From 3fd57f5e9e9fd7cdabb3bc5645f28e211198df35 Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@drexel.edu>
Date: Sat, 17 Jul 2010 20:07:48 -0400
Subject: [PATCH] Added working RDF refresh.

The previous Components.classes approach required chrome:// permissions.

Also took a stab at updating the checkboxes when we reload data or
change the currently selected file.  I think I'm writing the correct
value, but the checkboxes are not being displayed...
---
 static/dirtag.js    | 73 +++++++++++++++++++++++++++++++++++----------
 template/dirtag.xul |  4 +--
 2 files changed, 60 insertions(+), 17 deletions(-)

diff --git a/static/dirtag.js b/static/dirtag.js
index 47f63d4..b6f5373 100644
--- a/static/dirtag.js
+++ b/static/dirtag.js
@@ -1,5 +1,14 @@
 /* Useful helper functions */
 
+function tree_tags(tree, row) {
+    var ctags = tree.columns.getLastColumn();
+    var tags = tree.view.getCellText(row, ctags).split(',');
+    for (var i=0; i<tags.length; i++) {
+	tags[i] = tags[i].split('/');
+    }
+    return tags;
+}
+
 function tree_path(tree, row) {
     var name = tree.columns.getPrimaryColumn();
     var path = new Array();
@@ -12,26 +21,49 @@ function tree_path(tree, row) {
 
 function tree_selection(id) {
     var tree = document.getElementById(id);
-    return tree_path(tree, tree.currentIndex);
+    return [tree_path(tree, tree.currentIndex),
+	    tree_tags(tree, tree.currentIndex),];
+}
+
+function tag_in_tags(tag, tags) {
+    /* Convert a regular array into an associative array for 'in' comparisons
+         http://snook.ca/archives/javascript/testing_for_a_v
+    */
+    var o = {};
+    for(var i=0; i<tags.length; i++) {
+	o[tags[i].join('/')] = '';  // .join('/') b/c indexes must be strings
+    }
+    return tag.join('/') in o;
+}
+
+function setup_checkboxes(tags) {
+    var tree = document.getElementById('checkbox-tree');
+    var ctags = tree.columns.getLastColumn();
+    for (var row=0; row<tree.view.rowCount; row++) {
+	p = tree_path(tree, row);
+	tree.view.origSetCellValue(row, ctags, tag_in_tags(p, tags));
+    }
+    tree.treeBoxObject.invalidateColumn(ctags);
 }
 
 /* Functions driving the CherryPy backend */
 
 function reload_rdf(e) {
-    /* https://developer.mozilla.org/en/RDF_in_Mozilla_FAQ */
+    /* https://developer.mozilla.org/en/RDF_in_Mozilla_FAQ
+       https://developer.mozilla.org/en/XUL/Template_Guide/Template_Builder_Interface
+     */
     if (e.readyState == 4) { /* 4: request finished and response is ready */
 	if(e.status != 200) {
 	    alert("Error loading page\n\n"+e.responseText);
 	    return;
 	}
-	// Get the RDF service
-	var RDF =
-	    Components
-	    .classes['@mozilla.org/rdf/rdf-service;1']
-	    .getService(Components.interfaces.nsIRDFService);
-	// Get the datasources and refresh them
-	RDF.GetDataSource('raw.rdf').Refresh('non-blocking');
-	RDF.GetDataSource('tag.rdf').Refresh('non-blocking');
+	document.getElementById('raw-tree').builder.refresh();
+	document.getElementById('tag-tree').builder.refresh();
+	document.getElementById('checkbox-tree').builder.refresh();
+
+	var id = document.getElementById('element').tree_id;
+	var path_tags = tree_selection(id);
+	setup_checkboxes(path_tags[1]);
     }
 }
 
@@ -60,7 +92,7 @@ function remove_tag(path, tag) {
 /* The bindings themselves */
 
 function initialize() {
-    element = document.getElementById('element').file_path = 'UNDEFINED';
+    document.getElementById('element').file_path = 'UNDEFINED';
     var tree = document.getElementById('checkbox-tree');
     tree.view.origSetCellValue = tree.view.setCellValue;
     tree.view.setCellValue = function (row, col, value) {
@@ -74,17 +106,28 @@ function new_tag_button() {
     new_tag(text.split('/'));
 }
 
-function set_selected_element(path) {
-    element = document.getElementById('element');
+function set_selected_element(path, tags, id) {
+    var caption = document.getElementById('selected-caption');
+    var title = caption.label.split(':', 1)[0];
+    caption.label = title+': '+path.join('/');
+
+    setup_checkboxes(tags);
+
+    var element = document.getElementById('element');
     element.file_path = path;
+    element.file_tags = tags;
+    element.tree_id = id;
+    // element.source = ...
 }
 
 function raw_tree_select() {
-    set_selected_element(tree_selection('raw-tree'));
+    var path_tags = tree_selection('raw-tree');
+    set_selected_element(path_tags[0], path_tags[1], 'raw-tree');
 }
 
 function tag_tree_select() {
-    set_selected_element(tree_selection('tag-tree'));
+    var path_tags = tree_selection('tag-tree');
+    set_selected_element(path_tags[0], path_tags[1], 'tag-tree');
 }
 
 function checkbox_activity(tree, row, col, value) {
diff --git a/template/dirtag.xul b/template/dirtag.xul
index a6d6920..26b1457 100644
--- a/template/dirtag.xul
+++ b/template/dirtag.xul
@@ -107,7 +107,7 @@
     </groupbox>
     <splitter collapse="before"><grippy/></splitter>
     <groupbox id="selected" flex="2" orient="horizontal">
-      <caption label="&selected.caption;"/>
+      <caption id="selected-caption" label="&selected.caption;"/>
       <groupbox id="tags" flex="1">
 	<caption label="&tags.caption;"/>
 	<tree id="checkbox-tree" rows="2" seltype="single" selstype="primary"
@@ -129,7 +129,7 @@
 	      <treechildren>
 		<treeitem uri="rdf:*" open="true">
 		  <treerow>
-		    <treecell value="true" editable="true"/>
+		    <treecell editable="true"/>
 		    <treecell label="rdf:http://dirtag.com/rdf#name"/>
 		  </treerow>
 		</treeitem>
-- 
2.26.2