js/admin.js

   1 /* Copyright (c) 2009 Arnaud Renevier, Inc, published under the modified BSD
   2  * license. */
   3
   4 // drag feature with tolerance
   5 OpenLayers.Control.SypDragFeature = OpenLayers.Class (OpenLayers.Control.DragFeature, {
   6     startPixel: null,
   7     dragStart: null,
   8     pixelTolerance : 0,
   9     timeTolerance: 300,
  10
  11     downFeature: function(pixel) {
  12         OpenLayers.Control.DragFeature.prototype.downFeature.apply(this, arguments);
  13         this.dragStart = (new Date()).getTime();
  14         this.startPixel = pixel;
  15     },
  16
  17     doneDragging: function(pixel) {
  18         OpenLayers.Control.DragFeature.prototype.doneDragging.apply(this, arguments);
  19         // Check tolerance.
  20         var passesTimeTolerance =
  21                     (new Date()).getTime() > this.dragStart + this.timeTolerance;
  22
  23         var xDiff = this.startPixel.x - pixel.x;
  24         var yDiff = this.startPixel.y - pixel.y;
  25
  26         var passesPixelTolerance =
  27         Math.sqrt(Math.pow(xDiff,2) + Math.pow(yDiff,2)) > this.pixelTolerance;
  28
  29         if(passesTimeTolerance && passesPixelTolerance){
  30             this.onComplete(this.feature, pixel);
  31         } else {
  32             var feature = this.feature;
  33             var res = this.map.getResolution();
  34             this.feature.geometry.move(res * (this.startPixel.x - this.lastPixel.x),
  35                     res * (this.lastPixel.y - this.startPixel.y));
  36             this.layer.drawFeature(this.feature);
  37         }
  38         this.layer.drawFeature(this.feature, "select");
  39     },
  40
  41     moveFeature: function(pixel) {
  42         OpenLayers.Control.DragFeature.prototype.moveFeature.apply(this, arguments);
  43         this.layer.drawFeature(this.feature, "temporary");
  44     },
  45
  46     overFeature: function (feature) {
  47         // can only drag and drop currently selected feature
  48         if (feature != Admin.currentFeature) {
  49             return;
  50         }
  51         OpenLayers.Control.DragFeature.prototype.overFeature.apply(this, arguments);
  52     },
  53
  54     CLASS_NAME: "OpenLayers.Control.SypDragFeature"
  55 });
  56
  57 var Admin = {
  58     Settings: {
  59         MARKER_ICON: "openlayers/img/marker-blue.png",
  60         MARKER_ICON_HEIGHT: 25,
  61         MARKER_SELECT_ICON: "openlayers/img/marker-green.png",
  62         MARKER_SELECT_ICON_HEIGHT: 25,
  63         MARKER_TEMPORARY_ICON: "openlayers/img/marker-gold.png",
  64         MARKER_TEMPORARY_ICON_HEIGHT: 25
  65     },
  66
  67     map: null,
  68     baseLayer: null,
  69     dataLayer: null,
  70     selFeatureControl: null,
  71     moveFeatureControl: null,
  72     addFeatureControl: null,
  73
  74     currentFeature: null,
  75     currentFeatureLocation: null,
  76
  77     init: function () {
  78         this.map = new OpenLayers.Map ("map", {
  79                 controls:[
  80                     new OpenLayers.Control.Navigation (),
  81                     new OpenLayers.Control.PanZoom ()
  82                 ],
  83                 projection: new OpenLayers.Projection("EPSG:900913"),
  84                 displayProjection: new OpenLayers.Projection("EPSG:4326")
  85          });
  86
  87          this.baseLayer = this.createBaseLayer ();
  88          this.dataLayer = this.createDataLayer ();
  89          this.map.addLayers([this.baseLayer, this.dataLayer]);
  90
  91          // controls
  92          this.selFeatureControl = this.createSelectFeatureControl();
  93          this.map.addControl(this.selFeatureControl);
  94          this.moveFeatureControl = this.createMoveFeatureControl();
  95          this.map.addControl(this.moveFeatureControl);
  96          this.addFeatureControl = this.createNewfeatureControl();
  97          this.map.addControl(this.addFeatureControl);
  98
  99          // position
 100          var centerBounds = new OpenLayers.Bounds();
 101
 102          var mapProj = this.map.getProjectionObject();
 103          var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
 104
 105          var bottomLeft = new OpenLayers.LonLat(sypOrig[0],sypOrig[1]);
 106          bottomLeft = bottomLeft.transform(sypOrigProj, mapProj);
 107          var topRight = new OpenLayers.LonLat(sypOrig[2],sypOrig[3])
 108          topRight = topRight.transform(sypOrigProj, mapProj);
 109
 110          centerBounds.extend(bottomLeft);
 111          centerBounds.extend(topRight);
 112
 113          // at that moment, ie does not know size of the map, we need to update
 114          // manually
 115          this.map.updateSize();
 116          this.map.zoomToExtent(centerBounds);
 117
 118          this.reset();
 119     },
 120
 121     reset: function() {
 122         this.addFeatureControl.deactivate();
 123         this.moveFeatureControl.deactivate();
 124         this.selFeatureControl.activate();
 125         this.checkForFeatures();
 126         $("#newfeature_button").show().val(SypStrings.AddItem);
 127         $("#newfeature_button").unbind("click").click(function () {
 128             Admin.addNewFeature();
 129         });
 130     },
 131
 132     createBaseLayer: function () {
 133         return new OpenLayers.Layer.OSM("OSM");
 134     },
 135
 136     createDataLayer: function () {
 137         var styleMap = new OpenLayers.StyleMap (
 138                         {"default": {
 139                              externalGraphic: this.Settings.MARKER_ICON,
 140                              graphicHeight: this.Settings.MARKER_ICON_HEIGHT
 141                                                   || 32
 142                                 },
 143                          "temporary": {
 144                              externalGraphic: this.Settings.MARKER_TEMPORARY_ICON,
 145                              graphicHeight: this.Settings.MARKER_TEMPORARY_ICON_HEIGHT
 146                                                   || 32
 147                          },
 148                          "select": {
 149                              externalGraphic: this.Settings.MARKER_SELECT_ICON,
 150                              graphicHeight: this.Settings.MARKER_SELECT_ICON_HEIGHT
 151                                                   || 32
 152                     }});
 153
 154         var layer = new OpenLayers.Layer.GML("KML", "items.php",
 155            {
 156             styleMap: styleMap,
 157             format: OpenLayers.Format.KML,
 158             projection: this.map.displayProjection,
 159             eventListeners: { scope: this,
 160                 loadend: this.checkForFeatures
 161             }
 162        });
 163
 164         return layer;
 165     },
 166
 167     createMoveFeatureControl: function () {
 168         var control = new OpenLayers.Control.SypDragFeature(
 169                 this.dataLayer, {
 170                          });
 171         return control;
 172     },
 173
 174     createSelectFeatureControl: function () {
 175         var control = new OpenLayers.Control.SelectFeature(
 176                 this.dataLayer, {
 177                         onSelect: OpenLayers.Function.bind(this.onFeatureSelect, this)
 178                          });
 179         return control;
 180     },
 181
 182     createNewfeatureControl: function () {
 183         var control = new OpenLayers.Control ();
 184         var handler = new OpenLayers.Handler.Click(control, {
 185                 'click': OpenLayers.Function.bind(FeatureMgr.add, FeatureMgr)
 186             });
 187         control.handler = handler;
 188         return control;
 189     },
 190
 191     onFeatureSelect: function (feature) {
 192         this.showEditor(feature);
 193         FeatureMgr.reset();
 194         this.selFeatureControl.deactivate();
 195         this.moveFeatureControl.activate();
 196     },
 197
 198     closeEditor: function() {
 199         if (this.currentFeature && this.currentFeature.layer) {
 200             this.selFeatureControl.unselect(this.currentFeature);
 201         }
 202         this.currentFeature = null;
 203         this.currentFeatureLocation = null;
 204         $("#img").removeAttr('src');
 205         $("#img").parent().html($("#img").parent().html());
 206         $("#img").parent().show();
 207         $("#title, #description").val("");
 208         $("#editor").hide();
 209         // do it once before hidding and once after hidding to work in all cases
 210         $("#title, #description").val("");
 211         $("#image_file").parent().html($("#image_file").parent().html());
 212         $(document).unbind("keydown");
 213         this.checkForFeatures();
 214         this.reset();
 215     },
 216
 217     showEditor: function (feature) {
 218         $("#newfeature_button").hide();
 219         if (feature.fid) {
 220             $("#delete").show();
 221         } else {
 222             $("#delete").hide();
 223         }
 224         $(document).unbind("keydown").keydown(function(e) {
 225             if (e.keyCode == 27) {
 226                 Admin.cancelCurrentFeature()
 227                 e.preventDefault();
 228             }
 229         });
 230         this.currentFeature = feature;
 231         this.currentFeatureLocation = new OpenLayers.Pixel(feature.geometry.x, feature.geometry.y);
 232         $("#editor").show();
 233         $("#instructions").text(SypStrings.DragDropHowto);
 234         $("#title").val(feature.attributes.name);
 235         var fullDesc = $(feature.attributes.description).parent();
 236         $("#description").val(fullDesc.find('p').text());
 237         var src = fullDesc.find('img').attr('src');
 238         if (src) {
 239             $("#img").parent().show();
 240             $("#img").attr('src', src);
 241             $("#image_file").parent().hide();
 242             $("#image_delete").show();
 243         } else {
 244             $("#img").parent().hide();
 245             $("#image_file").parent().show();
 246             $("#image_delete").hide();
 247         }
 248         $("#title").select().focus();
 249     },
 250
 251     checkForFeatures: function () {
 252         if (this.dataLayer.features.length != 0) {
 253             $("#instructions").text(SypStrings.SelectHowto);
 254         }
 255     },
 256
 257     addNewFeature: function () {
 258         function cancel() {
 259             $(document).unbind("keydown");
 260             Admin.reset()
 261         }
 262         $(document).unbind("keydown").keydown(function(e) {
 263             if (e.keyCode == 27) {
 264                 e.preventDefault();
 265                 cancel();
 266             }
 267         });
 268
 269         $("#newfeature_button").val("annuler");
 270         $("#newfeature_button").unbind("click").click(cancel);
 271
 272         $("#instructions").text(SypStrings.AddHowto);
 273         this.selFeatureControl.deactivate();
 274         this.addFeatureControl.activate();
 275         FeatureMgr.reset();
 276     },
 277
 278     cancelCurrentFeature: function() {
 279         if (AjaxMgr.running) {
 280             return;
 281         }
 282         var feature = this.currentFeature;
 283         if (feature.fid) {
 284             FeatureMgr.move (feature, this.currentFeatureLocation);
 285         } else {
 286             this.dataLayer.removeFeatures([feature]);
 287         }
 288         this.closeEditor();
 289     },
 290
 291     reloadLayer: function (layer) {
 292         layer.destroyFeatures();
 293         layer.loaded = false;
 294         layer.loadGML();
 295     },
 296
 297     Utils: {
 298         escapeHTML: function (str) {
 299             if (!str) {
 300                 return "";
 301             }
 302             return str.
 303              replace(/&/gm, '&amp;').
 304              replace(/'/gm, '&#39;').
 305              replace(/"/gm, '&quot;').
 306              replace(/>/gm, '&gt;').
 307              replace(/</gm, '&lt;');
 308         },
 309
 310         startsWith: function (str, prefix) {
 311             return (str.slice(0, prefix.length) == prefix);
 312         },
 313
 314         indexOf: function (array, item) {
 315             if (array.indexOf !== undefined) {
 316                 return array.indexOf(item);
 317             } else {
 318                 return OpenLayers.Util.indexOf(array, item);
 319             }
 320         }
 321     }
 322 }
 323
 324 var FeatureMgr = {
 325     reset: function() {
 326         this.commError("");
 327     },
 328
 329     add: function(evt) {
 330         var map = Admin.map;
 331         var pos = map.getLonLatFromViewPortPx(evt.xy);
 332         feature = this.update (null, pos, "", "", "");
 333         Admin.addFeatureControl.deactivate();
 334         Admin.selFeatureControl.select(feature);
 335     },
 336
 337     move: function (feature, aLocation) {
 338         if (!feature || !aLocation) {
 339             return;
 340         }
 341         var curLoc = feature.geometry;
 342         feature.geometry.move(aLocation.x - curLoc.x, aLocation.y - curLoc.y);
 343         feature.layer.drawFeature(feature);
 344     },
 345
 346     update: function(feature, lonlat, imgurl, title, description) {
 347         var point = new OpenLayers.Geometry.Point(lonlat.lon, lonlat.lat);
 348         if (!feature) {
 349             feature = new OpenLayers.Feature.Vector(point);
 350             Admin.dataLayer.addFeatures([feature]);
 351         } else {
 352             this.move (feature, point);
 353         }
 354         feature.attributes.name = title;
 355         feature.attributes.description = "<p>" + Admin.Utils.escapeHTML(description) + "</p>"
 356                                 + "<img src=\"" + imgurl + "\">"
 357         return feature;
 358     },
 359
 360     del: function (feature) {
 361         var form = $("#feature_delete");
 362         form.find('input[name="fid"]').val(feature.fid);
 363         AjaxMgr.add({
 364             form: form,
 365             oncomplete: OpenLayers.Function.bind(this.ajaxReply, this)
 366         });
 367     },
 368
 369     save: function (feature) {
 370         var x = feature.geometry.x;
 371         var y = feature.geometry.y;
 372
 373         var mapProj = feature.layer.map.getProjectionObject();
 374         var lonlat = new OpenLayers.LonLat(x, y).
 375                                     transform(mapProj,
 376                                               new OpenLayers.Projection("EPSG:4326"));
 377         var form = $("#feature_update");
 378         form.find('input[name="lon"]').val(lonlat.lon);
 379         form.find('input[name="lat"]').val(lonlat.lat);
 380         form.find('input[name="fid"]').val(feature.fid);
 381         form.find('input[name="keep_img"]').val(
 382             $("#img").attr("src") ? "yes": "no"
 383         );
 384
 385         if (feature.fid) {
 386             form.find('input[name="request"]').val("update");
 387         } else {
 388             form.find('input[name="request"]').val("add");
 389         }
 390         AjaxMgr.add({
 391             form: form,
 392             oncomplete: OpenLayers.Function.bind(this.ajaxReply, this)
 393         });
 394     },
 395
 396     ajaxReply: function (data) {
 397         if (!data) {
 398             this.commError(SypStrings.ServerError);
 399             return;
 400         }
 401
 402         var xml = new OpenLayers.Format.XML().read(data);
 403
 404         switch (xml.documentElement.nodeName.toLowerCase()) {
 405             case "error":
 406                 switch (xml.documentElement.getAttribute("reason")) {
 407                     case "unauthorized":
 408                         $("#login_area").show();
 409                         this.reset();
 410                         Admin.reset();
 411                     break;
 412                     case "server":
 413                         this.commError(SypStrings.ServerError);
 414                         $("title").focus();
 415                     break;
 416                     case "unreferenced":
 417                         this.commError(SypStrings.UnreferencedError);
 418                         Admin.reloadLayer(Admin.dataLayer);
 419                         Admin.closeEditor();
 420                     break;
 421                     case "nochange":
 422                         this.commError(SypStrings.NochangeError);
 423                         Admin.closeEditor();
 424                     break;
 425                     case "request":
 426                         this.commError(SypStrings.RequestError);
 427                         $("title").focus();
 428                     break;
 429                     case "toobig":
 430                         this.commError(SypStrings.ToobigError);
 431                         $("#image_file").parent().html($("#image_file").parent().html());
 432                         $("#image_file").focus();
 433                     break;
 434                     case "notimage":
 435                         this.commError(SypStrings.NotimageError);
 436                         $("#image_file").parent().html($("#image_file").parent().html());
 437                         $("#image_file").focus();
 438                     break;
 439                     default:
 440                         this.commError(SypStrings.UnknownError);
 441                         $("title").focus();
 442                     break;
 443                 }
 444             break;
 445             case "success":
 446                 switch (xml.documentElement.getAttribute("request")) {
 447                     case "del":
 448                         this.commSuccess(SypStrings.DelSucces);
 449                         var someFeature = false;
 450                         var self = this;
 451                         $.each($(xml).find("FEATURE,feature"), function () {
 452                              someFeature = true;
 453                              var id = parseFloat($(this).find("ID:first,id:first").text());
 454                              if ((id === null) || isNaN (id)) {
 455                                 return;;
 456                              }
 457                              var features = Admin.dataLayer.features;
 458                              for (var idx = 0; idx < features.length; idx++) {
 459                                  if (features[idx].fid == id) {
 460                                      Admin.dataLayer.removeFeatures([features[idx]]);
 461                                  }
 462                              }
 463                         });
 464                         if (someFeature == false) {
 465                             this.commError(SypStrings.UnconsistentError);
 466                         } else {
 467                             Admin.closeEditor();
 468                         }
 469                     break;
 470                     case "update":
 471                     case "add":
 472                         var someFeature = false;
 473                         var self = this;
 474                         $.each($(xml).find("FEATURE,feature"), function () {
 475                                 someFeature = true;
 476                                 var id = parseFloat($(this).find("ID:first,id:first").text());
 477                                 if ((id === null) || isNaN (id)) {
 478                                     return;;
 479                                 }
 480
 481                                 var lon = parseFloat($(this).find("LON:first,lon:first").text());
 482                                 if ((typeof (lon) != "number") || isNaN (lon) ||
 483                                         (lon < -180) || (lon > 180)) {
 484                                     return;;
 485                                 }
 486
 487                                 var lat = parseFloat($(this).find("LAT:first,lat:first").text());
 488                                 if ((typeof (lat) != "number") || isNaN (lat) ||
 489                                         (lat < -90) || (lat > 90)) {
 490                                     return;;
 491                                 }
 492
 493                                 var mapProj = Admin.map.getProjectionObject();
 494                                 var lonlat = new OpenLayers.LonLat (lon, lat).
 495                                                 transform( new OpenLayers.Projection("EPSG:4326"), mapProj);
 496
 497                                 var imgurl = $(this).find("IMGURL:first,imgurl:first").text();
 498                                 var title = $(this).find("HEADING:first,heading:first").text();
 499                                 var description = $(this).find("DESCRIPTION:first,description:first").text();
 500
 501                                 feature = self.update (Admin.currentFeature, lonlat, imgurl, title, description);
 502                                 feature.fid = id;
 503                         });
 504
 505                         if (someFeature == false) {
 506                             this.commError(SypStrings.UnconsistentError);
 507                         } else {
 508                             this.commSuccess(SypStrings.UpdateSucces);
 509                             Admin.closeEditor();
 510                         }
 511
 512                     break;
 513                     default:
 514                         this.commError(SypStrings.UnconsistentError);
 515                    break;
 516                 }
 517             break;
 518             default:
 519                 this.commError(SypStrings.UnconsistentError);
 520             break;
 521         }
 522     },
 523
 524     commSuccess: function (message) {
 525         $("#server_comm").text(message);
 526         $("#server_comm").removeClass().addClass("success");
 527     },
 528
 529     commError: function (message) {
 530         $("#server_comm").text(message);
 531         $("#server_comm").removeClass().addClass("error");
 532     }
 533 }
 534
 535 /* maintains a queue of ajax queries, so I'm sure they all execute in the same
 536  * order they were defined */
 537 var AjaxMgr = {
 538     _queue: [],
 539
 540     running: false,
 541
 542     add: function(query) {
 543         this._queue.push(query);
 544         if (this._queue.length > 1) {
 545             return;
 546         } else {
 547             this._runQuery(query);
 548         }
 549     },
 550
 551     _runQuery: function(query) {
 552         var self = this;
 553         $('#api_frame').one("load", function() {
 554             self.running = false;
 555             self._reqEnd();
 556             if (typeof (query.oncomplete) == "function") {
 557                 var body = null;
 558                 try {
 559                     if (this.contentDocument) {
 560                         body = this.contentDocument.body;
 561                     } else if (this.contentWindow) {
 562                         body = this.contentWindow.document.body;
 563                     } else {
 564                         body = document.frames[this.id].document.body;
 565                     }
 566                 } catch (e) {}
 567                     if (body) {
 568                         query.oncomplete(body.innerHTML);
 569                     } else {
 570                         query.oncomplete(null);
 571                     }
 572             }
 573         });
 574         query.form.attr("action", "api.php");
 575         query.form.attr("target", "api_frame");
 576         query.form.attr("method", "post");
 577         this.running = true;
 578         query.form.get(0).submit();
 579         if (typeof (query.onsend) == "function") {
 580             query.onsend();
 581         }
 582     },
 583
 584     _reqEnd: function() {
 585         this._queue.shift();
 586         if (this._queue.length > 0) {
 587             this._reqEnd(this._queue[0]);
 588         }
 589     }
 590 }
 591
 592 var pwdMgr = {
 593
 594     init: function () {
 595         $("#login_form").submit(this.submit);
 596         $("#password").focus().select();
 597     },
 598
 599     reset: function() {
 600         this.commError ("");
 601     },
 602
 603     submit: function () {
 604         try {
 605             pwdMgr.commError("");
 606             var req = {
 607                 form:  $("#login_form"),
 608                 onsend: function() {
 609                     $("#pwd_throbber").css("visibility", "visible");
 610                     $("#login_error").hide();
 611
 612                     // we need a timeout; otherwise those fields will not be submitted
 613                     window.setTimeout(function() {
 614                             // removes focus from #password before disabling it. Otherwise, opera
 615                             // prevents re-focusing it after re-enabling it.
 616                             $("#password").blur();
 617                             $("#login_submit, #password").attr("disabled", "disabled");
 618                     }, 0)
 619                 },
 620                 oncomplete: OpenLayers.Function.bind(pwdMgr.ajaxReply, pwdMgr)
 621             };
 622             AjaxMgr.add(req);
 623         } catch(e) {}
 624         return false;
 625     },
 626
 627     ajaxReply: function (data) {
 628
 629         $("#pwd_throbber").css("visibility", "hidden");
 630         // here, we need a timeout because onsend timeout sometimes has not been triggered yet
 631         window.setTimeout(function() {
 632             $("#login_submit, #password").removeAttr("disabled");
 633         }, 0);
 634
 635         if (!data) {
 636             this.commError(SypStrings.ServerError);
 637             $("#login_error").show();
 638             window.setTimeout(function() {
 639                     $("#password").focus().select();
 640             }, 0);
 641             return;
 642         }
 643         var xml = new OpenLayers.Format.XML().read(data);
 644
 645         switch (xml.documentElement.nodeName.toLowerCase()) {
 646             case "error":
 647                 switch (xml.documentElement.getAttribute("reason")) {
 648                     case "server":
 649                         this.commError(SypStrings.ServerError);
 650                     break;
 651                     case "unauthorized":
 652                         this.commError(SypStrings.UnauthorizedError);
 653                     break;
 654                     case "request":
 655                         this.commError(SypStrings.RequestError);
 656                     break;
 657                     default:
 658                         this.commError(SypStrings.UnknownError);
 659                     break;
 660                 }
 661                 $("#login_error").show();
 662                 window.setTimeout(function() {
 663                         $("#password").focus().select();
 664                 }, 0);
 665             break;
 666             case "success":
 667                 this.reset();
 668                 $("#login_area").hide();
 669             break;
 670             default:
 671                 this.commError(SypStrings.UnconsistentError);
 672             break;
 673         }
 674     },
 675
 676     commError: function (message) {
 677         $("#login_error").text(message);
 678         if (message) {
 679             $("#login_error").show();
 680         } else {
 681             $("#login_error").hide();
 682         }
 683     }
 684 }
 685
 686 $(window).load(function () {
 687     // if using .ready, ie triggers an error when trying to access
 688     // document.namespaces
 689     pwdMgr.init();
 690     $("#newfeature_button").click(function () {
 691         Admin.addNewFeature();
 692     });
 693     $("#editor_close").click(function () {
 694         Admin.cancelCurrentFeature()
 695     });
 696     $("#feature_update").submit(function() {
 697         try {
 698             FeatureMgr.save(Admin.currentFeature);
 699         } catch(e) {}
 700         return false;
 701     });
 702     $("#feature_delete").submit(function() {
 703         try {
 704             FeatureMgr.del(Admin.currentFeature);
 705         } catch(e) {}
 706         return false;
 707     });
 708     $("#image_delete").click(function() {
 709             $("#img").removeAttr('src');
 710             // needs to rebuild element otherwise some browsers still
 711             // display image.
 712             $("#img").parent().html($("#img").parent().html());
 713             $("#img").parent().hide();
 714             $("#image_delete").hide();
 715             $("#image_file").parent().show();
 716     });
 717
 718     Admin.init();
 719 });