pushState based navigation between map-based layouts

[rails.git] / app / assets / javascripts / index / export.js

diff --git a/app/assets/javascripts/index/export.js b/app/assets/javascripts/index/export.js
index 8696338ab403fade93cbf53eb34100bf792f6d46..70684eca9dac0dd70b26f8ebb57c636aa023f9a0 100644 (file)
--- a/app/assets/javascripts/index/export.js
+++ b/app/assets/javascripts/index/export.js
@@ -1,328 +1,76 @@
-$(document).ready(function () {
-  $("#exportanchor").click(function (e) {
-    $.ajax({ url: $(this).data('url'), success: function (sidebarHtml) {
-      startExport(sidebarHtml);
-    }});
-    e.preventDefault();
-  });
-
-  if (window.location.pathname == "/export") {
-    $("#exportanchor").click();
+OSM.Export = function(map) {
+  var page = {};
+
+  var locationFilter = new L.LocationFilter({
+    enableButton: false,
+    adjustButton: false
+  }).on("change", update);
+
+  function getBounds() {
+    return L.latLngBounds(
+      L.latLng($("#minlat").val(), $("#minlon").val()),
+      L.latLng($("#maxlat").val(), $("#maxlon").val()));

   }
 
   }
 

-  function startExport(sidebarHtml) {
-    var vectors,
-        box,
-        transform,
-        markerLayer,
-        markerControl;
-
-    vectors = new OpenLayers.Layer.Vector("Vector Layer", {
-      displayInLayerSwitcher: false
-    });
-    map.addLayer(vectors);
-
-    box = new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.RegularPolygon, {
-      handlerOptions: {
-        sides: 4,
-        snapAngle: 90,
-        irregular: true,
-        persist: true
-      }
-    });
-    box.handler.callbacks.done = endDrag;
-    map.addControl(box);
-
-    transform = new OpenLayers.Control.TransformFeature(vectors, {
-      rotate: false,
-      irregular: true
-    });
-    transform.events.register("transformcomplete", transform, transformComplete);
-    map.addControl(transform);
-
-    map.events.register("moveend", map, mapMoved);
-    map.events.register("changebaselayer", map, htmlUrlChanged);
-
-    $("#sidebar_title").html(I18n.t('export.start_rjs.export'));
-    $("#sidebar_content").html(sidebarHtml);
-
-    $("#maxlat,#minlon,#maxlon,#minlat").change(boundsChanged);
-
-    $("#drag_box").click(startDrag);
-
-    $("#add_marker").click(startMarker);
-
-    $("#format_osm,#format_mapnik,#format_html").click(formatChanged);
-
-    $("#mapnik_scale").change(mapnikSizeChanged);
-
-    openSidebar();
-
-    if (map.baseLayer.name == "Mapnik") {
-      $("#format_mapnik").prop("checked", true);
-    }
-
-    formatChanged();
-    setBounds(map.getExtent());
-
-    $("body").removeClass("site-index").addClass("site-export");
-
-    $("#sidebar").one("closed", function () {
-      $("body").removeClass("site-export").addClass("site-index");
-
-      clearBox();
-      clearMarker();
-      map.events.unregister("moveend", map, mapMoved);
-      map.events.unregister("changebaselayer", map, htmlUrlChanged);
-      map.removeLayer(vectors);
-    });
-
-    function getMercatorBounds() {
-      var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(),
-                                         $("#maxlon").val(), $("#maxlat").val());
-
-      return proj(bounds);
-    }
-
-    function boundsChanged() {
-      var bounds = getMercatorBounds();
-
-      map.events.unregister("moveend", map, mapMoved);
-      map.zoomToExtent(bounds);
-
-      clearBox();
-      drawBox(bounds);
-
-      validateControls();
-      mapnikSizeChanged();
-    }
-
-    function startDrag() {
-      $("#drag_box").html(I18n.t('export.start_rjs.drag_a_box'));
-
-      clearBox();
-      box.activate();
-    };
-
-    function endDrag(bbox) {
-      var bounds = bbox.getBounds();
-
-      map.events.unregister("moveend", map, mapMoved);
-      setBounds(bounds);
-      drawBox(bounds);
-      box.deactivate();
-      validateControls();
-
-      $("#drag_box").html(I18n.t('export.start_rjs.manually_select'));
-    }
-
-    function transformComplete(event) {
-      setBounds(event.feature.geometry.bounds);
-      validateControls();
-    }
-
-    function startMarker() {
-      $("#add_marker").html(I18n.t('export.start_rjs.click_add_marker'));
-
-      if (!markerLayer) {
-        markerLayer = new OpenLayers.Layer.Vector("",{
-          displayInLayerSwitcher: false,
-          style: {
-            externalGraphic: OpenLayers.Util.getImageLocation("marker.png"),
-            graphicXOffset: -10.5,
-            graphicYOffset: -25,
-            graphicWidth: 21,
-            graphicHeight: 25
-          }
-        });
-        map.addLayer(markerLayer);
-
-        markerControl = new OpenLayers.Control.DrawFeature(markerLayer, OpenLayers.Handler.Point);
-        map.addControl(markerControl);
-
-        markerLayer.events.on({ "featureadded": endMarker });
-      }
-
-      markerLayer.destroyFeatures();
-      markerControl.activate();
-
-      return false;
-    }
-
-    function endMarker(event) {
-      markerControl.deactivate();
-
-      $("#add_marker").html(I18n.t('export.start_rjs.change_marker'));
-      $("#marker_inputs").show();
-
-      var geom = unproj(event.feature.geometry);
-
-      $("#marker_lon").val(geom.x.toFixed(5));
-      $("#marker_lat").val(geom.y.toFixed(5));
-
-      htmlUrlChanged();
-    }
-
-    function clearMarker() {
-      $("#marker_lon,#marker_lat").val("");
-      $("#marker_inputs").hide();
-      $("#add_marker").html(I18n.t('export.start_rjs.add_marker'));
-
-      if (markerLayer) {
-        markerControl.destroy();
-        markerLayer.destroy();
-        markerLayer = null;
-        markerControl = null;
-      }
-    }
-
-    function mapMoved() {
-      setBounds(map.getExtent());
-      validateControls();
-    }
-
-    function setBounds(bounds) {
-      var toPrecision = zoomPrecision(map.getZoom());
-
-      bounds = unproj(bounds);
-
-      $("#minlon").val(toPrecision(bounds.left));
-      $("#minlat").val(toPrecision(bounds.bottom));
-      $("#maxlon").val(toPrecision(bounds.right));
-      $("#maxlat").val(toPrecision(bounds.top));
-
-      mapnikSizeChanged();
-      htmlUrlChanged();
-    }
-
-    function clearBox() {
-      transform.deactivate();
-      vectors.destroyFeatures();
-    }
-
-    function drawBox(bounds) {
-      var feature = new OpenLayers.Feature.Vector(bounds.toGeometry());
-
-      vectors.addFeatures(feature);
-      transform.setFeature(feature);
-    }
-
-    function validateControls() {
-      var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val());
-
-      if (bounds.getWidth() * bounds.getHeight() > OSM.MAX_REQUEST_AREA) {
-        $("#export_osm_too_large").show();
-      } else {
-        $("#export_osm_too_large").hide();
-      }
-
-      var max_scale = maxMapnikScale();
-      var disabled = true;
-
-      if ($("#format_osm").prop("checked")) {
-        disabled = bounds.getWidth() * bounds.getHeight() > OSM.MAX_REQUEST_AREA;
-      } else if ($("#format_mapnik").prop("checked")) {
-        disabled = $("#mapnik_scale").val() < max_scale;
-      }
-
-      $("#export_commit").prop("disabled", disabled);
-      $("#mapnik_max_scale").html(roundScale(max_scale));
-    }
-
-    function htmlUrlChanged() {
-      var bounds = new OpenLayers.Bounds($("#minlon").val(), $("#minlat").val(), $("#maxlon").val(), $("#maxlat").val());
-      var layerName = map.baseLayer.keyid;
-      var url = "http://" + OSM.SERVER_URL + "/export/embed.html?bbox=" + bounds.toBBOX() + "&amp;layer=" + layerName;
-      var markerUrl = "";
+  function boundsChanged() {
+    var bounds = getBounds();

 
 

-      if ($("#marker_lat").val() && $("#marker_lon").val()) {
-        markerUrl = "&amp;mlat=" + $("#marker_lat").val() + "&amp;mlon=" + $("#marker_lon").val();
-        url += "&amp;marker=" + $("#marker_lat").val() + "," + $("#marker_lon").val();
-      }
+    map.fitBounds(bounds);
+    locationFilter.setBounds(bounds);

 
 

-      var html = '<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="'+url+'" style="border: 1px solid black"></iframe>';
-
-      // Create "larger map" link
-      var center = bounds.getCenterLonLat();
-
-      var zoom = map.getZoomForExtent(proj(bounds));
-
-      var layers = getMapLayers();
-
-      var text = I18n.t('export.start_rjs.view_larger_map');
-      var escaped = [];
-
-      for (var i = 0; i < text.length; ++i) {
-        var c = text.charCodeAt(i);
-        escaped.push(c < 127 ? text.charAt(i) : "&#" + c + ";");
-      }
-
-      html += '<br /><small><a href="http://' + OSM.SERVER_URL + '/?lat='+center.lat+'&amp;lon='+center.lon+'&amp;zoom='+zoom+'&amp;layers='+layers+markerUrl+'">'+escaped.join("")+'</a></small>';
-
-      $("#export_html_text").val(html);
+    enableFilter();
+    validateControls();
+  }

 
 

-      if ($("#format_html").prop("checked")) {
-        $("#export_html_text").prop("selected", true);
-      }
+  function enableFilter() {
+    if (!locationFilter.getBounds().isValid()) {
+      locationFilter.setBounds(map.getBounds().pad(-0.2));

     }
 
     }
 

-    function formatChanged() {
-      $("#export_commit").show();
-
-      if ($("#format_osm").prop("checked")) {
-        $("#export_osm").show();
-      } else {
-        $("#export_osm").hide();
-      }
-
-      if ($("#format_mapnik").prop("checked")) {
-        $("#mapnik_scale").val(roundScale(map.getScale()));
-        $("#export_mapnik").show();
-
-        mapnikSizeChanged();
-      } else {
-        $("#export_mapnik").hide();
-      }
-
-      if ($("#format_html").prop("checked")) {
-        $("#export_html").show();
-        $("#export_commit").hide();
-        $("#export_html_text").prop("selected", true);
-      } else {
-        $("#export_html").hide();
-
-        clearMarker();
-      }
+    $("#drag_box").hide();
+    locationFilter.enable();
+  }

 
 

-      validateControls();
-    }
+  function update() {
+    setBounds(locationFilter.isEnabled() ? locationFilter.getBounds() : map.getBounds());
+    validateControls();
+  }

 
 

-    function maxMapnikScale() {
-      var bounds = getMercatorBounds();
+  function setBounds(bounds) {
+    var precision = zoomPrecision(map.getZoom());
+    $("#minlon").val(bounds.getWest().toFixed(precision));
+    $("#minlat").val(bounds.getSouth().toFixed(precision));
+    $("#maxlon").val(bounds.getEast().toFixed(precision));
+    $("#maxlat").val(bounds.getNorth().toFixed(precision));
+  }

 
 

-      return Math.floor(Math.sqrt(bounds.getWidth() * bounds.getHeight() / 0.3136));
-    }
+  function validateControls() {
+    $("#export_osm_too_large").toggle(getBounds().getSize() > OSM.MAX_REQUEST_AREA);
+  }

 
 

-    function mapnikImageSize(scale) {
-      var bounds = getMercatorBounds();
+  page.pushstate = page.popstate = function(path) {
+    $("#export_tab").addClass("current");
+    $('#sidebar_content').load(path, page.load);
+  };

 
 

-      return new OpenLayers.Size(Math.round(bounds.getWidth() / scale / 0.00028),
-                                 Math.round(bounds.getHeight() / scale / 0.00028));
-    }
+  page.load = function() {
+    map
+      .addLayer(locationFilter)
+      .on("moveend", update);

 
 

-    function roundScale(scale) {
-      var precision = 5 * Math.pow(10, Math.floor(Math.LOG10E * Math.log(scale)) - 2);
+    $("#maxlat, #minlon, #maxlon, #minlat").change(boundsChanged);
+    $("#drag_box").click(enableFilter);

 
 

-      return precision * Math.ceil(scale / precision);
-    }
+    update();
+  };

 
 

-    function mapnikSizeChanged() {
-      var size = mapnikImageSize($("#mapnik_scale").val());
+  page.unload = function() {
+    map
+      .removeLayer(locationFilter)
+      .off("moveend", update);

 
 

-      $("#mapnik_image_width").html(size.w);
-      $("#mapnik_image_height").html(size.h);
+    $("#export_tab").removeClass("current");
+  };

 
 

-      validateControls();
-    }
-  }
-});
+  return page;
+};