function ExpressionPreviewDialog(title, cellIndex, rowIndices, values, expression, onDone) {
this._cellIndex = cellIndex;
this._rowIndices = rowIndices;
this._values = values;
this._results = null;
this._expression = expression;
this._onDone = onDone;
this._timerID = null;
this._createDialog(title);
}
ExpressionPreviewDialog.prototype._createDialog = function(title) {
var self = this;
var frame = DialogSystem.createDialog();
frame.width("700px");
var header = $('
').addClass("dialog-header").text(title).appendTo(frame);
var body = $('
').addClass("dialog-body").appendTo(frame);
var footer = $('
').addClass("dialog-footer").appendTo(frame);
var html = $(
'' +
'
Expression:
' +
'
' +
'
'
).appendTo(body);
this._elmts = DOM.bind(html);
$(' ').html(" OK ").click(function() {
DialogSystem.dismissUntil(self._level - 1);
self._onDone(self._expression);
}).appendTo(footer);
$(' ').text("Cancel").click(function() {
DialogSystem.dismissUntil(self._level - 1);
}).appendTo(footer);
this._elmts.expressionInput
.width("400px")
.attr("value", this._expression)
.keyup(function(){
self._scheduleUpdate();
})
.focus();
this._level = DialogSystem.showDialog(frame);
$("#expression-preview-tabs").tabs();
$("#expression-preview-tabs-preview").css("display", "");
$("#expression-preview-tabs-help").css("display", "");
this._update();
this._renderHelpTab();
};
ExpressionPreviewDialog.prototype._renderHelpTab = function() {
var self = this;
$.getJSON(
"/command/get-expression-language-info",
null,
function(data) {
self._renderHelp(data);
},
"json"
);
};
ExpressionPreviewDialog.prototype._renderHelp = function(data) {
var elmt = this._elmts.helpTabBody.empty();
var renderEntry = function(table, name, entry) {
var tr0 = table.insertRow(table.rows.length);
var tr1 = table.insertRow(table.rows.length);
var tr2 = table.insertRow(table.rows.length);
$(tr0.insertCell(0)).text(name);
$(tr0.insertCell(1)).text("(" + entry.params + ")");
$(tr1.insertCell(0));
$(tr1.insertCell(1)).text("returns: " + entry.returns);
$(tr2.insertCell(0));
$(tr2.insertCell(1)).text(entry.description);
};
$(' ').text("Functions").appendTo(elmt);
var functionTable = $('').appendTo(elmt)[0];
$(' ').text("Controls").appendTo(elmt);
var controlTable = $('').appendTo(elmt)[0];
for (var n in data.functions) {
renderEntry(functionTable, n, data.functions[n]);
}
for (var n in data.controls) {
renderEntry(controlTable, n, data.controls[n]);
}
};
ExpressionPreviewDialog.prototype._scheduleUpdate = function() {
if (this._timerID != null) {
window.clearTimeout(this._timerID);
}
var self = this;
this._timerID = window.setTimeout(function() { self._update(); }, 300);
};
ExpressionPreviewDialog.prototype._update = function() {
var self = this;
var expression = this._expression = $.trim(this._elmts.expressionInput[0].value);
$.post(
"/command/preview-expression?" + $.param({ project: theProject.id, expression: expression, cellIndex: this._cellIndex }),
{
rowIndices: JSON.stringify(this._rowIndices)
},
function(data) {
if (data.code != "error") {
self._results = data.results;
} else {
self._results = null;
}
self._renderPreview(expression);
},
"json"
);
};
ExpressionPreviewDialog.prototype._renderPreview = function(expression) {
var container = this._elmts.previewContainer.empty();
var table = $('').appendTo(container)[0];
var tr = table.insertRow(0);
$(tr.insertCell(0)).addClass("expression-preview-heading").text("row");
$(tr.insertCell(1)).addClass("expression-preview-heading").text("value");
$(tr.insertCell(2)).addClass("expression-preview-heading").text(expression);
var renderValue = function(td, v) {
if (v !== null && v !== undefined) {
if ($.isArray(v)) {
td.html(JSON.stringify(v));
} else if (typeof v === "string" && v.length == 0) {
$('empty string ').addClass("expression-preview-empty").appendTo(td);
} else {
td.html(v.toString());
}
} else {
$('null ').addClass("expression-preview-empty").appendTo(td);
}
};
for (var i = 0; i < this._values.length; i++) {
var tr = table.insertRow(table.rows.length);
$(tr.insertCell(0)).attr("width", "1%").html((this._rowIndices[i] + 1) + ".");
renderValue($(tr.insertCell(1)), this._values[i]);
var tdValue = $(tr.insertCell(2));
if (this._results != null) {
var v = this._results[i];
renderValue(tdValue, v);
} else {
$('error ').addClass("expression-preview-empty").appendTo(tdValue);
}
}
};