User:Proteins/unindent.js

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Documentation for this user script can be added at User:Proteins/unindent.

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//<pre>
// Unindent discusions for accessibility
 
function unindent() {
	var alert_string = "";
	var diagnostic_string = "";

	var indent_level = 0;

	var DL_elements;
	var num_DL_elements = 0;

	var DT_elements;
	var num_DT_elements = 0;

	var DD_elements;
	var temp_DD_element;
	var num_DD_elements = 0;
	var DD_element_index = 0;
	var num_unindented_DD_elements = 0;

	var top_node;
	var parent_node;
	var top_DL_node;

	// Colors to help sighted people after the unindenting
	var DD_background_colors = ["black", "red", "blue", "green", "magenta", "cyan", "orange", "purple", "darkgreen", "brown"];


	top_node = document.getElementById('bodyContent');
	DD_elements = top_node.getElementsByTagName("DD");

	diagnostic_string = "";
	num_DD_elements = DD_elements.length;
	for (DD_element_index=0; DD_element_index<num_DD_elements; DD_element_index++) { 
		temp_DD_element = DD_elements[DD_element_index];

		indent_level = 0;

		// Find the topmost DL element for this DD node
		top_DL_node = null;
		parent_node = temp_DD_element.parentNode;

		while ((parent_node) && (parent_node != top_node)) {
			if (parent_node.nodeType != 1) {
				parent_node = parent_node.parentNode;
				continue; 
			} // examine only Element nodes

			if (parent_node.nodeName == "DL") { 
				// Check whether the parent DL element has any DT elements
				num_DT_elements = parent_node.getElementsByTagName("DT").length;
				if (num_DT_elements > 0) { break; } // if so, stop unindenting...

				// ...else make this the new indent level
				indent_level++;
				top_DL_node = parent_node;
			} // closes check for a parental DL element

			parent_node = parent_node.parentNode;
		} // closes loop climbing up the document tree

		if (indent_level > 0) { 
			num_unindented_DD_elements++;
			temp_DD_element.style.cssText = "background-color:" + DD_background_colors[indent_level];
			diagnostic_string += "DD element " + DD_element_index + " is indented to level " + indent_level + ".\n";
		}

	} // closes loop over the DD elements of the document
	window.alert(diagnostic_string);

//Acknowledgment
	alert_string = "Unindented " + num_unindented_DD_elements + " paragraphs of " + num_DD_elements + " possible.";
	window.alert(alert_string);

} // closes unindent() function

addOnloadHook(function () {
            addPortletLink('p-cactions', 'javascript:unindent()', 'unindent', 'ca-unindent', 'Unindent discussions', '', '');
});
 
//</pre>