Mercurial > dive4elements > river

annotate flys-client/src/main/java/de/intevation/flys/client/client/ui/map/ExternalWMSWindow.java @ 1411:63be3137abac

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Parse and display WMS layers supported by a user specified WMS service. flys-client/trunk@3298 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 21 Nov 2011 21:00:03 +0000
parents 6bb2c1ffab2b
children 659a488243da
rev   line source
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6c8a29abbe30 Added an initial control that allows (when it is finished) adding map layers from external WMS.
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1 package de.intevation.flys.client.client.ui.map;
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2
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3 import com.google.gwt.core.client.GWT;
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4 import com.google.gwt.user.client.rpc.AsyncCallback;
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5 import com.google.gwt.user.client.ui.TextBox;
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6
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7 import com.smartgwt.client.util.SC;
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8 import com.smartgwt.client.widgets.Button;
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9 import com.smartgwt.client.widgets.Canvas;
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10 import com.smartgwt.client.widgets.Window;
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11 import com.smartgwt.client.widgets.events.ClickEvent;
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12 import com.smartgwt.client.widgets.events.ClickHandler;
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13 import com.smartgwt.client.widgets.layout.HLayout;
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14 import com.smartgwt.client.widgets.layout.Layout;
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15 import com.smartgwt.client.widgets.layout.VLayout;
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16
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17 import de.intevation.flys.client.shared.model.Capabilities;
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18 import de.intevation.flys.client.client.FLYSConstants;
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19 import de.intevation.flys.client.client.services.GCService;
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20 import de.intevation.flys.client.client.services.GCServiceAsync;
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23 public class ExternalWMSWindow extends Window {
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25 protected GCServiceAsync gcService = GWT.create(GCService.class);
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26 protected FLYSConstants MSG = GWT.create(FLYSConstants.class);
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27
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28 protected Layout inputPanel;
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29 protected Layout infoPanel;
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30 protected Layout layersPanel;
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31
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32 protected Capabilities capabilites;
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34 protected String url;
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35
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36
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37 public ExternalWMSWindow() {
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38 super();
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39 }
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40
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41
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42 protected void setUrl(String url) {
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43 this.url = url;
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44 }
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45
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46
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47 protected String getUrl() {
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48 return url;
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49 }
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50
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51
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52 protected String getCapabilitiesUrl() {
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53 String cUrl = url;
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54
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55 if (url.indexOf("?") >= 0) {
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56 cUrl += "&SERVICE=WMS&REQUEST=GetCapabilities";
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57 }
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58 else {
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59 cUrl += "?SERVICE=WMS&REQUEST=GetCapabilities";
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60 }
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61
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62 return cUrl;
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63 }
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64
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65
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66 protected void setCapabilites(Capabilities capabilites) {
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67 this.capabilites = capabilites;
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68 }
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69
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70
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71 public void start() {
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72 show();
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73 centerInPage();
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74
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75 goToInputPanel();
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76 }
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77
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78
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79 protected void goToInputPanel() {
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80 clearItems();
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81
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82 inputPanel = createInputPanel();
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83
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84 addItem(inputPanel);
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85
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86 setWidth(380);
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87 setHeight(140);
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88 }
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89
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91 protected void goToInfoPanel() {
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92 clearItems();
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93
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94 infoPanel = createInfoPanel();
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95
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96 addItem(infoPanel);
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97
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98 setWidth(500);
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99 setHeight(500);
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ec6e4dad1279 Read and display all FLYS relevant information of Capabilities documents.
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100
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101 centerInPage();
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102 }
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103
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104
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105 protected void goToLayersPanel() {
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106 clearItems();
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107
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108 layersPanel = createLayersPanel();
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109
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110 addItem(layersPanel);
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111
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112 setWidth(500);
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113 setHeight(500);
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114 }
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115
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116
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117 protected void clearItems() {
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118 Canvas[] items = getItems();
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119
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120 if (items != null) {
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121 for (Canvas item: items) {
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122 removeItem(item);
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123 }
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124 }
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125 }
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126
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127
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128 protected Layout createInputPanel() {
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129 setTitle(MSG.addwmsInputTitle());
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130
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131 final TextBox url = new TextBox();
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132 url.setHeight("25px");
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133 url.setWidth("326px");
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134
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135 String oldUrl = getUrl();
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136 if (oldUrl != null && oldUrl.length() > 0) {
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137 url.setValue(oldUrl);
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138 }
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139
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140 ClickHandler goHandler = new ClickHandler() {
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141 @Override
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142 public void onClick(ClickEvent e) {
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143 String newUrl = url.getValue();
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144
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145 if (!isUrlValid(newUrl)) {
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146 SC.warn(MSG.addwmsInvalidURL());
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147 return;
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148 }
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149
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150 setUrl(url.getValue());
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151
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152 doCapabilitesRequest();
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153 }
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154 };
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155
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156 ClickHandler cancelHandler = new ClickHandler() {
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157 @Override
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158 public void onClick(ClickEvent e) {
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159 quit();
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160 }
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161 };
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162
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163 VLayout root = new VLayout();
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164 root.setHeight(75);
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165 root.setMargin(10);
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166 root.setLayoutMargin(10);
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167
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168 root.addMember(url);
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169 root.addMember(createButtonPanel(null, goHandler, cancelHandler));
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170
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171 return root;
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172 }
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173
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174
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175 protected Layout createInfoPanel() {
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176 setTitle(MSG.addwmsInfoTitle());
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177
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178 ClickHandler backHandler = new ClickHandler() {
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179 @Override
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180 public void onClick(ClickEvent e) {
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181 goToInputPanel();
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182 }
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183 };
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184
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185 ClickHandler goHandler = new ClickHandler() {
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186 @Override
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187 public void onClick(ClickEvent e) {
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188 goToLayersPanel();
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189 }
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190 };
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191
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192 ClickHandler cancelHandler = new ClickHandler() {
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193 @Override
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194 public void onClick(ClickEvent e) {
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195 quit();
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196 }
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197 };
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198
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199 VLayout root = new VLayout();
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200 VLayout panel = new CapabilitiesPanel(capabilites);
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201
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202 root.setLayoutMargin(10);
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203 panel.setHeight(420);
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204
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205 root.addMember(panel);
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206 root.addMember(createButtonPanel(backHandler, goHandler, cancelHandler));
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207
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208 return root;
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209 }
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210
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211
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212 protected Layout createLayersPanel() {
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213 setTitle(MSG.addwmsLayerTitle());
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214
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215 ClickHandler backHandler = new ClickHandler() {
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216 @Override
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217 public void onClick(ClickEvent e) {
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218 goToInfoPanel();
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219 }
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220 };
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221
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222 ClickHandler goHandler = new ClickHandler() {
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223 @Override
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224 public void onClick(ClickEvent e) {
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225 goToLayersPanel();
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226 }
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227 };
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228
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229 ClickHandler cancelHandler = new ClickHandler() {
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230 @Override
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231 public void onClick(ClickEvent e) {
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232 quit();
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233 }
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234 };
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235
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236 VLayout root = new VLayout();
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237 WMSLayersTree tree = new WMSLayersTree(capabilites);
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238
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239 root.setLayoutMargin(10);
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240 tree.setHeight(420);
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241
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242 root.addMember(tree);
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243 root.addMember(createButtonPanel(backHandler, goHandler, cancelHandler));
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244
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245 return root;
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246 }
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247
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248
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249 /**
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250 * @param back
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251 * @param ok
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252 * @param cancel
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253 *
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254 * @return
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255 */
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256 protected Layout createButtonPanel(
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257 ClickHandler backHandler,
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258 ClickHandler goHandler,
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259 ClickHandler cancelHandler
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260 ) {
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261 Button back = new Button("Back");
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262 Button go = new Button("Go on");
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263 Button cancel = new Button("Cancel");
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264
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265 if (backHandler != null) {
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266 back.addClickHandler(backHandler);
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267 }
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268 else {
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269 back.setDisabled(true);
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270 }
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271
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272 if (goHandler != null) {
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273 go.addClickHandler(goHandler);
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274 }
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275 else {
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276 go.setDisabled(true);
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277 }
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278
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279 if (cancelHandler != null) {
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280 cancel.addClickHandler(cancelHandler);
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281 }
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282 else {
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283 cancel.setDisabled(true);
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284 }
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285
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286 HLayout buttonPanel = new HLayout();
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287 buttonPanel.setHeight(25);
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288 buttonPanel.setMembersMargin(15);
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289 buttonPanel.setLayoutTopMargin(10);
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290 buttonPanel.addMember(back);
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291 buttonPanel.addMember(go);
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292 buttonPanel.addMember(cancel);
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293
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294 return buttonPanel;
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295 }
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296
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297
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298 protected boolean isUrlValid(String url) {
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299 // TODO Improve URL validation
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300 return !(url == null || url.length() == 0);
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301 }
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302
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303
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304 protected void quit() {
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305 destroy();
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306 }
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307
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308
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309 protected void doCapabilitesRequest() {
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310 gcService.query(getCapabilitiesUrl(),new AsyncCallback<Capabilities>() {
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311 public void onFailure(Throwable e) {
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312 SC.warn(MSG.getString(e.getMessage()));
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313 }
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314
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315 public void onSuccess(Capabilities capabilites) {
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316 setCapabilites(capabilites);
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317 goToInfoPanel();
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318 }
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319 });
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320 }
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321 }
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322 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org