Class: DataWidget

(abstract) parasql.widget.DataWidget

Copyright:
  • ParaSQL LLC 2013-2022. All rights reserved.
License:

Extends

Methods

addEventListener(type, listener)

Adds an event listener to this widget. This can also be done via the Events... option on the tool bar.
Parameters:
Name Type Description
type string A valid event type.
listener string A string containing either the name of a JavaScript function to call, an inline function to be called, or code that resolves to an object which implements a handleEvent(event) method.
Inherited From:
See:
Examples
// add an inline function as an event listener 
parasql.app.getWidgetById('ID1007').addEventListener('render','function (event) { event.target.getContentDiv().innerHTML = "Inline Hello World"; }');
// add a function call as an event listener
parasql.app.getWidgetById('ID1008').addEventListener('render','renderHelloWidget');
// add an object as an event listener; the object must implement handleEvent(event)
document.myClass = new MyClass();
parasql.app.getWidgetById('ID1009').addEventListener('render','document.myClass');

clearRecords()

Clears all rows in this.dataTable. If the transaction set is dirty the user is prompted to save before clearing.

clearRecordsDiscardChanges()

Clears all rows in this.dataTable. If the transaction set is dirty the changes are silently discarded.
Since:
  • v106

getActiveQuery() → {parasql.widget.util.Query}

Since:
  • v114
Returns:
Returns the currently active query object, or null if there is no active query.
Type
parasql.widget.util.Query

getDataTable() → {parasql.schema.DataTable}

Returns:
The DataTable containing the data for this object.
Type
parasql.schema.DataTable

getFirstValue(tableName, columnName) → (nullable) {parasql.schema.DataValue}

Parameters:
Name Type Description
tableName string
columnName string
Since:
  • v125
Returns:
Returns the value of the specified field in the first *visible* record, or null if there is no such record. The first visible record is determined by this object's cursor and may NOT be the first row in the underlying data table if this is a child DataWidget.
Type
parasql.schema.DataValue

getQueries() → {Array.<parasql.widget.util.Query>}

You can change the active query via the parasql.widget.DataWidget#setActiveQuery method.
Returns:
Returns the array of Query objects owned by this DataWidget.
Type
Array.<parasql.widget.util.Query>

getQueryById(queryId) → (nullable) {parasql.widget.util.Query}

Parameters:
Name Type Description
queryId string
Since:
  • v101
Returns:
Returns the Query object with the specified queryId, or null if no query with that ID exists.
Type
parasql.widget.util.Query

getQueryByName(queryName) → (nullable) {parasql.widget.util.Query}

Parameters:
Name Type Description
queryName string
Since:
  • v101
Returns:
Returns the Query object with the specified queryName, or null if no query with that name exists.
Type
parasql.widget.util.Query

getSelectedRowIndex() → {number}

Returns:
Returns the index of the currently selected row; if no row is selected returns -1. The first row is 0.
Type
number

getTransactionSet() → {parasql.schema.TransactionSet}

Since:
  • v64
Returns:
Type
parasql.schema.TransactionSet

getWidgetId() → (non-null) {string}

Inherited From:
Returns:
Returns an immutable string that uniquely identifies this widget.
Type
string

isDisabled() → {boolean}

Since:
  • v110
Inherited From:
Returns:
Type
boolean

printWidget()

Causes this widget to print itself.
Inherited From:

redisplay()

Redisplays this widget.
Inherited From:

refreshQuery()

Executes the currently active query. To change the active query call the parasql.widget.DataWidget#setActiveQuery method.

setActiveQuery(queryObject)

Sets the active query but does not run it. To run the active query call the parasql.widget.DataWidget#refreshQuery method.
Parameters:
Name Type Description
queryObject parasql.widget.util.Query A valid query object.
Since:
  • v88

setDisabled(flag)

WARNING: Subclasses overriding this method must not trigger a redisplay (causes an infinite loop).
Parameters:
Name Type Description
flag boolean If true, this widget will be rendered as disabled.
Since:
  • v110
Inherited From:

setSelectedRowIndex(index)

Parameters:
Name Type Description
index number The index of the row to select; the first row is 0. A value of -1 causes no row to be selected.