/**
* WIDGET START
* 解析参数，收集widget所用到的静态资源
* @param $id
* @param $mode
* @param $group
* @return bool
*/
public static function start($id, $mode = null, $group = null)
{
$has_parent = !empty(self::$_context);
if ($mode) {
$widget_mode = self::_parseMode($mode);
} else {
$widget_mode = self::$mode;
}
self::$_pagelet_id = $id;
$parent_id = $has_parent ? self::$_context['id'] : '';
$qk_flag = self::$mode == self::MODE_QUICKLING ? '_qk_' : '';
$id = empty($id) ? '__elm_' . $parent_id . '_' . $qk_flag . self::$_session_id++ : $id;
$parent = self::$_context;
$has_parent = !empty($parent);
//$hit
$hit = true;
$context = array('id' => $id, 'mode' => $widget_mode, 'hit' => $hit);
if ($has_parent) {
$context['parent_id'] = $parent['id'];
self::$_contextMap[$parent['id']] = $parent;
}
if ($widget_mode == self::MODE_NOSCRIPT) {
//只有指定paglet_id的widget才嵌套一层div
if (self::$_pagelet_id) {
echo '<div id="' . $id . '">';
}
} else {
if ($widget_mode == self::MODE_BIGRENDER) {
//widget 为bigrender时，将内容渲染到html注释里面
if (!$has_parent) {
echo '<div id="' . $id . '">';
echo '<code class="g_bigrender"><!--';
}
} else {
echo '<div id="' . $id . '">';
}
if (self::$mode == self::MODE_QUICKLING) {
$hit = self::$filter[$id];
//如果父widget被命中，则子widget设置为命中
if ($has_parent && $parent['hit']) {
$hit = true;
} else {
if ($hit) {
//指定获取一个子widget时，需要单独处理这个widget
$context['parent_id'] = null;
$has_parent = false;
}
}
} else {
if ($widget_mode == self::MODE_QUICKLING) {
//渲染模式不是quickling时，可以认为是首次渲染
if (self::$_pagelet_id && self::$mode != self::MODE_QUICKLING) {
if (!$group) {
echo '<textarea class="g_fis_bigrender" style="display:none;">' . 'BigPipe.asyncLoad({id: "' . $id . '"});' . '</textarea>';
} else {
if (isset(self::$_pagelet_group[$group])) {
self::$_pagelet_group[$group][] = $id;
} else {
self::$_pagelet_group[$group] = array($id);
echo "<!--" . $group . "-->";
}
}
}
// 不需要渲染这个widget
$hit = false;
}
}
$context['hit'] = $hit;
if ($hit) {
if (!$has_parent) {
//获取widget内部的静态资源
FISResource::widgetStart();
}
//start a buffer
ob_start();
}
}
//设置当前处理context
self::$_context = $context;
return $hit;
}
/**
* WIDGET END
* 收集html，收集静态资源
*/
public static function end($id = null)
{
$ret = true;
$context = self::$_context;
$widget_mode = $context['mode'];
$has_parent = $context['parent_id'];
if ($id) {
self::$_pagelet_id = $id;
}
if ($widget_mode == self::MODE_NOSCRIPT) {
if (self::$_pagelet_id) {
echo '</div>';
}
} else {
if ($context['hit']) {
//close buffer
$html = ob_get_clean();
if (!$has_parent) {
$widget = FISResource::widgetEnd();
// end
if ($widget_mode == self::MODE_BIGRENDER) {
$widget_style = $widget['style'];
$widget_script = $widget['script'];
//内联css和script放到注释里面, 不需要收集
unset($widget['style']);
unset($widget['script']);
$out = '';
if ($widget_style) {
$out .= '<style type="text/css">' . implode('', $widget_style) . '</style>';
}
$out .= $html;
if ($widget_script) {
$out .= '<script type="text/javascript">' . implode('', $widget_script) . '</script>';
}
echo str_replace(array('\\', '-->'), array('\\\\', '--\\>'), $out);
$html = '';
echo '--></code></div>';
//收集外链的js和css
self::$inner_widget[self::$mode][] = $widget;
} else {
$context['html'] = $html;
//删除不需要的信息
unset($context['mode']);
unset($context['hit']);
//not parent
unset($context['parent_id']);
self::$_pagelets[] = $context;
self::$inner_widget[$widget_mode][] = $widget;
}
} else {
// end
if ($widget_mode == self::MODE_BIGRENDER) {
echo $html;
} else {
$context['html'] = $html;
//删除不需要的信息
unset($context['mode']);
unset($context['hit']);
self::$_pagelets[] = $context;
}
}
}
if ($widget_mode != self::MODE_BIGRENDER) {
echo '! MODE_BIGRENDER';
echo '</div>';
}
}
//切换context
self::$_context = self::$_contextMap[$context['parent_id']];
unset(self::$_contextMap[$context['parent_id']]);
if (!$has_parent) {
self::$_context = null;
}
return $ret;
}