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/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* @fileoverview functions used in GIS data editor
*
* @requires jQuery
*
*/
var gisEditorLoaded = false;
/**
* Closes the GIS data editor and perform necessary clean up work.
*/
function closeGISEditor() {
$("#popup_background").fadeOut("fast");
$("#gis_editor").fadeOut("fast", function () {
$(this).empty();
});
}
/**
* Prepares the HTML recieved via AJAX.
*/
function prepareJSVersion() {
// Change the text on the submit button
$("#gis_editor input[name='gis_data[save]']")
.val(PMA_messages.strCopy)
.insertAfter($('#gis_data_textarea'))
.before('<br/><br/>');
// Add close and cancel links
$('#gis_data_editor').prepend('<a class="close_gis_editor" href="#">' + PMA_messages.strClose + '</a>');
$('<a class="cancel_gis_editor" href="#"> ' + PMA_messages.strCancel + '</a>')
.insertAfter($("input[name='gis_data[save]']"));
// Remove the unnecessary text
$('div#gis_data_output p').remove();
// Remove 'add' buttons and add links
$('#gis_editor input.add').each(function (e) {
var $button = $(this);
$button.addClass('addJs').removeClass('add');
var classes = $button.attr('class');
$button.replaceWith(
'<a class="' + classes +
'" name="' + $button.attr('name') +
'" href="#">+ ' + $button.val() + '</a>'
);
});
}
/**
* Returns the HTML for a data point.
*
* @param pointNumber point number
* @param prefix prefix of the name
* @returns the HTML for a data point
*/
function addDataPoint(pointNumber, prefix) {
return '<br/>' +
$.sprintf(PMA_messages.strPointN, (pointNumber + 1)) + ': ' +
'<label for="x">' + PMA_messages.strX + '</label>' +
'<input type="text" name="' + prefix + '[' + pointNumber + '][x]" value=""/>' +
'<label for="y">' + PMA_messages.strY + '</label>' +
'<input type="text" name="' + prefix + '[' + pointNumber + '][y]" value=""/>';
}
/**
* Initialize the visualization in the GIS data editor.
*/
function initGISEditorVisualization() {
// Loads either SVG or OSM visualization based on the choice
selectVisualization();
// Adds necessary styles to the div that coontains the openStreetMap
styleOSM();
// Loads the SVG element and make a reference to it
loadSVG();
// Adds controllers for zooming and panning
addZoomPanControllers();
zoomAndPan();
}
/**
* Loads JavaScript files and the GIS editor.
*
* @param value current value of the geometry field
* @param field field name
* @param type geometry type
* @param input_name name of the input field
* @param token token
*/
function loadJSAndGISEditor(value, field, type, input_name, token) {
var head = document.getElementsByTagName('head')[0];
var script;
// Loads a set of small JS file needed for the GIS editor
var smallScripts = [ 'js/jquery/jquery.svg.js',
'js/jquery/jquery.mousewheel.js',
'js/jquery/jquery.event.drag-2.2.js',
'js/tbl_gis_visualization.js' ];
for (var i = 0; i < smallScripts.length; i++) {
script = document.createElement('script');
script.type = 'text/javascript';
script.src = smallScripts[i];
head.appendChild(script);
}
// OpenLayers.js is BIG and takes time. So asynchronous loading would not work.
// Load the JS and do a callback to load the content for the GIS Editor.
script = document.createElement('script');
script.type = 'text/javascript';
script.onreadystatechange = function () {
if (this.readyState == 'complete') {
loadGISEditor(value, field, type, input_name, token);
}
};
script.onload = function () {
loadGISEditor(value, field, type, input_name, token);
};
script.src = 'js/openlayers/OpenLayers.js';
head.appendChild(script);
gisEditorLoaded = true;
}
/**
* Loads the GIS editor via AJAX
*
* @param value current value of the geometry field
* @param field field name
* @param type geometry type
* @param input_name name of the input field
* @param token token
*/
function loadGISEditor(value, field, type, input_name, token) {
var $gis_editor = $("#gis_editor");
$.post('gis_data_editor.php', {
'field' : field,
'value' : value,
'type' : type,
'input_name' : input_name,
'get_gis_editor' : true,
'token' : token,
'ajax_request': true
}, function (data) {
if (data.success === true) {
$gis_editor.html(data.gis_editor);
initGISEditorVisualization();
prepareJSVersion();
} else {
PMA_ajaxShowMessage(data.error, false);
}
}, 'json');
}
/**
* Opens up the dialog for the GIS data editor.
*/
function openGISEditor() {
// Center the popup
var windowWidth = document.documentElement.clientWidth;
var windowHeight = document.documentElement.clientHeight;
var popupWidth = windowWidth * 0.9;
var popupHeight = windowHeight * 0.9;
var popupOffsetTop = windowHeight / 2 - popupHeight / 2;
var popupOffsetLeft = windowWidth / 2 - popupWidth / 2;
var $gis_editor = $("#gis_editor");
var $backgrouond = $("#popup_background");
$gis_editor.css({"top": popupOffsetTop, "left": popupOffsetLeft, "width": popupWidth, "height": popupHeight});
$backgrouond.css({"opacity" : "0.7"});
$gis_editor.append(
'<div id="gis_data_editor">' +
'<img class="ajaxIcon" id="loadingMonitorIcon" src="' +
pmaThemeImage + 'ajax_clock_small.gif" alt=""/>' +
'</div>'
);
// Make it appear
$backgrouond.fadeIn("fast");
$gis_editor.fadeIn("fast");
}
/**
* Prepare and insert the GIS data in Well Known Text format
* to the input field.
*/
function insertDataAndClose() {
var $form = $('form#gis_data_editor_form');
var input_name = $form.find("input[name='input_name']").val();
$.post('gis_data_editor.php', $form.serialize() + "&generate=true&ajax_request=true", function (data) {
if (data.success === true) {
$("input[name='" + input_name + "']").val(data.result);
} else {
PMA_ajaxShowMessage(data.error, false);
}
}, 'json');
closeGISEditor();
}
/**
* Unbind all event handlers before tearing down a page
*/
AJAX.registerTeardown('gis_data_editor.js', function () {
$("#gis_editor input[name='gis_data[save]']").die('click');
$('#gis_editor').die('submit');
$('#gis_editor').find("input[type='text']").die('change');
$("#gis_editor select.gis_type").die('change');
$('#gis_editor a.close_gis_editor, #gis_editor a.cancel_gis_editor').die('click');
$('#gis_editor a.addJs.addPoint').die('click');
$('#gis_editor a.addLine.addJs').die('click');
$('#gis_editor a.addJs.addPolygon').die('click');
$('#gis_editor a.addJs.addGeom').die('click');
});
AJAX.registerOnload('gis_data_editor.js', function () {
// Remove the class that is added due to the URL being too long.
$('span.open_gis_editor a').removeClass('formLinkSubmit');
/**
* Prepares and insert the GIS data to the input field on clicking 'copy'.
*/
$("#gis_editor input[name='gis_data[save]']").live('click', function (event) {
event.preventDefault();
insertDataAndClose();
});
/**
* Prepares and insert the GIS data to the input field on pressing 'enter'.
*/
$('#gis_editor').live('submit', function (event) {
event.preventDefault();
insertDataAndClose();
});
/**
* Trigger asynchronous calls on data change and update the output.
*/
$('#gis_editor').find("input[type='text']").live('change', function () {
var $form = $('form#gis_data_editor_form');
$.post('gis_data_editor.php', $form.serialize() + "&generate=true&ajax_request=true", function (data) {
if (data.success === true) {
$('#gis_data_textarea').val(data.result);
$('#placeholder').empty().removeClass('hasSVG').html(data.visualization);
$('#openlayersmap').empty();
/* TODO: the gis_data_editor should rather return JSON than JS code to eval */
eval(data.openLayers);
initGISEditorVisualization();
} else {
PMA_ajaxShowMessage(data.error, false);
}
}, 'json');
});
/**
* Update the form on change of the GIS type.
*/
$("#gis_editor select.gis_type").live('change', function (event) {
var $gis_editor = $("#gis_editor");
var $form = $('form#gis_data_editor_form');
$.post('gis_data_editor.php', $form.serialize() + "&get_gis_editor=true&ajax_request=true", function (data) {
if (data.success === true) {
$gis_editor.html(data.gis_editor);
initGISEditorVisualization();
prepareJSVersion();
} else {
PMA_ajaxShowMessage(data.error, false);
}
}, 'json');
});
/**
* Handles closing of the GIS data editor.
*/
$('#gis_editor a.close_gis_editor, #gis_editor a.cancel_gis_editor').live('click', function () {
closeGISEditor();
});
/**
* Handles adding data points
*/
$('#gis_editor a.addJs.addPoint').live('click', function () {
var $a = $(this);
var name = $a.attr('name');
// Eg. name = gis_data[0][MULTIPOINT][add_point] => prefix = gis_data[0][MULTIPOINT]
var prefix = name.substr(0, name.length - 11);
// Find the number of points
var $noOfPointsInput = $("input[name='" + prefix + "[no_of_points]" + "']");
var noOfPoints = parseInt($noOfPointsInput.val(), 10);
// Add the new data point
var html = addDataPoint(noOfPoints, prefix);
$a.before(html);
$noOfPointsInput.val(noOfPoints + 1);
});
/**
* Handles adding linestrings and inner rings
*/
$('#gis_editor a.addLine.addJs').live('click', function () {
var $a = $(this);
var name = $a.attr('name');
// Eg. name = gis_data[0][MULTILINESTRING][add_line] => prefix = gis_data[0][MULTILINESTRING]
var prefix = name.substr(0, name.length - 10);
var type = prefix.slice(prefix.lastIndexOf('[') + 1, prefix.lastIndexOf(']'));
// Find the number of lines
var $noOfLinesInput = $("input[name='" + prefix + "[no_of_lines]" + "']");
var noOfLines = parseInt($noOfLinesInput.val(), 10);
// Add the new linesting of inner ring based on the type
var html = '<br/>';
var noOfPoints;
if (type == 'MULTILINESTRING') {
html += PMA_messages.strLineString + ' ' + (noOfLines + 1) + ':';
noOfPoints = 2;
} else {
html += PMA_messages.strInnerRing + ' ' + noOfLines + ':';
noOfPoints = 4;
}
html += '<input type="hidden" name="' + prefix + '[' + noOfLines + '][no_of_points]" value="' + noOfPoints + '"/>';
for (var i = 0; i < noOfPoints; i++) {
html += addDataPoint(i, (prefix + '[' + noOfLines + ']'));
}
html += '<a class="addPoint addJs" name="' + prefix + '[' + noOfLines + '][add_point]" href="#">+ ' +
PMA_messages.strAddPoint + '</a><br/>';
$a.before(html);
$noOfLinesInput.val(noOfLines + 1);
});
/**
* Handles adding polygons
*/
$('#gis_editor a.addJs.addPolygon').live('click', function () {
var $a = $(this);
var name = $a.attr('name');
// Eg. name = gis_data[0][MULTIPOLYGON][add_polygon] => prefix = gis_data[0][MULTIPOLYGON]
var prefix = name.substr(0, name.length - 13);
// Find the number of polygons
var $noOfPolygonsInput = $("input[name='" + prefix + "[no_of_polygons]" + "']");
var noOfPolygons = parseInt($noOfPolygonsInput.val(), 10);
// Add the new polygon
var html = PMA_messages.strPolygon + ' ' + (noOfPolygons + 1) + ':<br/>';
html += '<input type="hidden" name="' + prefix + '[' + noOfPolygons + '][no_of_lines]" value="1"/>' +
'<br/>' + PMA_messages.strOuterRing + ':' +
'<input type="hidden" name="' + prefix + '[' + noOfPolygons + '][0][no_of_points]" value="4"/>';
for (var i = 0; i < 4; i++) {
html += addDataPoint(i, (prefix + '[' + noOfPolygons + '][0]'));
}
html += '<a class="addPoint addJs" name="' + prefix + '[' + noOfPolygons + '][0][add_point]" href="#">+ ' +
PMA_messages.strAddPoint + '</a><br/>' +
'<a class="addLine addJs" name="' + prefix + '[' + noOfPolygons + '][add_line]" href="#">+ ' +
PMA_messages.strAddInnerRing + '</a><br/><br/>';
$a.before(html);
$noOfPolygonsInput.val(noOfPolygons + 1);
});
/**
* Handles adding geoms
*/
$('#gis_editor a.addJs.addGeom').live('click', function () {
var $a = $(this);
var prefix = 'gis_data[GEOMETRYCOLLECTION]';
// Find the number of geoms
var $noOfGeomsInput = $("input[name='" + prefix + "[geom_count]" + "']");
var noOfGeoms = parseInt($noOfGeomsInput.val(), 10);
var html1 = PMA_messages.strGeometry + ' ' + (noOfGeoms + 1) + ':<br/>';
var $geomType = $("select[name='gis_data[" + (noOfGeoms - 1) + "][gis_type]']").clone();
$geomType.attr('name', 'gis_data[' + noOfGeoms + '][gis_type]').val('POINT');
var html2 = '<br/>' + PMA_messages.strPoint + ' :' +
'<label for="x"> ' + PMA_messages.strX + ' </label>' +
'<input type="text" name="gis_data[' + noOfGeoms + '][POINT][x]" value=""/>' +
'<label for="y"> ' + PMA_messages.strY + ' </label>' +
'<input type="text" name="gis_data[' + noOfGeoms + '][POINT][y]" value=""/>' +
'<br/><br/>';
$a.before(html1);
$geomType.insertBefore($a);
$a.before(html2);
$noOfGeomsInput.val(noOfGeoms + 1);
});
});
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