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[mkdru-moved-to-drupal.org.git] / mkdru.client.js

diff --git a/mkdru.client.js b/mkdru.client.js
index ce5637e..a80a58d 100644 (file)
--- a/mkdru.client.js
+++ b/mkdru.client.js
@@ -34,12 +34,11 @@ var mkdru = {
       limiter: 'au'
     }
   },
-  // State
+  // State; Keys limit_{facet key} will also be initialised
   defaultState: {
     page: 1,
     perpage: 20,
     sort: 'relevance',
-    filter: null,
     query:'',
     recid:null
   },
@@ -138,16 +137,12 @@ mkdru.contains = function (hash, key, value) {
 }
 
 mkdru.pz2Term = function (data) {
-  // if signaled, prepare container client-side
-  if (mkdru.facetContainerSelector) {
-    $(mkdru.facetContainerSelector).html(Drupal.theme('mkdruFacetContainer',
-      data, mkdru.facets));
-  }
   // map all facets against selected, for simple rendering 
   var hash = $.deparam.fragment();
   for (var key in hash) {
-    if (key.indexOf('limit') == 0) //always wrap in array
-      hash[key.substr(6)] = hash[key].split(';');
+    if (key.indexOf('limit') == 0 && hash[key]) 
+      //always wrap in array
+      hash[key.substr(6)] = hash[key].split(/;+/);
     delete hash[key];
   }
   for (var facet in mkdru.facets) {
@@ -164,7 +159,8 @@ mkdru.pz2Term = function (data) {
       }
     }
     $('.mkdru-facet-' + facet).html(
-        Drupal.theme('mkdruFacet', terms, facet, mkdru.facets[facet].max, hash));
+        Drupal.theme('mkdruFacet', terms, facet, mkdru.facets[facet].max, 
+          hash[facet]));
   }
 };
 
@@ -228,21 +224,28 @@ mkdru.uiFromState = function () {
 };
 
 mkdru.hashChange = function () {
+  // do we need to restart the search?
+  var searchTrigger = false;
+  // shallow copy of state so we can see what changed.
+  var oldState = $.extend({}, mkdru.state);
   mkdru.stateFromHash();
-  // Request for details
-  if (mkdru.state.recid) {
+  // only have to compare values since all keys are initialised
+  for (key in mkdru.state) {
+    var changed = (mkdru.state[key] != oldState[key]);
+    if (key.substring(0,5) === 'limit' && changed)
+      searchTrigger = true;
+    if (key === 'page' && changed)
+      mkdru.pz2.showPage(mkdru.state.page-1);
+    if (key === 'query' && changed)
+      searchTrigger = true;
+  }
+  if (searchTrigger)
+    mkdru.search();
+  // request for record detail
+  if (mkdru.state.recid && (mkdru.state.recid != oldState.recid)) {
     mkdru.pz2.record(mkdru.state.recid);
   }
-  // Other internal link
   else {
-    // may need to run search again to limit targets
-    for (key in mkdru.state) {
-      if (key.substring(0,5) === 'limit' && mkdru.state[key]) {
-        mkdru.search();
-        break;
-      }
-    }
-    mkdru.pz2.showPage(mkdru.state.page-1);
     $('.mkdru-detail').hide();
     $('.mkdru-results').show();
   }
@@ -266,7 +269,8 @@ mkdru.addLimit = function (facet, limit) {
 mkdru.removeLimit = function (facet, limit) {
   var newHash = $.deparam.fragment();
   delete newHash['page'];
-  if (!newHash['limit_' + facet].indexOf(';') || !mkdru.facets[facet].multiLimit) { 
+  if (!newHash['limit_' + facet].indexOf(';')
+      || !mkdru.facets[facet].multiLimit) {
     delete newHash['limit_' + facet];
   }
   else {
@@ -274,7 +278,10 @@ mkdru.removeLimit = function (facet, limit) {
     for (var i = 0; i < limits.length; i++) {
       if (limits[i] == limit) {
         limits.splice(i, 1);
-        newHash['limit_' + facet] = limits.join(';');
+        if (limits.length < 1)
+          delete newHash['limit_' + facet];
+        else
+          newHash['limit_' + facet] = limits.join(';');
         break;
       }
     }
@@ -320,11 +327,12 @@ mkdru.search = function () {
         filter = 'pz:id=' + mkdru.state.limit_source;
       }
       else {
-        var limits = mkdru.state['limit_' + facet].split(';');
+        var limits = mkdru.state['limit_' + facet].split(/;+/);
         for (var i = 0; i < limits.length; i++) {
           // ex. query + and au="{limit_author}"
-          query += ' and ' + mkdru.facets[facet]['limiter'] + '="'
-                  + mkdru.state['limit_' + facet] + '"';
+          if (limits[i]) 
+            query += ' and ' + mkdru.facets[facet]['limiter'] + '="'
+                  + limits[i] + '"';
         }
       }
     }
@@ -389,6 +397,12 @@ $(document).ready(function () {
     mkdru.defaultState['limit_' + key] = null;
   }
 
+  // if signaled, prepare facet container client-side
+  if (mkdru.facetContainerSelector) {
+    $(mkdru.facetContainerSelector).html(Drupal.theme('mkdruFacetContainer',
+      mkdru.facets));
+  }
+
   mkdru.pz2 = new pz2( { "onshow": mkdru.pz2Show,
               "showtime": 500, //each timer (show, stat, term, bytarget) can be specified this way
               "pazpar2path": mkdru.pazpar2Path,