From bd1f3efd476122b5d6c79e881b6f1017c8771713 Mon Sep 17 00:00:00 2001
From: Stefan Thomas <moon@justmoon.de>
Date: Fri, 25 Dec 2009 19:49:22 +0000
Subject: [PATCH] Added configuration node collapse behavior.

---
 class.krumo.php | 131 +++++++++++++++++++++++++++++++++++-------------
 1 file changed, 96 insertions(+), 35 deletions(-)

diff --git a/class.krumo.php b/class.krumo.php
index 7f0534a..8629e09 100755
--- a/class.krumo.php
+++ b/class.krumo.php
@@ -610,7 +610,7 @@
 	/**
 	 * Configuration array.
 	 */
-	static $_config = array();
+	Private Static $_config = array();
 
 	/**
 	* Returns values from Krumo's configuration
@@ -644,6 +644,47 @@
 		}
 
 	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
+
+	/**
+	* Cascade configuration array
+	*
+	* By default, all nodes are collapsed.
+	*/
+	Private Static $_cascade = array(0);
+	
+	/**
+	* Set a cascade configuration array.
+	*
+	* Each value in the array is the maximum number of entries that node can
+	* have before it is being collapsed. The last value is repeated for all
+	* further levels.
+	*
+	* Example:
+	* array(10,5,0) - Nodes from the first level are expanded if they have less
+	*                 than 10 child nodes. Nodes from the second level are ex-
+	*                 panded if they have less then 5 nodes and all lower levels
+	*                 are collapsed.
+	*
+	* @param array $cascade Cascading information
+	* @access public
+	* @static
+	*/
+	Public Static Function cascade($cascade) {
+		self::$_cascade = $cascade;
+		}
+
+	/**
+	* Determines if a given node will be collapsed or not.
+	*/
+	Private Static Function _isCollapsed($level, $childCount) {
+		if (isset(self::$_cascade[$level])) {
+			return $childCount > self::$_cascade[$level];
+		} else {
+			return $childCount > end(self::$_cascade);
+		}
+		}
+
+	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
 
 	/**
 	* Print the skin (CSS)
@@ -922,6 +963,11 @@
 		}
 	
 	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
+
+	/**
+	* Level of recursion.
+	*/
+	Private Static $_level = 0;
 
 	/**
 	* Render a dump for the properties of an array or objeect
@@ -954,41 +1000,48 @@
 		krumo::_hive($data);
 
 		// render it
-		//
+		//
+		$collapsed = krumo::_isCollapsed(self::$_level, count($data)-1);
 		?>
-<div class="krumo-nest" style="display:none;">
+<div class="krumo-nest"<?php if ($collapsed): ?> style="display:none;"<?php endif;?>>
 	<ul class="krumo-node">
-	<?php
+		<?php
 
-	// keys ?
-	//
-	$keys = ($_is_object)
-		? array_keys(get_object_vars($data))
-		: array_keys($data);
+		// keys ?
+		//
+		$keys = ($_is_object)
+			? array_keys(get_object_vars($data))
+			: array_keys($data);
+	
+		// we're decending one level deeper
+		self::$_level++;
 	
-	// itterate 
-	//
-	foreach($keys as $k) {
-
-		// skip marker
+		// itterate 
 		//
-		if ($k === $_recursion_marker) {
-			continue;
-			}
+		foreach($keys as $k) {
+
+			// skip marker
+			//
+			if ($k === $_recursion_marker) {
+				continue;
+				}
 		
-		// get real value
-		//
-		if ($_is_object) {
-			$v =& $data->$k;
-			} else {
-			$v =& $data[$k];
-			}
+			// get real value
+			//
+			if ($_is_object) {
+				$v =& $data->$k;
+				} else {
+				$v =& $data[$k];
+				}
 
-		krumo::_dump($v,$k);
-		} ?>
+			krumo::_dump($v,$k);
+			} ?>
 	</ul>
 </div>
-<?php
+<?php
+	
+		// back up one level
+		self::$_level--;
 		}
 
 	// -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
@@ -1027,12 +1080,16 @@
 	* @access private
 	* @static
 	*/
-	Private Static Function _array(&$data, $name) {
+	Private Static Function _array(&$data, $name) {
+		$childCount = count($data);
+		$collapsed = krumo::_isCollapsed(self::$_level, count($data));
+		$elementClasses = ($childCount > 0) ? (
+				($collapsed) ? ' krumo-expand' : ' krumo-expand krumo-opened'
+			) : '';
 ?>
 <li class="krumo-child">
-	
-	<div class="krumo-element<?php echo count($data) > 0 ? ' krumo-expand' : '';?>"
-		<?php if (count($data) > 0) {?> onClick="krumo.toggle(this);"<?php } ?>
+	<div class="krumo-element<?php echo $elementClasses; ?>"
+		<?php if ($childCount > 0) {?> onClick="krumo.toggle(this);"<?php } ?>
 		onMouseOver="krumo.over(this);"
 		onMouseOut="krumo.out(this);">
 		
@@ -1078,12 +1135,16 @@
 	* @access private
 	* @static
 	*/
-	Private Static Function _object(&$data, $name) {
+	Private Static Function _object(&$data, $name) {
+		$childCount = count($data);
+		$collapsed = krumo::_isCollapsed(self::$_level, count($data));
+		$elementClasses = ($childCount > 0) ? (
+				($collapsed) ? ' krumo-expand' : ' krumo-expand krumo-opened'
+			) : '';
 ?>
 <li class="krumo-child">
-
-	<div class="krumo-element<?php echo count($data) > 0 ? ' krumo-expand' : '';?>"
-		<?php if (count($data) > 0) {?> onClick="krumo.toggle(this);"<?php } ?>
+	<div class="krumo-element<?php echo $elementClasses; ?>"
+		<?php if ($childCount > 0) {?> onClick="krumo.toggle(this);"<?php } ?>
 		onMouseOver="krumo.over(this);"
 		onMouseOut="krumo.out(this);">