\n';
textarea.value = ark_text;
}
}
/* 'cover_page' component validation */
function checkCoverPageValid() {
var valid = true;
var ark_loader = $('ark_loader');
if ( ark_loader ) {
var ark_text = $('ark_loader_text').value;
var obs_hnames = GPW.getObsHashNamesInSequence();
if ( trim(ark_text) != '' && obs_hnames.length == 0 ) {
valid = false;
$('ark_loader_text').addClassName('invalid');
showErrMsg($('ark_loader_text_msg'),
"detected text in the ARK Save File Loader, click 'Load File'");
if ( ! $('ark_loader').visible() ) {
$('ark_loader').show();
}
} else {
$('ark_loader_text').removeClassName('invalid');
hideErrMsg($('ark_loader_text_msg'));
}
}
return valid;
}
/* 'observations_and_targets' component validation */
function checkObservationsAndTargetsNamesValid() {
var valid = true;
var elem = $('observations_and_targets');
if ( elem ) {
var id, elem, name, errmsg = new Array();
var all_names = {}; /* hash of names, initially empty */
var obs_nums = getObservationNums();
/* save each observation name in hash, use hash to detect duplicates */
for ( var i = 0, l = obs_nums.length; i < l; ++i ) {
id = 'obs'+obs_nums[i]+'_name';
elem = $(id);
name = elem.value;
hname = GPW.getObsHashName(name);
/* check that name is valid */
if ( ! is_observation_name_valid_gpw(name, errmsg) ) {
valid = false;
elem.addClassName('invalid');
showErrMsg($(id+'_msg'), errmsg.pop());
/* check whether name has already appeared */
} else if ( all_names[hname] ) {
valid = false;
elem.addClassName('invalid');
showErrMsg($(id+'_msg'), 'duplicate observation names prohibited');
/* name is valid and unique */
} else {
all_names[hname] = hname; /* save name in hash */
elem.removeClassName('invalid');
showStatusMsg($(id+'_msg'));
}
}
if ( ! valid ) {
showErrMsg($('obs_scitarg_msg'), 'some of your entries are invalid');
}
}
return valid;
}
/* exposure time calculator component validation */
function checkEtcValid() {
/* array of validation functions for form
components that are not part of the form will return true */
var valid_funcs = [
{ id: 'coordinates', func: checkCoordinatesValid },
{ id: 'etc_method', func: checkEtcMethodValid },
{ id: 'astro_object_properties', func: checkAstroObjectPropertiesValid },
{ id: 'flux_method', func: checkFluxMethodValid },
{ id: 'area_extinction', func: checkAreaExtinctionValid },
{ id: 'observation_information', func: checkObservationInformationValid }
];
/* validate each component of the form */
var num_valid = 0;
for ( var i = 0, l = valid_funcs.length; i < l; ++i ) {
if ( valid_funcs[i].func() ) {
++num_valid;
} else {
/* if there was a failure, make it visible to the user */
if ( ! $(valid_funcs[i].id).visible() ) {
$(valid_funcs[i].id).show();
}
}
}
/* display message when failures detected */
if ( num_valid != valid_funcs.length ) {
showErrMsg($('etc_product_msg'), 'some of your parameters are invalid');
} else {
showStatusMsg($('etc_product_msg'));
}
return num_valid == valid_funcs.length;
}
/* deactivate a numbered step in the process */
function deactivateStep(num) {
var elem;
/* hide the elements for this step */
elem = $('gpw_step'+num);
if ( elem ) {
elem.hide();
}
/* set the process to inactive in the user display */
elem = $('gpw_process'+num);
if ( elem ) {
elem.removeClassName('activestep');
}
}
/* activate a numbered step in the process */
function activateStep(num) {
var elem;
/* show the elements for this step */
elem = $('gpw_step'+num);
if ( elem ) {
elem.show();
}
/* set the process to active in the user display */
elem = $('gpw_process'+num);
if ( elem ) {
elem.addClassName('activestep');
}
}
/* go backwords or forwards from current step */
function onClickStep(event) {
var elem = Event.element(event);
if ( elem ) {
var prefix = 'gpw_step';
var curr = parseInt( elem.id.substring(prefix.length) );
/* go to next step */
if ( elem.id.indexOf('_next') != -1 ) {
var next = curr+1;
/* check whether we satisfy transition criteria from step */
if ( GPW.invoke_transition(curr, next) ) {
deactivateStep(curr);
activateStep(next);
}
/* go to previous step */
} else if ( elem.id.indexOf('_previous') != -1 ) {
var prev = curr-1;
/* check whether we satisfy transition criteria from step */
if ( GPW.invoke_transition(curr, prev) ) {
deactivateStep(curr);
activateStep(prev);
}
}
}
}
/* start the analysis product requests */
function onClickAnalysisStart(event) {
/* set analysis state flag */
GPW.is_analysis_started = true;
/* disable the start button, enable the stop button */
$('gpw_analysis_start').addClassName('btn_disabled');
$('gpw_analysis_stop').removeClassName('btn_disabled');
/* initiate the requests at the front of the queue */
var num_simultaneous_req = 2;
for ( var i = 0; i < num_simultaneous_req; ++i ) {
GPW.doRequest(GPW.pending_req_obj.shift());
}
}
/* stop the analysis product requests */
function onClickAnalysisStop(event) {
/* prevent new requests from being initiated when loading complete */
GPW.is_analysis_started = false;
/* set ignore flag, dequeue all loading requests, and remove from loading */
for ( var i = 0, l = GPW.loading_req_obj.length; i < l; ++i ) {
GPW.loading_req_obj[i].ignore_complete = true;
GPW.setDeQueued(GPW.loading_req_obj[i].tbl_id);
}
GPW.loading_req_obj.splice(0, GPW.loading_req_obj.length);
/* disable the stop button, enable the start button */
$('gpw_analysis_stop').addClassName('btn_disabled');
$('gpw_analysis_start').removeClassName('btn_disabled');
}
/* toggle the gpw coordinate system type */
function onClickGPWCoordSysType(event) {
var elem = Event.element(event);
if ( elem ) {
if ( elem == $('gpw_eqj2000') || elem == $('gpw_eqb1950') ) {
$('gpw_lonlat').hide();
$('gpw_radec').show();
} else if ( elem == $('gpw_galactic') ) {
$('gpw_radec').hide();
$('gpw_lonlat').show();
}
/* change of coordinate system means all existing requests are invalid */
for ( var hname in GPW.obs_obj ) {
GPW.deleteAllObsRequests( GPW.obs_obj[hname] );
}
}
}
/* toggle the visibility of the bulk loader */
function onClickToggleArkLoader(event) {
var elem = $('ark_loader');
if ( elem ) {
if ( ! elem.visible() ) {
elem.show();
} else {
elem.hide();
}
}
}
/* copy the contents of the ark save file into the form */
function onClickPutArkLoader(event) {
var elem = $('cover_page');
if ( elem ) {
/* read the observations from the ark text into an array */
var cover_inp = new Array();
var errmsg = new Array();
var ark_text = $('ark_loader_text').value;
var ark_obs_arr = GPW.parseArkLoader(ark_text, cover_inp, errmsg);
if ( errmsg.length > 0 ) {
$('ark_loader_text').addClassName('invalid');
showErrMsg($('ark_loader_text_msg'), errmsg.pop().escapeHTML());
} else if ( cover_inp.length == 0 && ark_obs_arr.length == 0 ) {
$('ark_loader_text').addClassName('invalid');
showErrMsg($('ark_loader_text_msg'),
'no cover page information or observations to load');
} else {
/* reset all sequence numbers in case the user deleted observations */
for ( var hname in GPW.obs_obj ) {
GPW.obs_obj[hname].num = null;
}
/* merge the ark observations into the obs hash */
for ( var i = 0, l = ark_obs_arr.length; i < l; ++i ) {
var ark_obs = ark_obs_arr[i];
/* delete any empty science targets */
for ( var j = 0 ; j < ark_obs.scitarg.length; ) {
/* if ( isNaN(ark_obs.scitarg[j].ra) || isNaN(ark_obs.scitarg[j].dec) ){ */
if ( ark_obs.scitarg[j].ra==undefined || ark_obs.scitarg[j].dec==undefined ) {
ark_obs.scitarg.splice(j, 1);
} else {
++j;
}
}
ark_obs.num = i+1;
/* this will either replace an existing observation of the same name
or insert the ark observation as a new observation */
GPW.obs_obj[ ark_obs.hname ] = ark_obs;
}
/* replace the cover page lines */
GPW.ark_cover_inp = cover_inp;
$('ark_loader_text').removeClassName('invalid');
showStatusMsg($('ark_loader_text_msg'), 'ARK Save File loaded');
}
}
}
/* add a new exposure time calculator request */
function onClickAddEtcRequest(event) {
/* check that parameters are valid */
if ( checkEtcValid() ) {
/* build a dummy observation */
var obs = new GPW.Obs(); /* build a dummy observation */
var cs_type = getValueOfFirstCheckedRadio(
$('eqj2000', 'eqb1950', 'galactic')
);
if ( cs_type == 'eqj2000' || cs_type == 'eqb1950' ) {
obs.ra = $('ra').value;
obs.dec = $('dec').value;
} else if ( cs_type == 'galactic' ) {
obs.ra = $('lon').value;
obs.dec = $('lat').value;
}
var param = 'RA='+obs.ra+' DEC='+obs.dec;
var inp_type = getValueOfFirstCheckedRadio( $('exp', 'snr') );
if ( inp_type == 'exp' ) {
param += ' EXP='+$('exp_time').value;
} else if ( inp_type == 'snr' ) {
param += ' SNR='+$('snr_val').value;
}
/* append an new entry to the table, used for the next request */
var old_id = GPW.appendEtcProductTableRow();
if ( old_id != null ) {
/* populate some cells in row */
$(old_id+'_param').innerHTML = param;
$(old_id).style.visibility = 'visible';
/* build a request */
var tool = GPW.tools[ GPW.indexOfTool('etc') ];
var req = new GPW.Request(obs, tool);
req.obs_hname = old_id;
req.tbl_id = old_id+'_status';
GPW.doRequest(req);
}
}
}
/* remove an existing exposure time calculator request */
function onClickRemoveEtcRequest(src) {
var row = getParentElementByTagName(src, 'tr');
if ( row != null ) {
/* build an id matching the row number */
var prefix = 'etc_product';
var num = parseInt( row.id.substring(prefix.length, row.id.length) );
var etc_id = prefix+num;
/* search for matching ids in array of request objects and delete */
for ( var i = 0; i < GPW.etc_req_obj.length; ) {
if ( GPW.etc_req_obj[i].obs_hname == etc_id ) {
GPW.etc_req_obj.splice(i, 1);
} else {
++i;
}
}
/* remove the row */
row.parentNode.removeChild(row);
}
}
/* toggle the display of exposure time calculator popup */
function onClickToggleEtcPopup(src) {
var popup = $('etc_popup');
if ( popup ) {
/* hide popup */
if ( popup.style.visibility == 'visible' ) {
popup.style.visibility = 'hidden';
/* create an array containing the list of checked observations */
var obs_checked = new Array();
var obs, obs_hnames = GPW.getObsHashNamesInSequence();
for ( var i = 0, l = obs_hnames.length; i < l; ++i ) {
obs = GPW.obs_obj[ obs_hnames[i] ];
if ( $('etc_cbx'+obs.num).checked == true ) {
obs_checked.push(obs.name);
}
$('etc_cbx'+obs.num).checked = false;
$('etc_cbx'+obs.num).disabled = false;
}
/* save checked observations as comma-separated list */
if ( $('etc_check_all').checked == true ) {
$('etc_product'+GPW.etc_popup_num+'_obs').value = '$ALL';
} else {
$('etc_product'+GPW.etc_popup_num+'_obs').value = obs_checked.join(',');
}
/* clear the checkboxes */
$('etc_check_all').checked = false;
$('etc_check_none').checked = false;
/* show popup */
} else {
var row = getParentElementByTagName(src, 'tr');
/* set the product number associated with the popup */
var prefix = 'etc_product';
var num = parseInt( row.id.substring(prefix.length, row.id.length) );
GPW.etc_popup_num = num;
/* initialize checkboxes based on value of comma-separated list */
var checked = $('etc_product'+GPW.etc_popup_num+'_obs').value.split(',');
var obs_hnames = GPW.getObsHashNamesInSequence();
/* check for special string used to indicate all are checked */
if ( checked.length == 1 && checked[0] == '$ALL' ) {
for ( var i = 0, l = obs_hnames.length; i < l; ++i ) {
$('etc_cbx'+GPW.obs_obj[ obs_hnames[i] ].num).checked = true;
$('etc_cbx'+GPW.obs_obj[ obs_hnames[i] ].num).disabled = true;
}
$('etc_check_all').checked = true;
} else {
for ( var i = 0, l = obs_hnames.length; i < l; ++i ) {
obs = GPW.obs_obj[ obs_hnames[i] ];
/* search for name in the array of checked observations */
if ( checked.include(obs_hnames[i]) ) {
$('etc_cbx'+GPW.obs_obj[ obs_hnames[i] ].num).checked = true;
}
}
}
/* center popup on table horizontally and current row vertically */
var pos = row.cumulativeOffset();
var dx = $('etc_product_table').getWidth()/2 - popup.getWidth()/2;
var dy = pos[1] - popup.getHeight()/2;
/* set popup absolute position */
popup.style.left = dx+'px';
popup.style.top = dy+'px';
popup.style.visibility = 'visible';
}
}
}
/* check all observations in the exposure time calculator popup */
function onClickEtcCheckAll(event) {
/* when the user unclicks 'check all' it is the same as 'check none' */
if ( $('etc_check_all').checked == false ) {
onClickEtcCheckNone(event);
} else {
$('etc_check_none').checked = false;
/* check all observations and set disabled */
var obs_hnames = GPW.getObsHashNamesInSequence();
for ( var i = 0, l = obs_hnames.length; i < l; ++i ) {
$('etc_cbx'+GPW.obs_obj[ obs_hnames[i] ].num).checked = true;
$('etc_cbx'+GPW.obs_obj[ obs_hnames[i] ].num).disabled = true;
}
}
}
/* uncheck all observations in the exposure time calculator popup */
function onClickEtcCheckNone(event) {
$('etc_check_all').checked = false;
/* uncheck all observations and set enabled */
var obs_hnames = GPW.getObsHashNamesInSequence();
for ( var i = 0, l = obs_hnames.length; i < l; ++i ) {
$('etc_cbx'+GPW.obs_obj[ obs_hnames[i] ].num).checked = false;
$('etc_cbx'+GPW.obs_obj[ obs_hnames[i] ].num).disabled = false;
}
}
/* add all observations to the queue */
function onClickQueueAll(event) {
var table = $('gpw_product_table');
if ( table ) {
/* add observations without an existing completed request and
not currently in the request queue to the request queue */
GPW.queueProductTable(true, true);
}
}
/* remove all observations from the queue */
function onClickQueueNone(event) {
var table = $('gpw_product_table');
if ( table ) {
/* remove all pending requests from the request queue */
GPW.pending_req_obj.splice(0, GPW.pending_req_obj.length);
GPW.queueProductTable(false, false);
}
}
/* toggle the queue status for a single observation in a cell */
function onClickToggleQueueCell(src) {
var cell = $(src); /* get prototype-extended element */
if ( cell ) {
if ( cell.hasClassName('queued') ) {
/* extract observation name */
var last_tok_ind = cell.id.lastIndexOf('_');
var name_id = cell.id.substring(0, last_tok_ind) + '_name';
var obs_name = $(name_id).innerHTML;
var obs_hname = GPW.getObsHashName(obs_name);
/* remove completed and pending requests from queue */
if ( GPW.obs_obj[obs_hname] ) {
GPW.deleteToolObsRequests(
GPW.obs_obj[obs_hname], cell.id.substring(last_tok_ind+1)
);
GPW.setDeQueued(cell.id);
}
} else if ( cell.hasClassName('dequeued') ) {
/* extract observation name */
var last_tok_ind = cell.id.lastIndexOf('_');
var name_id = cell.id.substring(0, last_tok_ind) + '_name';
var obs_name = $(name_id).innerHTML;
var obs_hname = GPW.getObsHashName(obs_name);
/* add new request to queue */
if ( GPW.obs_obj[obs_hname] ) {
var tool_ind = GPW.indexOfTool(cell.id.substring(last_tok_ind+1));
if ( tool_ind != -1 ) {
GPW.pending_req_obj.push(
new GPW.Request(GPW.obs_obj[obs_hname], GPW.tools[tool_ind])
);
GPW.setQueued(cell.id);
}
}
}
}
}
/* open the contents of the ark save file in a new window */
function onClickShowWinArkWriter(event) {
var textarea = $('ark_writer_text');
if ( textarea ) {
var win = window.open(
'', 'ark_writer_win', 'height=800,width=600,'+
'resizable=yes,scrollbars=yes,menubar=yes');
/* window will be null in cases where blocked by popup blocker */
if ( win != null ) {
var doc = win.document;
doc.open();
doc.write('',textarea.value.escapeHTML(),'
');
doc.close();
win.focus();
}
}
}
/* initialize event handlers after page has loaded */
function initGPW() {
/* set wizard navigation event handlers */
var elem;
for ( var i = 0, l = GPW.steps.length; i < l; ++i ) {
elem = $('img_step'+GPW.steps[i]+'_previous');
if ( elem ) {
Event.observe(elem, 'click', onClickStep);
}
elem = $('btn_step'+GPW.steps[i]+'_previous');
if ( elem ) {
Event.observe(elem, 'click', onClickStep);
}
elem = $('img_step'+GPW.steps[i]+'_next');
if ( elem ) {
Event.observe(elem, 'click', onClickStep);
}
elem = $('btn_step'+GPW.steps[i]+'_next');
if ( elem ) {
Event.observe(elem, 'click', onClickStep);
}
}
/* set 'cover_page' event handlers */
if ( $('ark_loader_show') ) {
Event.observe($('ark_loader_show'), 'click', onClickToggleArkLoader);
}
if ( $('ark_loader_put') ) {
Event.observe($('ark_loader_put'), 'click', onClickPutArkLoader);
}
/* set coordinate system type event handlers */
var cs_type = $('gpw_eqj2000', 'gpw_eqb1950', 'gpw_galactic');
setFormHandler(cs_type, 'click', onClickGPWCoordSysType);
/* set 'etc' event handlers */
if ( $('etc_add_request') ) {
Event.observe($('etc_add_request'), 'click', onClickAddEtcRequest);
}
/* set exposure time calculator popup handlers */
if ( $('etc_check_all') ) {
Event.observe($('etc_check_all'), 'click', onClickEtcCheckAll);
}
if ( $('etc_check_none') ) {
Event.observe($('etc_check_none'), 'click', onClickEtcCheckNone);
}
/* set analysis control event handlers */
if ( $('gpw_analysis_start') ) {
Event.observe($('gpw_analysis_start'), 'click', onClickAnalysisStart);
}
if ( $('gpw_analysis_stop') ) {
Event.observe($('gpw_analysis_stop'), 'click', onClickAnalysisStop);
}
/* set queue control event handlers */
if ( $('queue_all') ) {
Event.observe($('queue_all'), 'click', onClickQueueAll);
}
if ( $('queue_none') ) {
Event.observe($('queue_none'), 'click', onClickQueueNone);
}
/* set ark save file event handlers */
if ( $('ark_writer_show_win') ) {
Event.observe($('ark_writer_show_win'), 'click', onClickShowWinArkWriter);
}
if ( $('ark_writer_show_win2') ) {
Event.observe($('ark_writer_show_win2'), 'click', onClickShowWinArkWriter);
}
/* preload some images that are used with css effects */
var img1 = new Image();
img1.src = '../img/indicator_medium.gif';
}
Event.observe(window, "load", initGPW);