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 47830f8beea33111284db05b264eebdaeb694650..70684eca9dac0dd70b26f8ebb57c636aa023f9a0 100644 (file)
--- a/app/assets/javascripts/index/export.js
+++ b/app/assets/javascripts/index/export.js
@@ -1,284 +1,76 @@
-function initializeExport(map) {
-  $("#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 marker;
-
-    var locationFilter = new L.LocationFilter({
-      enableButton: false,
-      adjustButton: false
-    }).addTo(map);
-
-    locationFilter.on("change", filterChanged);
-
-    map.on("moveend", mapMoved);
-    map.on("baselayerchange", htmlUrlChanged);
-
-    $("#sidebar_title").html(I18n.t('export.start_rjs.export'));
-    $("#sidebar_content").html(sidebarHtml);
-
-    $("#maxlat,#minlon,#maxlon,#minlat").change(boundsChanged);
-
-    $("#drag_box").click(enableFilter);
-
-    $("#add_marker").click(startMarker);
-
-    $("#format_osm,#format_mapnik,#format_html").click(formatChanged);
-
-    $("#mapnik_scale").change(mapnikSizeChanged);
-
-    openSidebar();
-
-    if (map.getMapBaseLayerId() == "mapnik") {
-      $("#format_mapnik").prop("checked", true);
-    }
-
-    setBounds(map.getBounds());
-    formatChanged();
-
-    $("body").removeClass("site-index").addClass("site-export");
-
-    $("#sidebar").one("closed", function () {
-      $("body").removeClass("site-export").addClass("site-index");
-
-      map.removeLayer(locationFilter);
-      clearMarker();
-
-      map.off("moveend", mapMoved);
-      map.off("baselayerchange", htmlUrlChanged);
-      locationFilter.off("change", filterChanged);
-    });
-
-    function getBounds() {
-      return L.latLngBounds(L.latLng($("#minlat").val(), $("#minlon").val()),
-                            L.latLng($("#maxlat").val(), $("#maxlon").val()));
-    }
-
-    function getScale() {
-      var bounds = map.getBounds(),
-        centerLat = bounds.getCenter().lat,
-        halfWorldMeters = 6378137 * Math.PI * Math.cos(centerLat * Math.PI / 180),
-        meters = halfWorldMeters * (bounds.getEast() - bounds.getWest()) / 180,
-        pixelsPerMeter = map.getSize().x / meters,
-        metersPerPixel = 1 / (92 * 39.3701);
-      return Math.round(1 / (pixelsPerMeter * metersPerPixel));
-    }
-
-    function getMercatorBounds() {
-      var bounds = getBounds();
-      return L.bounds(L.CRS.EPSG3857.project(bounds.getSouthWest()),
-                      L.CRS.EPSG3857.project(bounds.getNorthEast()));
-    }
-
-    function boundsChanged() {
-      var bounds = getBounds();
-
-      map.fitBounds(bounds);
-      locationFilter.setBounds(bounds);
-
-      enableFilter();
-      validateControls();
-      mapnikSizeChanged();
-    }
-
-    function enableFilter() {
-      if (!locationFilter.getBounds().isValid()) {
-        locationFilter.setBounds(map.getBounds().pad(-0.2));
-      }
-
-      $("#drag_box").hide();
-      locationFilter.enable();
-    }
-
-    function filterChanged() {
-      setBounds(locationFilter.getBounds());
-      validateControls();
-    }
-
-    function startMarker() {
-      $("#add_marker").html(I18n.t('export.start_rjs.click_add_marker'));
-
-      map.on("click", endMarker);
-
-      return false;
-    }
-
-    function endMarker(event) {
-      map.off("click", endMarker);
+  function boundsChanged() {
+    var bounds = getBounds();

 
 

-      $("#add_marker").html(I18n.t('export.start_rjs.change_marker'));
-      $("#marker_inputs").show();
+    map.fitBounds(bounds);
+    locationFilter.setBounds(bounds);

 
 

-      var latlng = event.latlng;
-
-      if (marker) {
-        map.removeLayer(marker);
-      }
-
-      marker = L.marker(latlng).addTo(map);
-
-      $("#marker_lon").val(latlng.lng.toFixed(5));
-      $("#marker_lat").val(latlng.lat.toFixed(5));
-
-      htmlUrlChanged();
-    }
-
-    function clearMarker() {
-      $("#marker_lon,#marker_lat").val("");
-      $("#marker_inputs").hide();
-      $("#add_marker").html(I18n.t('export.start_rjs.add_marker'));
-
-      if (marker) {
-        map.removeLayer(marker);
-      }
-    }
-
-    function mapMoved() {
-      if (!locationFilter.isEnabled()) {
-        setBounds(map.getBounds());
-        validateControls();
-      }
-    }
-
-    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));
-
-      mapnikSizeChanged();
-      htmlUrlChanged();
-    }
-
-    function validateControls() {
-      var bounds = getBounds();
-
-      var tooLarge = bounds.getSize() > OSM.MAX_REQUEST_AREA;
-      if (tooLarge) {
-        $("#export_osm_too_large").show();
-      } else {
-        $("#export_osm_too_large").hide();
-      }
-
-      var max_scale = maxMapnikScale();
-      var disabled = true;
-
-      if ($("#format_osm").prop("checked")) {
-        disabled = tooLarge;
-      } else if ($("#format_mapnik").prop("checked")) {
-        disabled = $("#mapnik_scale").val() < max_scale;
-      }
-
-      $("#export_commit").prop("disabled", disabled);
-      $("#mapnik_max_scale").html(roundScale(max_scale));
-    }
-
-    function htmlUrlChanged() {
-      var bounds = getBounds();
-      var layerName = map.getMapBaseLayerId();
-
-      var url = "http://" + OSM.SERVER_URL + "/export/embed.html?bbox=" + bounds.toBBoxString() + "&amp;layer=" + layerName;
-      var markerUrl = "";
-
-      if ($("#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();
-      }
-
-      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.getCenter();
-
-      var zoom = map.getBoundsZoom(bounds);
-
-      var layers = map.getLayersCode();
-
-      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.lng+'&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(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 size = getMercatorBounds().getSize();
+  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(size.x * size.y / 0.3136));
-    }
+  function validateControls() {
+    $("#export_osm_too_large").toggle(getBounds().getSize() > OSM.MAX_REQUEST_AREA);
+  }

 
 

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

 
 

-      return {w: Math.round(size.x / scale / 0.00028),
-              h: Math.round(size.y / 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;
+};