esri_core.js

来自「esri的ArcGIS Server超级学习模板程序（for java）」· JavaScript 代码 · 共 1,599 行 · 第 1/4 页

      var s = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "')";
      img.src = EsriControls.contextPath + "images/pixel.gif";
      if (img.runtimeStyle.filter) img.runtimeStyle.filter = img.runtimeStyle.filter.replace(alphaImageLoaderRegExp, s);
      else img.runtimeStyle.filter = s;
    }
    else img.src = src;
  }

  this.createGraphicsElement = function(id, cont) { return eval("new Esri" + this.graphicsType + "GraphicsElement(id, cont);"); }

  this.getStyleValue = function(s) {
    if (typeof s == "number") return s;
    var index = s.indexOf("px");
    if (index == -1) {
      index = s.indexOf("%");
      if (index == -1) return s;
      else return parseInt(s.substring(0, index));
    }
    return parseInt(s.substring(0, index));
  }

  this.addFormElement = function(fId, name, value) {
    var eId = fId + "_input_" + name;
    var inp = document.getElementById(eId);
    if (! inp) inp = document.createElement("input");
    inp.type = "HIDDEN";
    inp.id = eId;
    inp.name = name;
    inp.value = value;
    document.forms[fId].appendChild(inp);
  }

  this.removeFormElement = function(fId, name) {
    var inp = document.getElementById(fId + "_input_" + name);
    if (! inp) inp = document.getElementById(name);
    if (inp) inp.parentNode.removeChild(inp);
  }

  this.getJSessionId = function() {
    var start;
    if ((start = document.cookie.indexOf("JSESSIONID=")) != -1) {
      start = document.cookie.indexOf("=", start) + 1;
      var end = document.cookie.indexOf(";", start);
      return document.cookie.substring(start, (end == -1) ? document.cookie.length : end);
    }
    return "";
  }

  this.getServerUrl = function(fId) {
    if (document.forms[fId].action.indexOf(";jsessionid=") != -1) return encodeURI(document.forms[fId].action);
    else if (this.getJSessionId()) return encodeURI(document.forms[fId].action + ";jsessionid=" + this.getJSessionId());
    else return encodeURI(document.forms[fId].action);
  }

  this.createXmlHttpObject = function() {
    if (this.isIE) {
      try { return new ActiveXObject("Msxml2.XMLHTTP"); }
      catch (exception) { return new ActiveXObject("Microsoft.XMLHTTP"); }
    }
    return new XMLHttpRequest();
  }

  this.buildRequestParams = function(fId) {
    var form = document.forms[fId];
    var params = "";
    for (i=0;i<form.elements.length;i++) {
      var e = form.elements[i];
      var eType = e.type;
      if (eType && e.name.trim().length > 0) {
        var eLow = eType.toLowerCase();
        if (eLow == "checkbox") { if (e.checked) params += "&" + e.name + "=" + encodeURIComponent(e.value); }
        else if (eLow == "select-multiple") {
          for (var c=0;c<e.childNodes.length;c++) {
            var child = e.childNodes.item(c);
            if (child.selected) params += "&" + e.name + "=" + encodeURIComponent(child.value);
          }
        }
        else if (eLow == "radio") { if (e.checked) params += "&" + e.name + "=" + encodeURIComponent(e.value); }
        else if (eLow != "button" && eLow != "submit") params += "&" + e.name + "=" + encodeURIComponent(e.value);
      }
    }
    return (params.indexOf("&") == 0) ? params.substring(1) : params;
  }

  this.submitForm = function(fId, async, callbackFunc) {
    if (! async || ! this.doPostBack) {
      this.removeFormElement(fId, "doPostBack");
      document.forms[fId].submit();
    }
    else {
      var params = "formId=" + encodeURIComponent(fId) + "&" + this.buildRequestParams(fId);
      this.sendAjaxRequest(this.getServerUrl(fId), params, false, callbackFunc);
    }
  }

  this.sendAjaxRequest = function(url, params, doGET, callback, contentType) {
    try {
      params = "isXMLHttp=" + encodeURIComponent("true") + "&" + params;

      var xh = this.createXmlHttpObject();
      xh.onreadystatechange = function() {
        if (xh != null && xh.readyState == 4) {
          try {
            if (xh.status == 200) {
              var xml = EsriUtils.getXmlDocument(xh);
              var error = EsriUtils.getErrorFromDocument(xml);
              if (error !== null) {
                if (error)
                  alert(error);
                return false;
              }
              
              if (xml) {
                var hiddenView = document.getElementById("com.sun.faces.VIEW");
                if (hiddenView) {
                  var viewState = xml.getElementsByTagName("com.sun.faces.VIEW");
                  if (viewState && viewState.length > 0) {
                     hiddenView.value = viewState.item(0).firstChild.nodeValue; 
                  }
                }else{
        					hiddenView = document.getElementsByName("com.sun.faces.VIEW");
                  if (hiddenView && hiddenView.length > 0) {
                    var viewState = xml.getElementsByTagName("com.sun.faces.VIEW");
                    if (viewState && viewState.length > 0) {
                      hiddenView[0].value = viewState.item(0).firstChild.nodeValue;
                    }
                  }
                  else {
                    hiddenView = document.getElementById("javax.faces.ViewState");
                    if (hiddenView) {
                      var viewState = xml.getElementsByTagName("com.sun.faces.VIEW");
                      if (viewState && viewState.length > 0) {
                        hiddenView.value = viewState.item(0).firstChild.nodeValue;
                      }
                    }
                  }
                }
              }
            }
            else {
              window.location.href = EsriControls.contextPath + "error.html";
            }
          }
          catch (exception) {
            alert("An error occurred while processing your request.");
            window.location.href = EsriControls.contextPath + "error.html";
            return false;
          }
        }
        callback(xh);
        if (xh != null && xh.readyState == 4) {
          xh = null;
        }
      };

      if (doGET) {
        xh.open("GET", url + "?" + params, true);
        xh.send(null);
      }
      else {
        xh.open("POST", url, true);
        xh.setRequestHeader("content-type", (contentType) ? contentType : "application/x-www-form-urlencoded");
        xh.send(params);
      }
      return xh;
    }
    catch (exception) { return null; }
  }

  this.getXmlDocument = function(xh) {
    var xml = xh.responseXML;
    if (xml && xml.firstChild) return xml;
    else return this.stringToXml(xh.responseText);
  }

  this.stringToXml = function(s) {
    try {
      var xml;
      if (EsriUtils.isIE) {
        xml = new ActiveXObject("Microsoft.XMLDOM");
        xml.async = "false";
        xml.loadXML(s);
      }
      else {
        var parser = new DOMParser();
        xml = parser.parseFromString(s, "text/xml");
      }
      return xml;
    }
    catch (e) { return null; }
  }

  this.getErrorFromDocument = function(xml) {
    var errorTags = xml.getElementsByTagName("error");
    if (errorTags.length > 0) {
      var message = errorTags.item(0).getElementsByTagName("message").item(0).firstChild.nodeValue;
      var redirect = "redirect=";
      var i = message.indexOf(redirect);
      if (i != -1) {
        message = message.substring(i + redirect.length);
        window.location.href = EsriControls.contextPath + (message.indexOf("/") == 0 ? message.substring(1) : message);
        return "";
      }
      return message;
    }
    return null;
  }

  function decToHex(d) { return "0123456789abcdef".substring(d, d+1); }
  function hexToDec(h) { return "0123456789abcdef".indexOf(h); }

  this.toHex = function(n) { return (decToHex((0xf00000 & n) >> 20) + decToHex((0x0f0000 & n) >> 16) + decToHex((0x00f000 & n) >> 12) + decToHex((0x000f00 & n) >> 8) + decToHex((0x0000f0 & n) >> 4) + decToHex((0x00000f & n) >> 0)); }

  this.fromHex = function(h) {
    while (h.length < 6) h = "0" + h;
    return ((hexToDec(h.substring(0,1)) << 20) + (hexToDec(h.substring(1,2)) << 16) + (hexToDec(h.substring(2,3)) << 12) + (hexToDec(h.substring(3,4)) << 8) + (hexToDec(h.substring(4,5)) << 4) + (hexToDec(h.substring(5,6))));
  }

  this.getCheckBoxStates = function(root) {
    var chks = new Array();
    var inputs = root.getElementsByTagName("input");
    if (inputs) {
      for (var i=0, il=inputs.length; i<il; i++) {
        var input = inputs[i];
        if (input.type == "checkbox") chks[input.id] = input.checked;
      }
    }
    return chks;
  }

  this.setCheckBoxStates = function(root, chks) {
    var inputs = root.getElementsByTagName("input");
    if (inputs) {
      for (var i=0, il=inputs.length; i<il; i++) {
        var input = inputs[i];
        if (input.type == "checkbox" && chks[input.id] != undefined) input.checked = chks[input.id];
      }
    }
  }
  
  this.getXmlText = function(node) {
    if(! node) return null;
    return node.innerText || node.textContent || (node.firstChild ? node.firstChild.nodeValue : null);
  }
}

function EsriPageElement(id, l, t, w, h) {
  this.id = id;
  this.bounds = new EsriRectangle((l) ? l : 0, (t) ? t : 0, (w) ? w : 0, (h) ? h : 0);

  this.divId = "";
  this.divObject = null;

  this.resize = function(wd, ht) {
    this.bounds.reshape(this.bounds.left, this.bounds.top, wd, ht);
    EsriUtils.setElementStyle(this.divObject, "width:" + wd + "px; height:" + ht + "px;");
  }
}

EsriPageElement.prototype.show = function() { EsriUtils.showElement(this.divObject); }
EsriPageElement.prototype.hide = function() { EsriUtils.hideElement(this.divObject); }

function EsriControl(id, ct, l, t, w, h) {
  this.inheritsFrom(new EsriPageElement(id, l, t, w, h));
  this.type = ct;
  this.updateListeners = new Array();
  this.updateListenerNames = new Array();
}

EsriControl.prototype.addUpdateListener = function(name, listener) {
  if (this.updateListenerNames.indexOf(name) == -1) this.updateListenerNames.push(name);
  this.updateListeners[name] = listener;
}

EsriControl.prototype.removeUpdateListener = function(name) {
  var index = this.updateListenerNames.indexOf(name);
  if (index != -1) {
    this.updateListenerNames.splice(index, 1);
    this.updateListeners[name] = null;
  }
}

if (! window.EsriControls) {
  window.EsriControls = new function() {
    this.maps = new Array();
    this.mapIds = new Array();
    this.toolbars = new Array();
    this.toolbarIds = new Array();
    this.tocs = new Array();
    this.tocIds = new Array();
    this.overviews = new Array();
    this.overviewIds = new Array();
    this.tasks = new Array();
    this.taskIds = new Array();

    var postBackTagHandlers = new Array();
    var postBackTagNames = new Array();

    this.contextPath = "";

    var self = this;

    this.addPostBackTagHandler = function(tagName, handler) {
      if (postBackTagNames.indexOf(tagName) == -1) {
        postBackTagNames.push(tagName);
        postBackTagHandlers[tagName] = new Array();
      }

      if (postBackTagHandlers[tagName].indexOf(handler) != -1) return;
      postBackTagHandlers[tagName].push(handler);
    }

    this.removePostBackTagHandler = function(tagName, handler) {
      var i = postBackTagHandlers[tagName].indexOf(handler);
      if (i != -1) return postBackTagHandlers[tagName].splice(i, 1);
      return null;
    }

    this.processPostBack = function(xh) {
      if (xh != null && xh.readyState == 4 && xh.status == 200)
        EsriControls.processPostBackXML(EsriUtils.getXmlDocument(xh));
    }

    this.processPostBackXML = function(xml) {
      var formTags = xml.getElementsByTagName("form");
      var eventSources = new Array();
      if (formTags.length > 0) {
        var formTag = formTags.item(0);
        var formId = formTag.getElementsByTagName("id").item(0).firstChild.nodeValue;
        EsriUtils.removeFormElement(formId, "doPostBack");

        var eventSourceTags = formTag.getElementsByTagName("eventsource");
        for (var i=0;i<eventSourceTags.length;i++) {
          var eventSource = eventSourceTags.item(i).firstChild.nodeValue;
          eventSources.push(eventSource);
          EsriUtils.removeFormElement(formId, eventSource);
          EsriUtils.removeFormElement(formId, eventSource + "_value");
          EsriUtils.removeFormElement(formId, eventSource + "_mode");
        }
      }

      for (var h=0;h<postBackTagNames.length;h++) {
        var tagName = postBackTagNames[h];
        var tags = xml.getElementsByTagName(tagName);
        for (var i=0;i<tags.length;i++)
          for (var l=0;l<postBackTagHandlers[tagName].length;l++)
            postBackTagHandlers[tagName][l](tags.item(i), eventSources);
      }

      for (var m=0;m<self.mapIds.length;m++) {
        var map = self.maps[self.mapIds[m]];
        map.hideLoading();
        map.updateWebGraphics();
      }
    }
  }
}

function EsriAction() {
  this.name = "EsriAction";
  this.graphicsZIndex = 49;
  this.symbol = new EsriGraphicsSymbol("#f00", 1, 2, "#fff", 0);
  this.cursor = "crosshair";
  this.isActive = false;

  this.activate = null;
  this.deactivate = null;
  this.reactivate = function() {}
}

function EsriToolItem(id, tn, act, isM) {
  this.id = id;
  this.name = tn;
  this.action = act;
  this.isMarker = isM;
  this.showLoading = true;
  this.isCommand = this.isDisabled = this.clientPostBack = this.isActive = false;
  this.toolTip = this.element = this.control = null;
  this.defaultStyle = this.hoverStyle = this.selectedStyle = this.disabledStyle = null;
  this.defaultImage = this.hoverImage = this.selectedImage = this.disabledImage = null;

  this.activate = function() { if (this.action) this.action.activate(this.element, this.postAction); this.isActive = true; }
  this.deactivate = function() { if (this.action) this.action.deactivate(); this.isActive = false; }
  this.postAction = null;
}

function EsriDrawLineAction() {
  this.inheritsFrom(new EsriAction());
  this.name = "EsriDrawLineAction";
  var element, callback, contCallback, bounds, startPt, gr, graphic;
  var createGraphic = true;
  var self = this;

  this.activate = function(elem, cbF, ccbF, ge) {
    element = elem;
    callback = cbF;
    contCallback = ccbF;

    if (ge) {
      gr = ge;