Use {{count}} instead of {{distance}} for kilometer count as {{count}} is a magical...

[rails.git] / public / javascripts / site.js

diff --git a/public/javascripts/site.js b/public/javascripts/site.js
index 781940fa6494a84a8c578b034a6b18b881ea61d6..e0c18a27b5005fee572114de23388d360ef31b0e 100644 (file)
--- a/public/javascripts/site.js
+++ b/public/javascripts/site.js
@@ -1,38 +1,89 @@
-function updatelinks(lon,lat,zoom) {
-  var links = new Object();
-  links['viewanchor'] = '/index.html';
-  //links['editanchor'] = 'edit.html';
-  links['uploadanchor'] = '/traces';
-  links['loginanchor'] = '/login.html';
-  links['logoutanchor'] = '/logout.html';
-  links['registeranchor'] = '/create-account.html';
-
+/*
+ * Called as the user scrolls/zooms around to aniplate hrefs of the
+ * view tab and various other links
+ */
+function updatelinks(lon,lat,zoom,layers,minlon,minlat,maxlon,maxlat) {
+  var decimals = Math.pow(10, Math.floor(zoom/3));
   var node;
-  var anchor;
-  for (anchor in links) {
-    node = document.getElementById(anchor);
-    if (! node) { continue; }
+
+  lat = Math.round(lat * decimals) / decimals;
+  lon = Math.round(lon * decimals) / decimals;
+
+  node = document.getElementById("permalinkanchor");
+  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);
+  }
+
+  node = document.getElementById("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);
+  }
+
+  node = document.getElementById("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);
   }
 
   node = document.getElementById("editanchor");
   if (node) {
-    if (zoom >= 11) {
+    if (zoom >= 13) {
       var args = new Object();
       args.lat = lat;
       args.lon = lon;
       args.zoom = zoom;
-      node.href = setArgs("/edit.html", args);
+      node.href = setArgs("/edit", args);
       node.style.fontStyle = 'normal';
     } else {
       node.href = 'javascript:alert("zoom in to edit map");';
       node.style.fontStyle = 'italic';
     }
   }
+  
+  node = document.getElementById("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.style.fontStyle = 'normal';
+    } else {
+      node.href = 'javascript:alert("zoom in to see editing history");';
+      node.style.fontStyle = 'italic';
+    }
+  }
 }
 
 function getArgs(url) {
@@ -55,6 +106,9 @@ function getArgs(url) {
   return args;
 }
 
+/*
+ * Called to set the arguments on a URL from the given hash.
+ */
 function setArgs(url, args) {
    var queryitems = new Array();
 
@@ -69,3 +123,38 @@ function setArgs(url, args) {
 
    return url.replace(/\?.*$/, "") + "?" + queryitems.join("&");
 }
+
+/*
+ * Called to get the arguments from a URL as a hash.
+ */
+function getStyle(el, property) {
+  var style;
+
+  if (el.currentStyle) {
+    style = el.currentStyle[property];
+  } else if( window.getComputedStyle ) {
+    style = document.defaultView.getComputedStyle(el,null).getPropertyValue(property);
+  } else {
+    style = el.style[property];
+  }
+
+  return style;
+}
+
+/*
+ * Called to interpolate JavaScript variables in strings using a
+ * similar syntax to rails I18n string interpolation - the only
+ * difference is that [[foo]] is the placeholder syntax instead
+ * of {{foo}} which allows the same string to be processed by both
+ * rails and then later by javascript.
+ */
+function i18n(string, keys) {
+  for (var key in keys) {
+    var re_key = '\\[\\[' + key + '\\]\\]';
+    var re = new RegExp(re_key, "g");
+      
+    string = string.replace(re, keys[key]);
+  }
+   
+  return string;
+}