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hierarcy navigation - PHP with frames
this example from a Well House Consultants training course
Source code: framed_dpd.php4 Module: W507
<?php
$making = "whc_outline"; if ($_GET[frame] == "whc_top") $making = "whc_top"; if ($_GET[frame] == "whc_left") $making = "whc_left"; if ($_GET[frame] == "whc_right") $making = "whc_right"; if ($_GET[frame] == "whc_bottom") $making = "whc_bottom"; if ($_GET[done]) $making = "report"; # Demonstration of navigating through a directory hierarcy # Uses sessions so that several visitors can be selecting at the same time session_start(); $_SESSION[history] .= " $making "; function expand_dir($sd,$nlev) { global $tree; $contains = opendir($sd); while ($current = readdir($contains)) { if (ereg('^\.',$current)) continue; $full = "$sd/$current"; if (is_dir($full)) { array_push($tree,"$nlev 1 0 $full"); expand_dir($full,$nlev+1); } else { array_push($tree,"$nlev 0 0 $full"); } } } # If this is a new session, set up the directory tree with nothing selected if (! $_SESSION[running]) { $source = "../../trainee"; $tree = array("0 1 1 $source"); expand_dir($source,1); $_SESSION[tree] = $tree; $_SESSION[running] = 1; } # Deal with any selection / deselection items if ($making == "whc_outline" or $_GET[trigger]) { $elat = -1; if ($_GET[ac] != "") { for ($k=0; $k<count($_SESSION[tree]); $k++) { list($level,$isdir,$shown,$value) = explode(" ",$_SESSION[tree][$k]); if ($value == $_GET[el]) { $shown = ($_GET[ac] == "ex") ? 1 : 0; $_SESSION[tree][$k] = implode(" ",array($level, $isdir, $shown, $value)); $elat = $k; } } } $_SESSION[elat] = $elat; } # Parse data, making up offer tree and selected HTML strings $showing = 0; $position = 0; $hvname=0; $chosen = array(); $offer = array(); foreach ($_SESSION[tree] as $element) { $position++; $bold = 0; list($level,$isdir,$shown,$value) = explode(" ",$element); if ($isdir) { if ($shown) { $showing = 1; $flag = "<a href=$PHP_SELF?ac=sh&el=$value&frame=whc_left&trigger=1#here>-</a>"; } else { $flag = "<a href=$PHP_SELF?ac=ex&el=$value&frame=whc_left&trigger=1#here>+</a>"; $showing = 0; } if (! $level) $flag = " "; } else { if ($shown) { $flag = "<a href=$PHP_SELF?ac=sh&el=$value target=_top>DeSelect</a>"; array_push($chosen,$value); $bold = 1; } else { $flag = "<a href=$PHP_SELF?ac=ex&el=$value target=_top>Select</a>"; } } $prefix = str_repeat(" ",$level * 2+(2-$isdir)); $mrs = ""; if ($isdir or $shown or $showing) { # following line need revisiting - when do subdirectories show?? # if (! ($isdir == 1 and $shown == 0 and $level > 0)) { # Test if ($hvname == 0 and $position > $_SESSION[elat] and $_SESSION[elat] >= 0) { $value = "<a name=here>$value</a>"; $mrs = " <------- most recent selection"; $hvname = 1; } if ($bold == 0) { array_push($offer,"$prefix $flag $value $mrs"); } else { array_push($offer,"$prefix $flag <b>$value</b> $mrs"); } } # } } $word = "Currenly"; if ($_GET[done]) { $freport = "You have selected ".count($chosen)." item(s)<br><br>"; foreach ($chosen as $item) { $owbig = filesize($item); $freport .= "$item which is $owbig bytes in size<br>"; } session_destroy(); $word = "Finally"; } ######################################## Response page #################################### if ($making == "whc_outline") { ?> <html><head><title>File Selector System USING FRAMES</title></head> <frameset rows="100,*,100"> <frame src=<?=$PHP_SELF?>?frame=whc_top name=whc_top> <frameset cols="66%,*"> <frame src=<?=$PHP_SELF?>?frame=whc_left#here name=whc_left> <frame src=<?=$PHP_SELF?>?frame=whc_right name=whc_right> </frameset> <frame src=<?=$PHP_SELF?>?frame=whc_bottom name=whc_bottom> </frameset> <?php ########################################################################################## } elseif ($making == "whc_top") { ?> <html><head><title>File Selector System - top frame</title></head> <body>This demonstration lets you navigate through a directory tree, expanding and contracting directories and selecting files of your choosing. When you select the DONE button, you'll get a report of all the items selected in more detail.</body> <?php ########################################################################################## } elseif ($making == "whc_right") { ?> <html><head><title>File Selector System - right frame</title></head><body> <b><?= $word ?> Selected</b><br> <?php if (count($chosen)) { print (implode("<br>",$chosen)); } else { print "No selections yet made"; } ?></body> <?php ########################################################################################## } elseif ($making == "whc_left") { ?> <html><head><title>File Selector System - right frame</title></head><body> <b>Selection Menu</b><br> <?= implode("<br>",$offer); ?></body> <?php ########################################################################################## } elseif ($making == "whc_bottom") { ?> <html><head><title>File Selector System - bottom frame</title></head><body> Please select <a href=<?= $PHP_SELF ?>?done=1 target=_top>done</a> or make (further) choices from the left selector box<br><br> Example by Well House Consultants, Copyright <?= date("Y") ?> <br>Want to know how to do this? <a href=http://www.wellho.net/course/ph.html>Learn Here!</a> </body> <?php ########################################################################################## } else { # result report ?> <html><head> <title>Report on your selection</title> </head><body> <h2>Here are the examples that you chose</h2> <?=$freport?><br> <a href=<?=$PHP_SELF?>>Restart demo</a><br> <a href=http://www.wellho.net>Our Home Page</a><br><br> Example by Well House Consultants, Copyright <?= date("Y") ?> <br>Want to know how to do this? <a href=http://www.wellho.net/course/ph.html>Learn Here!</a> </body> <?php } ?> </html> Learn about this subject
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