Add machinery to allow app-specific help files.

--HG--
branch : xslt

common/components/chrome-data.js

@@ -94,6 +94,11 @@ function Liberator()
 {
     this.wrappedJSObject = this;
 
+    this.__defineGetter__("helpNamespaces", function () NAMESPACES ? NAMESPACES.slice() : null);
+    this.__defineSetter__("helpNamespaces", function (namespaces) {
+        if (!NAMESPACES)
+            NAMESPACES = Array.slice(namespaces)
+    });
     this.__defineGetter__("helpFiles", function () HELP_FILES ? HELP_FILES.slice() : null);
     this.__defineSetter__("helpFiles", function (files) {
         if (!HELP_FILES)
@@ -124,8 +129,10 @@ function Liberator()
         catch (e) {}
     }
 
-    const HELP_TAGS = {};
-    this.HELP_TAGS = HELP_TAGS;
+    const self = this;
+    this.HELP_TAGS = {};
+    this.FILE_MAP = {};
+    var NAMESPACES = null;
     var HELP_FILES = null;
 
     function parseHelpTags(files)
@@ -134,12 +141,26 @@ function Liberator()
         XSLT.importStylesheet(httpGet("chrome://liberator/content/help.xsl").responseXML);
         for each (let file in files)
         {
-            let res = httpGet("liberator://help/" + file);
-            if (res)
+            try
             {
+                for each (let namespace in NAMESPACES)
+                {
+                    let url = ["chrome://", namespace, "/locale/", file, ".xml"].join("");
+                    let res = httpGet(url);
+                    if (res && res.responseXML.documentElement.localName == "document")
+                    {
+                        self.FILE_MAP[file] = url;
                         let doc = XSLT.transformToDocument(res.responseXML);
                         for (let elem in xpath(doc, "//liberator:tag/text()"))
-                    HELP_TAGS[elem.textContent] = file;
+                            self.HELP_TAGS[elem.textContent] = file;
+                        break;
+                    }
+                }
+            }
+            catch (e)
+            {
+                Components.utils.reportError(e);
+                dump(e);
             }
         }
         HELP_FILES = Array.slice(files);
@@ -184,14 +205,19 @@ Liberator.prototype = {
             switch(uri.host)
             {
                 case "help":
-                    return makeChannel("chrome://liberator/locale" + uri.path.replace(/#.*/, "") + ".xml", uri);
+                    let url = this.FILE_MAP[uri.path.replace(/^\/|#.*/g, "")];
+                    dump("name: " + uri.path.replace(/#.*/, "") + "\n");
+                    dump("uri: " + url + "\n");
+                    if (!url)
+                        break;
+                    return makeChannel(url, uri);
                 case "help-tag":
                     let tag = uri.path.substr(1);
                     if (tag in this.HELP_TAGS)
                         return redirect("liberator://help/" + this.HELP_TAGS[tag] + "#" + tag, uri);
             }
         }
-        catch (e) { dump(e + "\n"); dump(e.stack); }
+        catch (e) {}
         return fakeChannel(uri);
     }
 };

common/content/help.xsl

@@ -11,7 +11,7 @@
     <xsl:output method="xml"/>
 
     <xsl:variable name="local" select="concat('chrome://&liberator.name;/locale/', /liberator:document/@name, '.xml')"/>
-    <xsl:variable name="localdoc" select="document($local)/liberator:document"/>
+    <xsl:variable name="localdoc" select="document($local)/liberator:overlay"/>
 
     <xsl:template match="liberator:document">
         <html:html liberator:highlight="Help">
@@ -156,6 +156,12 @@
         </xsl:for-each>
     </xsl:template>
 
+    <xsl:template match="liberator:document/liberator:tags|liberator:document/liberator:tag">
+        <xsl:call-template name="splice-locals">
+            <xsl:with-param name="tag" select="substring-before(concat(., ' '), ' ')"/>
+            <xsl:with-param name="elem" select="self::node()"/>
+        </xsl:call-template>
+    </xsl:template>
     <xsl:template match="liberator:document/*[liberator:tags]">
         <xsl:call-template name="splice-locals">
             <xsl:with-param name="tag" select="substring-before(concat(liberator:tags, ' '), ' ')"/>

common/content/liberator.js

@@ -1724,6 +1724,7 @@ const liberator = (function () //{{{
             let start = Date.now();
             liberator.log("Initializing liberator object...", 0);
 
+            services.get("liberator:").helpNamespaces = [config.name.toLowerCase(), "liberator"];
             services.get("liberator:").helpFiles = config.helpFiles.map(function (f) f.replace(/\..*/, ""));
 
             config.features.push(getPlatformFeature());