From 6152606bb3ce82577b473370fc4b6ad6b48c1eb9 Mon Sep 17 00:00:00 2001
From: Florian Forster <ff@octo.it>
Date: Wed, 30 Jun 2010 16:50:45 +0200
Subject: [PATCH] share/collection.js: Imported most of the JavaScript
 navigation code from collection3.

---
 share/collection.js | 146 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 136 insertions(+), 10 deletions(-)

diff --git a/share/collection.js b/share/collection.js
index d3fb11c..a15a096 100644
--- a/share/collection.js
+++ b/share/collection.js
@@ -51,6 +51,115 @@ function update_search_suggestions ()
   );
 } /* update_search_suggestions */
 
+function zoom_redraw (jq_obj)
+{
+  var url = jq_obj.data ("base_url");
+
+  if ((jq_obj == null) || (url == null))
+    return (false);
+
+  if (jq_obj.data ('begin') != null)
+    url += ";begin=" + jq_obj.data ('begin');
+  if (jq_obj.data ('end') != null)
+    url += ";end=" + jq_obj.data ('end');
+
+  jq_obj.attr ("src", url);
+  return (true);
+}
+
+function zoom_reset (graph_id, diff)
+{
+  var jq_obj;
+  var end;
+  var begin;
+
+  jq_obj = $("#" + graph_id);
+  if (jq_obj == null)
+    return (false);
+
+  end = new Number ((new Date ()).getTime () / 1000);
+  begin = new Number (end - diff);
+
+  jq_obj.data ('begin', begin.toFixed (0));
+  jq_obj.data ('end', end.toFixed (0));
+
+  return (zoom_redraw (jq_obj));
+}
+
+function zoom_hour (graph_id)
+{
+  zoom_reset (graph_id, 3600);
+}
+
+function zoom_day (graph_id)
+{
+  zoom_reset (graph_id, 86400);
+}
+
+function zoom_week (graph_id)
+{
+  zoom_reset (graph_id, 7 * 86400);
+}
+
+function zoom_month (graph_id)
+{
+  zoom_reset (graph_id, 31 * 86400);
+}
+
+function zoom_year (graph_id)
+{
+  zoom_reset (graph_id, 366 * 86400);
+}
+
+function zoom_relative (graph_id, factor_begin, factor_end)
+{
+  var jq_obj;
+  var end;
+  var begin;
+  var diff;
+
+  jq_obj = $("#" + graph_id);
+  if (jq_obj == null)
+    return (false);
+
+  begin = jq_obj.data ('begin');
+  end = jq_obj.data ('end');
+  if ((begin == null) || (end == null))
+    return (zoom_day (graph_id));
+
+  begin = new Number (begin);
+  end = new Number (end);
+
+  diff = end - begin;
+  if ((diff <= 300) && (factor_begin > 0.0) && (factor_end < 0.0))
+    return (true);
+
+  jq_obj.data ('begin', begin + (diff * factor_begin));
+  jq_obj.data ('end', end + (diff * factor_end));
+
+  return (zoom_redraw (jq_obj));
+}
+
+function zoom_earlier (graph_id) /* {{{ */
+{
+  return (zoom_relative (graph_id, -0.2, -0.2));
+} /* }}} function zoom_earlier */
+
+function zoom_later (graph_id) /* {{{ */
+{
+  return (zoom_relative (graph_id, +0.2, +0.2));
+} /* }}} function zoom_later */
+
+function zoom_in (graph_id) /* {{{ */
+{
+  return (zoom_relative (graph_id, +0.2, -0.2));
+} /* }}} function zoom_earlier */
+
+function zoom_out (graph_id) /* {{{ */
+{
+  return (zoom_relative (graph_id, (-1.0 / 3.0), (1.0 / 3.0)));
+} /* }}} function zoom_earlier */
+
 $(document).ready(function() {
     /* $("#layout-middle-right").html ("<ul id=\"search-suggest\" class=\"graph_list\"></ul>"); */
     $("#search-form").append ("<ul id=\"search-suggest\" class=\"graph_list\"></ul>");
@@ -82,21 +191,38 @@ $(document).ready(function() {
       update_search_suggestions ();
     });
 
-    $(".graph-img").append ("<div class=\"graph-buttons presets\">"
-        + "<div class=\"graph-button\" >H</div>"
-        + "<div class=\"graph-button\" >D</div>"
-        + "<div class=\"graph-button\" >W</div>"
-        + "<div class=\"graph-button\" >M</div>"
-        + "<div class=\"graph-button\" >Y</div>"
+    var graph_count = 0;
+    $(".graph-img").each (function (index, elem)
+    {
+      var id = "graph" + graph_count;
+      graph_count++;
+
+      $(this).find ("img").each (function (img_index, img_elem)
+      {
+        var base_url;
+
+        $(this).attr ("id", id);
+
+        base_url = $(this).attr ("src").replace (/;(begin|end)=[^;]*/g, '');
+        $(this).data ("base_url", base_url);
+      });
+
+      $(this).append ("<div class=\"graph-buttons presets\">"
+        + "<div class=\"graph-button\" onClick=\"zoom_hour  ('"+id+"');\">H</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_day   ('"+id+"');\">D</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_week  ('"+id+"');\">W</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_month ('"+id+"');\">M</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_year  ('"+id+"');\">Y</div>"
         + "<div class=\"graph-button\" >!</div>"
         + "</div>"
         + "<div class=\"graph-buttons navigation\">"
-        + "<div class=\"graph-button\" >←</div>"
-        + "<div class=\"graph-button\" >−</div>"
-        + "<div class=\"graph-button\" >+</div>"
-        + "<div class=\"graph-button\" >→</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_earlier ('"+id+"');\">←</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_out     ('"+id+"');\">−</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_in      ('"+id+"');\">+</div>"
+        + "<div class=\"graph-button\" onClick=\"zoom_later   ('"+id+"');\">→</div>"
         + "</div>"
         );
+    });
 });
 
 /* vim: set sw=2 sts=2 et fdm=marker : */
-- 
2.30.2