * Renders a normal menu (called from {@link renderMenu()})
     *
     * @param  Zend_Navigation_Container $container   container to render
     * @param  string                    $ulClass     CSS class for first UL
     * @param  string                    $indent      initial indentation
     * @param  int|null                  $minDepth    minimum depth
     * @param  int|null                  $maxDepth    maximum depth
     * @param  bool                      $onlyActive  render only active branch?
     * @return string
     */
    protected function _renderMenu(Zend_Navigation_Container $container,
                                   $ulClass,
                                   $indent,
                                   $minDepth,
                                   $maxDepth,
                                   $onlyActive)
    {
        $html = '';

        // find deepest active
        if ($found = $this->findActive($container, $minDepth, $maxDepth)) {
            $foundPage = $found['page'];
            $foundDepth = $found['depth'];
        } else {
            $foundPage = null;
        }

        // create iterator
        $iterator = new RecursiveIteratorIterator($container,
                            RecursiveIteratorIterator::SELF_FIRST);
        if (is_int($maxDepth)) {
            $iterator->setMaxDepth($maxDepth);
        }

        // iterate container
        $prevDepth = -1;
        foreach ($iterator as $page) {
            $depth = $iterator->getDepth();
            $isActive = $page->isActive(true);
            if ($depth < $minDepth || !$this->accept($page)) {
                // page is below minDepth or not accepted by acl/visibilty
                continue;
            } else if ($onlyActive && !$isActive) {
                // page is not active itself, but might be in the active branch
                $accept = false;
                if ($foundPage) {
                    if ($foundPage->hasPage($page)) {
                        // accept if page is a direct child of the active page
                        $accept = true;
                    } else if ($foundPage->getParent()->hasPage($page)) {
                        // page is a sibling of the active page...
                        if (!$foundPage->hasPages() ||
                            is_int($maxDepth) && $foundDepth + 1 > $maxDepth) {
                            // accept if active page has no children, or the
                            // children are too deep to be rendered
                            $accept = true;
                        }
                    }
                }

                if (!$accept) {
                    continue;
                }
            }

            // make sure indentation is correct
            $depth -= $minDepth;
            $myIndent = $indent . str_repeat('        ', $depth);

            if ($depth > $prevDepth) {
                // start new ul tag
                if ($ulClass && $depth ==  0) {
                    $ulClass = ' class="' . $ulClass . '"';
                } else {
                    $ulClass = '';
                }
                $html .= $myIndent . '<ul' . $ulClass . '>' . self::EOL;
            } else if ($prevDepth > $depth) {
                // close li/ul tags until we're at current depth
                for ($i = $prevDepth; $i > $depth; $i--) {
                    $ind = $indent . str_repeat('        ', $i);
                    $html .= $ind . '    </li>' . self::EOL;
                    $html .= $ind . '</ul>' . self::EOL;
                }
                // close previous li tag
                $html .= $myIndent . '    </li>' . self::EOL;
            } else {
                // close previous li tag
                $html .= $myIndent . '    </li>' . self::EOL;
            }

            // render li tag and page
            $liClass = $isActive ? ' class="active"' : '';
            $html .= $myIndent . '    <li' . $liClass . '>' . self::EOL
                   . $myIndent . '        ' . $this->htmlify($page) . self::EOL;

            // store as previous depth for next iteration
            $prevDepth = $depth;
        }

        if ($html) {
            // done iterating container; close open ul/li tags
            for ($i = $prevDepth+1; $i > 0; $i--) {
                $myIndent = $indent . str_repeat('        ', $i-1);
                $html .= $myIndent . '    </li>' . self::EOL
                       . $myIndent . '</ul>' . self::EOL;
            }
            $html = rtrim($html, self::EOL);
        }

        return $html;
    }

    /**
     * Renders helper
     *
     * Renders a HTML 'ul' for the given $container. If $container is not given,
     * the container registered in the helper will be used.
     *
     * Available $options:
     *
     *
     * @param  Zend_Navigation_Container $container  [optional] container to
     *                                               create menu from. Default
     *                                               is to use the container
     *                                               retrieved from
     *                                               {@link getContainer()}.
     * @param  array                     $options    [optional] options for
     *                                               controlling rendering
     * @return string                                rendered menu
     */
    public function renderMenu(Zend_Navigation_Container $container = null,
                               array $options = array())
    {
        if (null === $container) {
            $container = $this->getContainer();
        }

        $options = $this->_normalizeOptions($options);

        if ($options['onlyActiveBranch'] && !$options['renderParents']) {
            $html = $this->_renderDeepestMenu($container,
                                              $options['ulClass'],
                                              $options['indent'],
                                              $options['minDepth'],
                                              $options['maxDepth']);
        } else {
            $html = $this->_renderMenu($container,
                                       $options['ulClass'],
                                       $options['indent'],
                                       $options['minDepth'],
                                       $options['maxDepth'],
                                       $options['onlyActiveBranch']);
        }

        return $html;
    }

    /**
     * Renders the inner-most sub menu for the active page in the $container
     *
     * This is a convenience method which is equivalent to the following call:
     * <code>
     * renderMenu($container, array(
     *     'indent'           => $indent,
     *     'ulClass'          => $ulClass,
     *     'minDepth'         => null,
     *     'maxDepth'         => null,
     *     'onlyActiveBranch' => true,
     *     'renderParents'    => false
     * ));
     * </code>
     *
     * @param  Zend_Navigation_Container $container  [optional] container to
     *                                               render. Default is to render
     *                                               the container registered in
     *                                               the helper.
     * @param  string                    $ulClass    [optional] CSS class to
     *                                               use for UL element. Default
     *                                               is to use the value from
     *                                               {@link getUlClass()}.
     * @param  string|int                $indent     [optional] indentation as
     *                                               a string or number of
     *                                               spaces. Default is to use
     *                                               the value retrieved from
     *                                               {@link getIndent()}.
     * @return string                                rendered content
     */
    public function renderSubMenu(Zend_Navigation_Container $container = null,
                                  $ulClass = null,
                                  $indent = null)
    {
        return $this->renderMenu($container, array(
            'indent'           => $indent,
            'ulClass'          => $ulClass,
            'minDepth'         => null,
            'maxDepth'         => null,
            'onlyActiveBranch' => true,
            'renderParents'    => false
        ));
    }

    /**
     * Renders the given $container by invoking the partial view helper
     *
     * The container will simply be passed on as a model to the view script
     * as-is, and will be available in the partial script as 'container', e.g.
     * <code>echo 'Number of pages: ', count($this->container);</code>.
     *
     * @param  Zend_Navigation_Container $container  [optional] container to
     *                                               pass to view script. Default
     *                                               is to use the container
     *                                               registered in the helper.
     * @param  string|array             $partial     [optional] partial view
     *                                               script to use. Default is to
     *                                               use the partial registered
     *                                               in the helper. If an array
     *                                               is given, it is expected to
     *                                               contain two values; the
     *                                               partial view script to use,
     *                                               and the module where the
     *                                               script can be found.
     * @return string                                helper output
     */
    public function renderPartial(Zend_Navigation_Container $container = null,
                                  $partial = null)
    {
        if (null === $container) {
            $container = $this->getContainer();
        }

        if (null === $partial) {
            $partial = $this->getPartial();
        }

        if (empty($partial)) {
            require_once 'Zend/View/Exception.php';
            $e = new Zend_View_Exception(
                'Unable to render menu: No partial view script provided'
            );
            $e->setView($this->view);
            throw $e;
        }

        $model = array(
            'container' => $container
        );

        if (is_array($partial)) {
            if (count($partial) != 2) {
                require_once 'Zend/View/Exception.php';
                $e = new Zend_View_Exception(
                    'Unable to render menu: A view partial supplied as '
                    .  'an array must contain two values: partial view '
                    .  'script and module where script can be found'
                );
                $e->setView($this->view);
                throw $e;
            }

            return $this->view->partial($partial[0], $partial[1], $model);
        }

        return $this->view->partial($partial, null, $model);
    }

    // Zend_View_Helper_Navigation_Helper:

    /**
     * Renders menu
     *
     * Implements {@link Zend_View_Helper_Navigation_Helper::render()}.
     *
     * If a partial view is registered in the helper, the menu will be rendered
     * using the given partial script. If no partial is registered, the menu
     * will be rendered as an 'ul' element by the helper's internal method.
     *
     * @see renderPartial()
     * @see renderMenu()
     *
     * @param  Zend_Navigation_Container $container  [optional] container to
     *                                               render. Default is to
     *                                               render the container
     *                                               registered in the helper.
     * @return string                                helper output
     */
    public function render(Zend_Navigation_Container $container = null)
    {
        if ($partial = $this->getPartial()) {
            return $this->renderPartial($container, $partial);
        } else {
            return $this->renderMenu($container);
        }
    }
}