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: "media/marker-normal.png",
  60         MARKER_SELECT_ICON: "media/marker-selected.png",
  61         MARKER_TEMPORARY_ICON: "media/marker-temp.png",
  62         MARKER_HEIGHT: 25
  63     },
  64
  65     map: null,
  66     baseLayer: null,
  67     dataLayer: null,
  68     selFeatureControl: null,
  69     moveFeatureControl: null,
  70     addFeatureControl: null,
  71
  72     currentFeature: null,
  73     currentFeatureLocation: null,
  74
  75     init: function () {
  76         this.map = new OpenLayers.Map ("map", {
  77                 controls:[
  78                     new OpenLayers.Control.Navigation (),
  79                     new OpenLayers.Control.PanZoom ()
  80                 ],
  81                 projection: new OpenLayers.Projection("EPSG:900913"),
  82                 displayProjection: new OpenLayers.Projection("EPSG:4326")
  83          });
  84
  85          this.baseLayer = this.createBaseLayer ();
  86          this.dataLayer = this.createDataLayer ();
  87          this.map.addLayers([this.baseLayer, this.dataLayer]);
  88
  89          // controls
  90          this.selFeatureControl = this.createSelectFeatureControl();
  91          this.map.addControl(this.selFeatureControl);
  92          this.moveFeatureControl = this.createMoveFeatureControl();
  93          this.map.addControl(this.moveFeatureControl);
  94          this.addFeatureControl = this.createNewfeatureControl();
  95          this.map.addControl(this.addFeatureControl);
  96
  97          // position
  98          var centerBounds = new OpenLayers.Bounds();
  99
 100          var mapProj = this.map.getProjectionObject();
 101          var sypOrigProj = new OpenLayers.Projection("EPSG:4326");
 102
 103          var bottomLeft = new OpenLayers.LonLat(sypOrig[0],sypOrig[1]);
 104          bottomLeft = bottomLeft.transform(sypOrigProj, mapProj);
 105          var topRight = new OpenLayers.LonLat(sypOrig[2],sypOrig[3])
 106          topRight = topRight.transform(sypOrigProj, mapProj);
 107
 108          centerBounds.extend(bottomLeft);
 109          centerBounds.extend(topRight);
 110
 111          // at that moment, ie does not know size of the map, we need to update
 112          // manually
 113          this.map.updateSize();
 114          this.map.zoomToExtent(centerBounds);
 115
 116          this.reset();
 117     },
 118
 119     reset: function() {
 120         this.addFeatureControl.deactivate();
 121         this.moveFeatureControl.deactivate();
 122         this.selFeatureControl.activate();
 123         this.checkForFeatures();
 124         $("#newfeature_button").show().val(SypStrings.AddItem);
 125         $("#newfeature_button").unbind("click").click(function () {
 126             Admin.addNewFeature();
 127         });
 128     },
 129
 130     createBaseLayer: function () {
 131         return new OpenLayers.Layer.OSM("OSM");
 132     },
 133
 134     createDataLayer: function () {
 135         var styleMap = new OpenLayers.StyleMap (
 136                         {"default": {
 137                              externalGraphic: this.Settings.MARKER_ICON,
 138                              graphicHeight: this.Settings.MARKER_HEIGHT || 32
 139                                 },
 140                          "temporary": {
 141                              externalGraphic: this.Settings.MARKER_TEMPORARY_ICON,
 142                              graphicHeight: this.Settings.MARKER_HEIGHT || 32
 143                          },
 144                          "select": {
 145                              externalGraphic: this.Settings.MARKER_SELECT_ICON,
 146                              graphicHeight: this.Settings.MARKER_HEIGHT || 32
 147                     }});
 148
 149         var layer = new OpenLayers.Layer.GML("KML", "items.php",
 150            {
 151             styleMap: styleMap,
 152             format: OpenLayers.Format.KML,
 153             projection: this.map.displayProjection,
 154             eventListeners: { scope: this,
 155                 loadend: this.checkForFeatures
 156             }
 157        });
 158
 159         return layer;
 160     },
 161
 162     createMoveFeatureControl: function () {
 163         var control = new OpenLayers.Control.SypDragFeature(
 164                 this.dataLayer, {
 165                          });
 166         return control;
 167     },
 168
 169     createSelectFeatureControl: function () {
 170         var control = new OpenLayers.Control.SelectFeature(
 171                 this.dataLayer, {
 172                         onSelect: OpenLayers.Function.bind(this.onFeatureSelect, this)
 173                          });
 174         return control;
 175     },
 176
 177     createNewfeatureControl: function () {
 178         var control = new OpenLayers.Control ();
 179         var handler = new OpenLayers.Handler.Click(control, {
 180                 'click': OpenLayers.Function.bind(FeatureMgr.add, FeatureMgr)
 181             });
 182         control.handler = handler;
 183         return control;
 184     },
 185
 186     onFeatureSelect: function (feature) {
 187         this.showEditor(feature);
 188         FeatureMgr.reset();
 189         this.selFeatureControl.deactivate();
 190         this.moveFeatureControl.activate();
 191     },
 192
 193     closeEditor: function() {
 194         if (this.currentFeature && this.currentFeature.layer) {
 195             this.selFeatureControl.unselect(this.currentFeature);
 196         }
 197         this.currentFeature = null;
 198         this.currentFeatureLocation = null;
 199         $("#img").removeAttr('src');
 200         $("#img").parent().html($("#img").parent().html());
 201         $("#img").parent().show();
 202         $("#title, #description").val("");
 203         $("#editor").hide();
 204         // do it once before hidding and once after hidding to work in all cases
 205         $("#title, #description").val("");
 206         $("#image_file").parent().html($("#image_file").parent().html());
 207         $(document).unbind("keydown");
 208         this.checkForFeatures();
 209         this.reset();
 210     },
 211
 212     showEditor: function (feature) {
 213         $("#newfeature_button").hide();
 214         if (feature.fid) {
 215             $("#delete").show();
 216         } else {
 217             $("#delete").hide();
 218         }
 219         $(document).unbind("keydown").keydown(function(e) {
 220             if (e.keyCode == 27) {
 221                 Admin.cancelCurrentFeature()
 222                 e.preventDefault();
 223             }
 224         });
 225         this.currentFeature = feature;
 226         this.currentFeatureLocation = new OpenLayers.Pixel(feature.geometry.x, feature.geometry.y);
 227         $("#editor").show();
 228         $("#instructions").text(SypStrings.DragDropHowto);
 229         $("#title").val(feature.attributes.name);
 230         var fullDesc = $(feature.attributes.description).parent();
 231         $("#description").val(fullDesc.find('p').text());
 232         var src = fullDesc.find('img').attr('src');
 233         if (src) {
 234             $("#img").parent().show();
 235             $("#img").attr('src', src);
 236             $("#image_file").parent().hide();
 237             $("#image_delete").show();
 238         } else {
 239             $("#img").parent().hide();
 240             $("#image_file").parent().show();
 241             $("#image_delete").hide();
 242         }
 243         $("#title").select().focus();
 244     },
 245
 246     checkForFeatures: function () {
 247         if (this.dataLayer.features.length != 0) {
 248             $("#instructions").text(SypStrings.SelectHowto);
 249         }
 250     },
 251
 252     addNewFeature: function () {
 253         function cancel() {
 254             $(document).unbind("keydown");
 255             Admin.reset()
 256         }
 257         $(document).unbind("keydown").keydown(function(e) {
 258             if (e.keyCode == 27) {
 259                 e.preventDefault();
 260                 cancel();
 261             }
 262         });
 263
 264         $("#newfeature_button").val("annuler");
 265         $("#newfeature_button").unbind("click").click(cancel);
 266
 267         $("#instructions").text(SypStrings.AddHowto);
 268         this.selFeatureControl.deactivate();
 269         this.addFeatureControl.activate();
 270         FeatureMgr.reset();
 271     },
 272
 273     cancelCurrentFeature: function() {
 274         if (AjaxMgr.running) {
 275             return;
 276         }
 277         var feature = this.currentFeature;
 278         if (feature.fid) {
 279             FeatureMgr.move (feature, this.currentFeatureLocation);
 280         } else {
 281             this.dataLayer.removeFeatures([feature]);
 282         }
 283         this.closeEditor();
 284     },
 285
 286     reloadLayer: function (layer) {
 287         layer.destroyFeatures();
 288         layer.loaded = false;
 289         layer.loadGML();
 290     },
 291
 292     Utils: {
 293         escapeHTML: function (str) {
 294             if (!str) {
 295                 return "";
 296             }
 297             return str.
 298              replace(/&/gm, '&amp;').
 299              replace(/'/gm, '&#39;').
 300              replace(/"/gm, '&quot;').
 301              replace(/>/gm, '&gt;').
 302              replace(/</gm, '&lt;');
 303         },
 304
 305         startsWith: function (str, prefix) {
 306             return (str.slice(0, prefix.length) == prefix);
 307         },
 308
 309         indexOf: function (array, item) {
 310             if (array.indexOf !== undefined) {
 311                 return array.indexOf(item);
 312             } else {
 313                 return OpenLayers.Util.indexOf(array, item);
 314             }
 315         }
 316     }
 317 }
 318
 319 var FeatureMgr = {
 320     reset: function() {
 321         this.commError("");
 322     },
 323
 324     add: function(evt) {
 325         var map = Admin.map;
 326         var pos = map.getLonLatFromViewPortPx(evt.xy);
 327         feature = this.update (null, pos, "", "", "");
 328         Admin.addFeatureControl.deactivate();
 329         Admin.selFeatureControl.select(feature);
 330     },
 331
 332     move: function (feature, aLocation) {
 333         if (!feature || !aLocation) {
 334             return;
 335         }
 336         var curLoc = feature.geometry;
 337         feature.geometry.move(aLocation.x - curLoc.x, aLocation.y - curLoc.y);
 338         feature.layer.drawFeature(feature);
 339     },
 340
 341     update: function(feature, lonlat, imgurl, title, description) {
 342         var point = new OpenLayers.Geometry.Point(lonlat.lon, lonlat.lat);
 343         if (!feature) {
 344             feature = new OpenLayers.Feature.Vector(point);
 345             Admin.dataLayer.addFeatures([feature]);
 346         } else {
 347             this.move (feature, point);
 348         }
 349         feature.attributes.name = title;
 350         feature.attributes.description = "<p>" + Admin.Utils.escapeHTML(description) + "</p>"
 351                                 + "<img src=\"" + imgurl + "\">"
 352         return feature;
 353     },
 354
 355     del: function (feature) {
 356         var form = $("#feature_delete");
 357         form.find('input[name="fid"]').val(feature.fid);
 358         AjaxMgr.add({
 359             form: form,
 360             oncomplete: OpenLayers.Function.bind(this.ajaxReply, this),
 361             onsend: function() { $("#editor_throbber").css("visibility", "visible"); }
 362         });
 363     },
 364
 365     save: function (feature) {
 366         var x = feature.geometry.x;
 367         var y = feature.geometry.y;
 368
 369         var mapProj = feature.layer.map.getProjectionObject();
 370         var lonlat = new OpenLayers.LonLat(x, y).
 371                                     transform(mapProj,
 372                                               new OpenLayers.Projection("EPSG:4326"));
 373         var form = $("#feature_update");
 374         form.find('input[name="lon"]').val(lonlat.lon);
 375         form.find('input[name="lat"]').val(lonlat.lat);
 376         form.find('input[name="fid"]').val(feature.fid);
 377         form.find('input[name="keep_img"]').val(
 378             $("#img").attr("src") ? "yes": "no"
 379         );
 380
 381         if (feature.fid) {
 382             form.find('input[name="request"]').val("update");
 383         } else {
 384             form.find('input[name="request"]').val("add");
 385         }
 386         AjaxMgr.add({
 387             form: form,
 388             oncomplete: OpenLayers.Function.bind(this.ajaxReply, this),
 389             onsend: function() { $("#editor_throbber").css("visibility", "visible"); }
 390         });
 391     },
 392
 393     ajaxReply: function (data) {
 394         $("#editor_throbber").css("visibility", "hidden");
 395         if (!data) {
 396             this.commError(SypStrings.ServerError);
 397             return;
 398         }
 399
 400         var xml = new OpenLayers.Format.XML().read(data);
 401
 402         switch (xml.documentElement.nodeName.toLowerCase()) {
 403             case "error":
 404                 switch (xml.documentElement.getAttribute("reason")) {
 405                     case "unauthorized":
 406                         $("#login_area").show();
 407                         $("#cookie_warning").show();
 408                         this.reset();
 409                         Admin.cancelCurrentFeature();
 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 });