From 936a005f9f3757508a06eaa930d5e5c4efcfbe40 Mon Sep 17 00:00:00 2001
From: Tom Hughes <tom@compton.nu>
Date: Tue, 19 Jul 2011 11:05:06 +0100
Subject: [PATCH] Implement a generic system for updating coordinates on links

---
 app/views/layouts/site.html.erb |  22 ++---
 app/views/site/index.html.erb   |   2 +-
 public/javascripts/site.js      | 141 ++++++++------------------------
 3 files changed, 44 insertions(+), 121 deletions(-)

diff --git a/app/views/layouts/site.html.erb b/app/views/layouts/site.html.erb
index 377cd8156..df99b51da 100644
--- a/app/views/layouts/site.html.erb
+++ b/app/views/layouts/site.html.erb
@@ -28,17 +28,17 @@
     <div>
       <ul id="tabnav">
         <%
-        viewclass = ''
-        editclass = 'disabled'
-        historyclass = ''
-        exportclass = ''
+        viewclass = 'geolink llz layers'
+        editclass = 'geolink llz object minzoom13 disabled'
+        historyclass = 'geolink bbox minzoom11'
+        exportclass = 'geolink llz layers'
         traceclass = ''
-        viewclass = 'active' if params['controller'] == 'site' and params['action'] == 'index' 
-        editclass = 'active' if params['controller'] == 'site' and params['action'] == 'edit' 
-        historyclass = 'active' if params['controller'] == 'changeset' and params['action'] == 'list' 
-        exportclass = 'active' if params['controller'] == 'site' and params['action'] == 'export'
-        traceclass = 'active' if params['controller'] == 'trace'
-        diaryclass = 'active' if params['controller'] == 'diary_entry'
+        viewclass += ' active' if params['controller'] == 'site' and params['action'] == 'index' 
+        editclass += ' active' if params['controller'] == 'site' and params['action'] == 'edit' 
+        historyclass += ' active' if params['controller'] == 'changeset' and params['action'] == 'list' 
+        exportclass += ' active' if params['controller'] == 'site' and params['action'] == 'export'
+        traceclass += ' active' if params['controller'] == 'trace'
+        diaryclass += ' active' if params['controller'] == 'diary_entry'
         %>
         <li><%= link_to t('layouts.view'), {:controller => 'site', :action => 'index'}, {:id => 'viewanchor', :title => t('layouts.view_tooltip'), :class => viewclass} %></li>
         <li><%= link_to t('layouts.edit') + '&nbsp;&#x25be;', {:controller => 'site', :action => 'edit'}, {:id => 'editanchor', :title => t('javascripts.site.edit_tooltip'), :class => editclass} %></li>
@@ -56,7 +56,7 @@
     <div id="editmenu">
       <ul>
         <% Editors::ALL_EDITORS.each do |editor| %>
-          <li><%= link_to t('layouts.edit_with', :editor => t("editor.#{editor}.description")), {:controller => 'site', :action => 'edit', :editor => editor}, {:id => editor + 'anchor'} %></li>
+          <li><%= link_to t('layouts.edit_with', :editor => t("editor.#{editor}.description")), {:controller => 'site', :action => 'edit', :editor => editor}, {:id => editor + 'anchor', :class => "geolink llz object"} %></li>
         <% end %>
       </ul>
     </div>
diff --git a/app/views/site/index.html.erb b/app/views/site/index.html.erb
index 1f1313c53..e417c2695 100644
--- a/app/views/site/index.html.erb
+++ b/app/views/site/index.html.erb
@@ -18,7 +18,7 @@
 
 <div id="map">
   <div id="permalink">
-    <a href="/" id="permalinkanchor"><%= t 'site.index.permalink' %></a><br/>
+    <a href="/" id="permalinkanchor" class="geolink llz layers object"><%= t 'site.index.permalink' %></a><br/>
     <a href="/" id="shortlinkanchor"><%= t 'site.index.shortlink' %></a>
   </div>
 </div>
diff --git a/public/javascripts/site.js b/public/javascripts/site.js
index 840617e17..813b3ae92 100644
--- a/public/javascripts/site.js
+++ b/public/javascripts/site.js
@@ -9,130 +9,53 @@ function updatelinks(lon,lat,zoom,layers,minlon,minlat,maxlon,maxlat,objtype,obj
   lat = Math.round(lat * decimals) / decimals;
   lon = Math.round(lon * decimals) / decimals;
 
-  node = $("permalinkanchor");
-  if (node) {
-    var args = getArgs(node.href);
-    args["lat"] = lat;
-    args["lon"] = lon;
-    args["zoom"] = zoom;
-    if (layers) {
-      args["layers"] = layers;
-    }
-    if (objtype && objid) {
-      args[objtype] = objid;
-    }
-    node.href = setArgs(node.href, args);
-  }
-
-  node = $("viewanchor");
-  if (node) {
-    var args = getArgs(node.href);
-    args["lat"] = lat;
-    args["lon"] = lon;
-    args["zoom"] = zoom;
-    if (layers) {
-      args["layers"] = layers;
-    }
-    node.href = setArgs(node.href, args);
+  if (minlon) {
+    minlon = Math.round(minlon * decimals) / decimals;
+    minlat = Math.round(minlat * decimals) / decimals;
+    maxlon = Math.round(maxlon * decimals) / decimals;
+    maxlat = Math.round(maxlat * decimals) / decimals;
   }
 
-  node = $("exportanchor");
-  if (node) {
-    var args = getArgs(node.href);
-    args["lat"] = lat;
-    args["lon"] = lon;
-    args["zoom"] = zoom;
-    if (layers) {
-      args["layers"] = layers;
-    }
-    node.href = setArgs(node.href, args);
-  }
+  $$(".geolink").each(function (link) {
+    var args = getArgs(link.href);
 
-  node = $("editanchor");
-  if (node) {
-    if (zoom >= 13) {
-      var args = new Object();
+    if (link.hasClassName("llz")) {
       args.lat = lat;
       args.lon = lon;
       args.zoom = zoom;
-      if (objtype && objid) {
-        args[objtype] = objid;
-      }
-      node.href = setArgs("/edit", args);
-      node.title = i18n("javascripts.site.edit_tooltip");
-      node.removeClassName("disabled");
-    } else {
-      node.href = 'javascript:alert(i18n("javascripts.site.edit_zoom_alert"));';
-      node.title = i18n("javascripts.site.edit_disabled_tooltip");
-      node.addClassName("disabled");
+    } else if (minlon && link.hasClassName("bbox")) {
+      args.bbox = minlon + "," + minlat + "," + maxlon + "," + maxlat;
     }
-  }
 
-  node = $("potlatchanchor");
-  if (node) {
-    var args = new Object();
-    args.editor = "potlatch";
-    args.lat = lat;
-    args.lon = lon;
-    args.zoom = zoom;
-    if (objtype && objid) {
-      args[objtype] = objid;
+    if (layers && link.hasClassName("layers")) {
+      args.layers = layers;
     }
-    node.href = setArgs("/edit", args);
-  }
 
-  node = $("potlatch2anchor");
-  if (node) {
-    var args = new Object();
-    args.editor = "potlatch2";
-    args.lat = lat;
-    args.lon = lon;
-    args.zoom = zoom;
-    if (objtype && objid) {
+    if (objtype && link.hasClassName("object")) {
       args[objtype] = objid;
     }
-    node.href = setArgs("/edit", args);
-  }
 
-  node = $("josmanchor");
-  if (node) {
-    var args = new Object();
-    args.editor = "josm";
-    args.lat = lat;
-    args.lon = lon;
-    args.zoom = zoom;
-    if (objtype && objid) {
-      args[objtype] = objid;
+    if (link.hasClassName("minzoom[0-9]+")) {
+      $w(link.className).each(function (classname) {
+        if (match = classname.match(/^minzoom([0-9]+)$/)) {
+          var minzoom = match[1];
+          var name = link.id.replace(/anchor$/, "");
+
+          if (zoom >= minzoom) {
+            link.onclick = null;
+            link.title = i18n("javascripts.site." + name + "_tooltip");
+            link.removeClassName("disabled");
+          } else {
+            link.onclick = function () { alert(i18n("javascripts.site." + name + "_zoom_alert")); return false; };
+            link.title = i18n("javascripts.site." + name + "_disabled_tooltip");
+            link.addClassName("disabled");
+          }
+        }
+      });
     }
-    node.href = setArgs("/edit", args);
-  }
-
-  node = $("historyanchor");
-  if (node) {
-    if (zoom >= 11) {
-      var args = new Object();
-      //set bbox param from 'extents' object
-      if (typeof minlon == "number" &&
-          typeof minlat == "number" &&
-          typeof maxlon == "number" &&
-          typeof maxlat == "number") {
-
-        minlon = Math.round(minlon * decimals) / decimals;
-        minlat = Math.round(minlat * decimals) / decimals;
-        maxlon = Math.round(maxlon * decimals) / decimals;
-        maxlat = Math.round(maxlat * decimals) / decimals;
-        args.bbox = minlon + "," + minlat + "," + maxlon + "," + maxlat;
-      }
 
-      node.href = setArgs("/history", args);
-      node.title = i18n("javascripts.site.history_tooltip");
-      node.removeClassName("disabled");
-    } else {
-      node.href = 'javascript:alert(i18n("javascripts.site.history_zoom_alert"));';
-      node.title = i18n("javascripts.site.history_disabled_tooltip");
-      node.addClassName("disabled");
-    }
-  }
+    link.href = setArgs(link.href, args);
+  });
 
   node = $("shortlinkanchor");
   if (node) {
-- 
2.43.2