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-rw-r--r--src/log2xml/treebits.js50
1 files changed, 50 insertions, 0 deletions
diff --git a/src/log2xml/treebits.js b/src/log2xml/treebits.js
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index 000000000000..ffd18fbb18ec
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+++ b/src/log2xml/treebits.js
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+/* Acknowledgement: this is based on the Wikipedia table-of-contents
+ * toggle. */
+
+
+var idCounter = 0;
+
+
+function showTreeToggle(show,hide) {
+    if (document.getElementById) {
+        var id = "toggle_" + idCounter;
+        document.writeln(
+            '<a href="javascript:toggleTree(\'' + id + '\')" class="toggle" id="' + id + '">' +
+            '<span class="showTree" style="display: none;">+</span>' +
+            '<span class="hideTree">-</span>' +
+            '</a>');
+        idCounter = idCounter + 1;
+    }
+}
+
+
+function toggleTree(id) {
+
+    var href = document.getElementById(id);
+
+    var node = href;
+    var tree = null;
+    while (node != null) {
+        if (node.className == "nesting") tree = node;
+        node = node.nextSibling;
+    }
+
+    node = href.firstChild;
+    var hideTree = null;
+    var showTree = null;
+    while (node != null) {
+        if (node.className == "showTree") showTree = node;
+        else if (node.className == "hideTree") hideTree = node;
+        node = node.nextSibling;
+    }
+    
+    if (tree.style.display == 'none') {
+        tree.style.display = '';
+        hideTree.style.display = '';
+        showTree.style.display = 'none';
+    } else {
+        tree.style.display = 'none';
+        hideTree.style.display = 'none';
+        showTree.style.display = '';
+    }
+}