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LegendAndMetadataDisplay.js
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LegendAndMetadataDisplay.js
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/*
*
* LegendAndMetadataDisplay.js -- part of Quantum GIS Web Client
*
* Copyright (2010-2013), The QGIS Project All rights reserved.
* Quantum GIS Web Client is released under a BSD license. Please see
* https://github.com/qgis/qgis-web-client/blob/master/README
* for the full text of the license and the list of contributors.
*
*/
//scripts to display legend graphic and per layer metadata in a separate Ext window
function showInteractiveLegendAndMetadata(layertitle) {
var layername = wmsLoader.layerTitleNameMapping[layertitle];
//initialize Ext Window if undefined
if (legendMetadataWindow == undefined) {
setupLegendAndMetadataWindow();
}
legendMetadataWindow.setTitle(legendMetadataWindowTitleString[lang] + " '"+layertitle+"'");
if (legendMetadataWindow_active == false) {
legendMetadataWindow.show();
}
//create legend URI from GlobalOptions.js interactiveLegendGetLegendURL
if (typeof(interactiveLegendGetLegendURL) == 'undefined'){
Ext.MessageBox.alert('Configuration error', 'interactiveLegendGetLegendURL is not defined. Set it in GlobalOptions.js');
return;
}
var legendUrl = interactiveLegendGetLegendURL + Ext.urlEncode({
layer: layername,
});
legendMetaTabPanel = Ext.getCmp('legendMetaTabPanel');
//create metadata text
legendMetaTabPanel.activate(metadataTab);
var metadataText = '<style type="text/css">.even { background-color:rgb(240,240,240);border:none;} .mdCell {padding:0.3em;border:none;} .mdHeader {padding:0.3em;font-weight:bold;border:none;}</style>';
metadataText += '<div style="margin:1em;"><h1 style="margin-bottom:0.8em;">'+metadataSectionTitleString[lang]+'"'+layertitle+'"</h1>';
//abstract
if (wmsLoader.layerProperties[layername].abstract) {
metadataText += '<p><b>'+abstractString[lang]+'</b><p><p>'+wmsLoader.layerProperties[layername].abstract+'</p>';
}
//is layer queryable
metadataText += '<p style="margin-top:1em;">'+layerQueryable[lang];
if (wmsLoader.layerProperties[layername].queryable) {
metadataText += yesString[lang];
}
else {
metadataText += noString[lang];
}
metadataText += '</p>';
//display field
if (wmsLoader.layerProperties[layername].queryable) {
// wmsLoader.layerProperties[layername].displayField is null if GetCapabilities is used
if (wmsLoader.layerProperties[layername].displayField) {
metadataText += '<p style="margin-top:1em;"><b>'+displayFieldString[lang]+":</b> "+wmsLoader.layerProperties[layername].displayField + '</p>';
}
}
//coordinate systems
metadataText += '<p style="margin-top:1em;margin-bottom:0.4em;font-weight:bold;">'+coordinateSystemsString[lang]+"</p><ul>";
for (srs in wmsLoader.layerProperties[layername].srsList) {
metadataText += '<li style="list-style-type:square;list-style-position:inside;">'+srs+'</li>';
}
metadataText += '</ul>';
//geographic extent
metadataText += '<p style="margin-top:1em;margin-bottom:0.4em;font-weight:bold;">'+geographicExtentString[lang]+"</p><ul>";
metadataText += '<table style="margin-top:0.5em;border:none;border-collapse:collapse;"><tr class="even"><th class="mdHeader">'+westString[lang]+'</th><th class="mdHeader">'+southString[lang]+'</th><th class="mdHeader">'+eastString[lang]+'</th><th class="mdHeader">'+northString[lang]+'</th></tr>';
metadataText += '<tr><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[0]+'</td><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[1]+'</td><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[2]+'</td><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[3]+'</td></tr>';
metadataText += '</table>'
//attributes/fields
if (wmsLoader.layerProperties[layername].attributes) {
metadataText += '<p style="margin-top:1em"><b>'+attributesString [lang]+'</b></p><table style="margin-top:0.5em;border:none;border-collapse:collapse;"><tr class="even"><th class="mdHeader">'+attributeNameString[lang]+'</th><th class="mdHeader">'+attributeTypeString[lang]+'</th><th class="mdHeader">'+attributeCommentString[lang]+'</th><th class="mdHeader">'+attributeLengthString[lang]+'</th><th class="mdHeader">'+attributePrecisionString[lang]+'</th></tr>';
var rowCounter = 1;
for (var i=0;i<wmsLoader.layerProperties[layername].attributes.length;i++) {
attribute = wmsLoader.layerProperties[layername].attributes[i];
if (rowCounter % 2 == 0) {
metadataText += '<tr class="even">';
}
else {
metadataText += '<tr>';
}
metadataText += '<td class="mdCell">'+attribute.name+'</td><td class="mdCell">'+attribute.type+'</td><td class="mdCell">'+attribute.comment+'</td><td class="mdCell">'+attribute.length+'</td><td class="mdCell">'+attribute.precision+'</td></tr>';
rowCounter++;
}
metadataText += '</table>'
}
metadataText += '</div>'
metadataTab.update(metadataText);
// Set loading... text
legendTab.update(legendTabLoadingString[lang]);
//create legend image
legendMetaTabPanel.activate(legendTab);
// Build the legend with an Ajax call
Ext.Ajax.request({
url: legendUrl,
params: '',
method: 'GET',
success: function (response) {
var legendText = '';
var t = new Ext.Template('<tr><td><img src="data:image/png;base64,{image}" /></td><td>{name}</td></tr>');
Ext.each(Ext.decode(response.responseText), function(k){
legendText += t.apply(k);
});
legendTab.update('<table>' + legendText + '</table>');
}
});
}
//scripts to display legend graphic and per layer metadata in a separate Ext window
function showLegendAndMetadata(layertitle) {
var layername = wmsLoader.layerTitleNameMapping[layertitle];
//initialize Ext Window if undefined
if (legendMetadataWindow == undefined) {
setupLegendAndMetadataWindow();
}
legendMetadataWindow.setTitle(legendMetadataWindowTitleString[lang] + " '"+layertitle+"'");
if (legendMetadataWindow_active == false) {
legendMetadataWindow.show();
}
//create legend URI
var legendUrl = wmsURI + Ext.urlEncode({
SERVICE: "WMS",
VERSION: "1.3.0",
REQUEST: "GetLegendGraphics",
FORMAT: "image/png",
EXCEPTIONS: "application/vnd.ogc.se_inimage",
BOXSPACE: 1,
LAYERSPACE: 2,
SYMBOLSPACE: 1,
SYMBOLHEIGHT: 2,
LAYERFONTSIZE: 8,
ITEMFONTSIZE: 8,
LAYERS: layername,
DPI: screenDpi
});
legendMetaTabPanel = Ext.getCmp('legendMetaTabPanel');
//create metadata text
legendMetaTabPanel.activate(metadataTab);
var metadataText = '<style type="text/css">.even { background-color:rgb(240,240,240);border:none;} .mdCell {padding:0.3em;border:none;} .mdHeader {padding:0.3em;font-weight:bold;border:none;}</style>';
metadataText += '<div style="margin:1em;"><h1 style="margin-bottom:0.8em;">'+metadataSectionTitleString[lang]+'"'+layertitle+'"</h1>';
//abstract
if (wmsLoader.layerProperties[layername].abstract) {
metadataText += '<p><b>'+abstractString[lang]+'</b><p><p>'+wmsLoader.layerProperties[layername].abstract+'</p>';
}
//is layer queryable
metadataText += '<p style="margin-top:1em;">'+layerQueryable[lang];
if (wmsLoader.layerProperties[layername].queryable) {
metadataText += yesString[lang];
}
else {
metadataText += noString[lang];
}
metadataText += '</p>';
//display field
if (wmsLoader.layerProperties[layername].queryable) {
// wmsLoader.layerProperties[layername].displayField is null if GetCapabilities is used
if (wmsLoader.layerProperties[layername].displayField) {
metadataText += '<p style="margin-top:1em;"><b>'+displayFieldString[lang]+":</b> "+wmsLoader.layerProperties[layername].displayField + '</p>';
}
}
//coordinate systems
metadataText += '<p style="margin-top:1em;margin-bottom:0.4em;font-weight:bold;">'+coordinateSystemsString[lang]+"</p><ul>";
for (srs in wmsLoader.layerProperties[layername].srsList) {
metadataText += '<li style="list-style-type:square;list-style-position:inside;">'+srs+'</li>';
}
metadataText += '</ul>';
//geographic extent
metadataText += '<p style="margin-top:1em;margin-bottom:0.4em;font-weight:bold;">'+geographicExtentString[lang]+"</p><ul>";
metadataText += '<table style="margin-top:0.5em;border:none;border-collapse:collapse;"><tr class="even"><th class="mdHeader">'+westString[lang]+'</th><th class="mdHeader">'+southString[lang]+'</th><th class="mdHeader">'+eastString[lang]+'</th><th class="mdHeader">'+northString[lang]+'</th></tr>';
metadataText += '<tr><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[0]+'</td><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[1]+'</td><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[2]+'</td><td class="mdCell">'+wmsLoader.layerProperties[layername].bbox[3]+'</td></tr>';
metadataText += '</table>'
//attributes/fields
if (wmsLoader.layerProperties[layername].attributes) {
metadataText += '<p style="margin-top:1em"><b>'+attributesString [lang]+'</b></p><table style="margin-top:0.5em;border:none;border-collapse:collapse;"><tr class="even"><th class="mdHeader">'+attributeNameString[lang]+'</th><th class="mdHeader">'+attributeTypeString[lang]+'</th><th class="mdHeader">'+attributeCommentString[lang]+'</th><th class="mdHeader">'+attributeLengthString[lang]+'</th><th class="mdHeader">'+attributePrecisionString[lang]+'</th></tr>';
var rowCounter = 1;
for (var i=0;i<wmsLoader.layerProperties[layername].attributes.length;i++) {
attribute = wmsLoader.layerProperties[layername].attributes[i];
if (rowCounter % 2 == 0) {
metadataText += '<tr class="even">';
}
else {
metadataText += '<tr>';
}
metadataText += '<td class="mdCell">'+attribute.name+'</td><td class="mdCell">'+attribute.type+'</td><td class="mdCell">'+attribute.comment+'</td><td class="mdCell">'+attribute.length+'</td><td class="mdCell">'+attribute.precision+'</td></tr>';
rowCounter++;
}
metadataText += '</table>'
}
metadataText += '</div>'
metadataTab.update(metadataText);
//create legend image
legendMetaTabPanel.activate(legendTab);
var legendImage = '<img src="'+legendUrl+'" />';
legendTab.update(legendImage);
}
function setupLegendAndMetadataWindow() {
legendMetadataWindow = new Ext.Window({
title: legendMetadataWindowTitleString[lang],
width: geoExtMap.getWidth() * 0.5,
height: geoExtMap.getHeight() * 0.5,
autoScroll: true,
maximizable: true,
layout: 'fit',
items: [{
xtype: 'tabpanel',
activeTab: 0,
defaults: {autoScroll: true},
id: 'legendMetaTabPanel',
items: [{
title: legendTabTitleString[lang],
id: 'legendTab'
},{
title: metadataTabTitleString[lang],
id: 'metadataTab'
}]
}],
listeners: {
show:function() {
legendMetadataWindow_active = true;
},
hide:function() {
legendMetadataWindow_active = false;
},
close: function() {
legendMetadataWindow = undefined;
}
}
});
legendMetaTabPanel = Ext.getCmp('legendMetaTabPanel');
legendTab = Ext.getCmp('legendTab');
metadataTab = Ext.getCmp('metadataTab');
}