Class: ChartWidget

parasql.widget.ChartWidget

Copyright:
  • ParaSQL LLC 2013-2020. All rights reserved.
License:
Fires:
  • parasql.Event#event:render The ChartWidget 'render' event is fired in response to the underlying chart 'ready' event.
  • parasql.Event#event:click The ChartWidget 'click' event is fired when a user clicks on a chart element which changes the selected row in the underlying DataTable.

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.
Inherited From:

clearRecordsDiscardChanges()

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

clearSelection()

Clears the current row selection.
Inherited From:

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

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

getDataTable() → {parasql.schema.DataTable}

Inherited From:
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
Inherited From:
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

getGChart() → {google.visualization.Chart}

Since:
  • v96
Returns:
Returns the Google Chart object used to render this ChartWidget.
Type
google.visualization.Chart

getLastRenderedDataCell() → {parasql.widget.ReportWidget.DataCellInfo}

Since:
  • v101
Inherited From:
Returns:
Returns info about the last rendered data cell.
Type
parasql.widget.ReportWidget.DataCellInfo

getMap() → {google.maps.Map}

You can access the google.maps.Map instance by calling this method.
Since:
  • v69
Returns:
Returns the underlying Map instance if this ChartWidget is a Google Map, otherwise null.
Type
google.maps.Map
Example
myChartWidget.getMap().setZoom(15);

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

You can change the active query via the parasql.widget.DataWidget#setActiveQuery method.
Inherited From:
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
Inherited From:
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
Inherited From:
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}

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

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

Convenience method to return the DataValue in the specified column of the currently selected row.
Parameters:
Name Type Description
tableName string
columnName string
Since:
  • v71
Inherited From:
Throws:
If tableName.columnName does not exist in the underlying DataTable.
Type
TypeError
Returns:
A DataValue object or null if no row is selected.
Type
parasql.schema.DataValue

getTransactionSet() → {parasql.schema.TransactionSet}

Since:
  • v64
Inherited From:
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.
Inherited From:

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
Inherited From:

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.
Inherited From:

toggleDataTableView()

Show/Hide the Data Table behind this ChartWidget.