Flex datagrid update dataprovider

For example, you might have two different item editors. Within the event listener you can examine the data to be edited or other information, and open the appropriate item editor by doing the following:. Dispatched when the user releases the mouse button while over an item renderer, tabs to the DataGrid control or within the DataGrid control, or in any other way attempts to edit an item.

The default listener for this event sets the DataGrid. You typically write your own event listener for this event to disallow editing of a specific item or items. Calling the preventDefault method from within your own event listener for this event prevents the default listener from executing.

The list components have a default handler for this event that copies the data from the item editor to the data provider of the list control. The default event listener performs the following actions:. You typically write your own event listener for this event to allow custom modifications to the itemEditor before the user can begin editing.

Dispatched when an item renderer gets focus, which can occur if the user clicks on an item in the DataGrid control or navigates to the item using a keyboard.

Only dispatched if the item is editable. Dispatched when an item renderer loses focus, which can occur if the user clicks another item in the DataGrid control or clicks outside the control, or uses the keyboard to navigate to another item in the DataGrid control or outside the control. Filters: Retrieving Data from Server Retrieving Data from Server Classes x. Package mx. DataGrid class as an alternative to this class. The DataGrid control is like a List except that it can show more than one column of data making it suited for showing objects with multiple properties.

The DataGrid control provides the following features: Columns of different widths or identical fixed widths Columns that the user can resize at runtime Columns that the user can reorder at runtime Optional customizable column headers Ability to use a custom item renderer for any column to display data other than text Support for sorting the data by clicking on a column The DataGrid control is intended for viewing data, and not as a layout tool like an HTML table.

The mx. The DataGrid control has the following default sizing characteristics: Characteristic Description Default size If the columns are empty, the default width is pixels. If the columns contain information but define no explicit widths, the default width is pixels per column.

The DataGrid width is sized to fit the width of all columns, if possible. The default number of displayed rows, including the header is 7, and each row, by default, is 20 pixels high.

Minimum size 0 pixels. Maximum size by DataGridItemRenderer mx. DataGridColumn mx. DataGridDragProxy mx. Public Properties. Hide Inherited Public Properties. Show Inherited Public Properties. A convenience accessor for the description property in this UIComponent's accessibilityProperties object. A convenience accessor for the silent property in this UIComponent's accessibilityProperties object. The current accessibility implementation AccessibilityImplementation for this InteractiveObject instance.

A convenience accessor for the name property in this UIComponent's accessibilityProperties object. The current accessibility options for this display object. A convenience accessor for the shortcut property in this UIComponent's accessibilityProperties object.

A flag that indicates whether drag-selection is enabled. A flag that indicates whether you can allow more than one item to be selected at the same time. Indicates the alpha transparency value of the object specified. The delegate object that handles the automation-related functionality.

Name that can be used as an identifier for this object. For components, this layout constraint property is a facade on top of the similarly-named style. A value from the BlendMode class that specifies which blend mode to use. If set to true, Flash runtimes cache an internal bitmap representation of the display object. If non-null, this Matrix object defines how a display object is rendered when cacheAsBitmap is set to true.

A reference to the class object or constructor function for a given object instance. The item in the data provider this component should render when this component is used as an item renderer or item editor. Name of the field in the data provider items to display as the data tip. User-supplied function to run on each item to determine its dataTip. Determines the order in which items inside of containers are rendered.

Specifies the optional DesignLayer instance associated with this visual element. A reference to the document object associated with this UIComponent. A flag that indicates whether you can drag items out of this control and drop them on other controls. A flag that indicates whether items can be moved instead of just copied from the control as part of a drag-and-drop operation.

A flag that indicates whether dragged items can be dropped onto the control. The text that displayed by a component's error tip when a component is monitored by a Validator and validation fails. Number that specifies the explicit height of the component, in pixels, in the component's coordinates. The maximum recommended height of the component to be considered by the parent during layout. The maximum recommended width of the component to be considered by the parent during layout. The minimum recommended height of the component to be considered by the parent during layout.

The minimum recommended width of the component to be considered by the parent during layout. Number that specifies the explicit width of the component, in pixels, in the component's coordinates. An indexed array that contains each filter object currently associated with the display object. Indicates whether the component can receive focus when tabbed to. Gets the FocusManager that controls focus for this component and its peers. The module factory that provides the font context for this component.

A flag that indicates whether child objects can receive focus. The height of the header cell of the column, in pixels. Designates another sprite to serve as the hit area for a sprite. A property that indicates whether the horizontal scroll bar is always on, always off, or automatically changes based on the parameters passed to the setScrollBarProperties method.

Specifies whether this component is included in the layout of the parent container. The beginning of this component's chain of inheriting styles. A flag that determines if an object has been through all three phases of layout: commitment, measurement, and layout provided that any were required. An Array containing the indices required to reference this UIComponent object from its parent document. Set to true by the PopUpManager to indicate that component has been popped up.

A user-supplied function to run on each item to determine its label. When a component is used as a drop-in item renderer or drop-in item editor, Flex initializes the listData property of the component with the additional data from the list control. A flag that indicates whether scrolling is live as the scrollbar thumb is moved or the view is not updated until the thumb is released.

The index of the first column in the control that scrolls. The index of the first row in the control that scrolls. When true, the component keeps its projection matrix centered on the middle of its bounding box. The calling display object is masked by the specified mask object. The maximum value for the horizontalScrollPosition property. The maximum value for the verticalScrollPosition property. The default minimum height of the component, in pixels. A flag that indicates whether menu-style selection should be used.

Obtains the meta data object of the DisplayObject instance if meta data was stored alongside the the instance of this DisplayObject in the SWF file through a PlaceObject4 tag.

A module factory is used as context for using embedded fonts and for finding the style manager that controls the styles for this component. Determines whether or not the children of the object are mouse, or user input device, enabled. Specifies whether this object receives mouse, or other user input, messages. Specifies whether a virtual keyboard an on-screen, software keyboard should display when this InteractiveObject instance receives focus.

The beginning of this component's chain of non-inheriting styles. Specifies whether the display object is opaque with a certain background color.

Specifies the height of a component as a percentage of its parent's size. Specifies the width of a component as a percentage of its parent's size.

Defines a set of adjustments that can be applied to the object's transform in a way that is invisible to its parent's layout. Set to true after immediate or deferred child creation, depending on which one happens.

An Array containing the indices of the items in the data provider of the Repeaters in the parent document that produced this UIComponent. An Array containing references to the Repeater objects in the parent document that produced this UIComponent. A function that computes the string to be displayed as the ScrollTip. A flag that indicates whether the list shows selected items as selected.

An array of indices in the data provider of the selected items. An array of references to the selected items in the data provider. A function used to compare items in the selectedItems property against items in the data provider. A flag that indicates whether the control should show column headers. A flag that determines if an automation object shows in the automation hierarchy. A flag that indicates whether a tooltip should appear near the scroll thumb when it is being dragged.

Defines the area that should remain on-screen when a soft keyboard is displayed not available on iOS. Storage for the inline inheriting styles on this object. A component's parent is used to evaluate descendant selectors. Returns the SystemManager object used by this component. Determines whether the children of the object are tab enabled. A flag that indicates whether this object can receive focus via the TAB key This is similar to the tabEnabled property used by the Flash Player.

This is usually true for components that handle keyboard input, but some components in controlbars have them set to false because they should not steal focus from another component like an editor. Sets the x coordinate for the transform center of the component. Sets the y coordinate for the transform center of the component. Sets the z coordinate for the transform center of the component.

An Array of Transition objects, where each Transition object defines a set of effects to play when a view state change occurs.

Array of properties that are currently being tweened on this object. A flag that determines if an object has been through all three phases of layout validation provided that any were required. A Boolean value that indicates whether the pointing hand hand cursor appears when the pointer rolls over a sprite in which the buttonMode property is set to true. Used by a validator to associate a subfield with this component.

A flag that indicates whether the individual rows can have different height. A property that indicates whether the vertical scroll bar is always on, always off, or automatically changes based on the parameters passed to the setScrollBarProperties method.

A flag that indicates whether text in the row should be word wrapped. Protected Properties. Hide Inherited Protected Properties. Show Inherited Protected Properties. A copy of the value normally stored in collection used while running data changes effects. A copy of the value normally stored in iterator used while running data changes effects.

The offset of the item in the data provider that is the selection anchor point. The effect that plays when changes occur in the data provider for the control, set through the itemsChangeEffect style. The offset of the item in the data provider that is the selection caret point.

The DisplayObject that contains the graphics that indicate which renderer is the caret. The DisplayObject that contains the graphics that indicates which renderer is the caret for lockedColumns. The DisplayObject that contains the graphics that indicates which renderer is highlighted for lockedColumns.

A flag that indicates that the a data change effect has just completed. A dictionary mapping item renderers to the ItemWrappers used to supply their data. The column count requested by explicitly setting the columnCount property. The column width requested by explicitly setting the columnWidth.

The row count requested by explicitly setting rowCount. The row height requested by explicitly setting rowHeight. The DisplayObject that contains the graphics that indicates which renderer is highlighted. The renderer that is currently rolled over or under the caret. The UID of the item that is current rolled over or under the caret. A flag that indicates whether the columnWidth and rowHeight properties need to be calculated.

A flag that indicates that the size of the renderers may have changed. The main IViewCursor used to fetch items from the data provider and pass the items to the renderers. A flag that indicates that a page fault as occurred and that the iterator's position is not valid not positioned at the topmost item being displayed. A flag that indicates if keyboard selection was interrupted by a page fault. The most recently calculated index where the drag item should be added to the drop target.

An internal display object that parents all of the item renderers, selection and highlighting indicators and other supporting graphics.

The sub-component that contains locked rows for locked columns. The collection view that temporarily preserves previous data provider state to facilitate running data change effects. A hash map of currently unused item renderers that may be used again in the near future.

A hash map of item renderers to their respective ListRowInfo object. A flag that indicates if a data effect should be initiated the next time the display is updated. A flag indicating if a data change effect is currently running.

A flag that the scrolling area changed due to the appearance or disappearance of scrollbars. A hash table of ListBaseSelectionData objects that track which items are currently selected. The layer in listContent where all selection and highlight indicators are drawn. A hash map of item renderers that are not subject to the layout algorithms of the list. A flag that indicates whether the value of the wordWrap property has changed since the last time the display list was updated.

The DataGrid control has a default handler for this event that implements a single-column sort. Multiple-column sort can be implemented by calling the preventDefault method to prevent the single column sort and setting the sort property of the data provider. Note : The sort arrows are defined by the default event handler for the headerRelease event.

If you call the preventDefault method in your event handler, the arrows are not drawn. Dispatched when the user releases the mouse button on a column header after having dragged the column to a new location resulting in shifting the column to a new index. Dispatched when the editedItemPosition property has been set and the item can be edited.

You can write an event listener for this event to modify the data passed to the item editor. For example, you might modify the data, its format, or other information used by the item editor. You can also create an event listener to specify the item editor used to edit the item.

For example, you might have two different item editors. Within the event listener you can examine the data to be edited or other information, and open the appropriate item editor by doing the following:. Dispatched when the user releases the mouse button while over an item renderer, tabs to the DataGrid control or within the DataGrid control, or in any other way attempts to edit an item. The default listener for this event sets the DataGrid. You typically write your own event listener for this event to disallow editing of a specific item or items.

Calling the preventDefault method from within your own event listener for this event prevents the default listener from executing. The list components have a default handler for this event that copies the data from the item editor to the data provider of the list control. The default event listener performs the following actions:. You typically write your own event listener for this event to allow custom modifications to the itemEditor before the user can begin editing.

Dispatched when an item renderer gets focus, which can occur if the user clicks on an item in the DataGrid control or navigates to the item using a keyboard. Only dispatched if the item is editable. Dispatched when an item renderer loses focus, which can occur if the user clicks another item in the DataGrid control or clicks outside the control, or uses the keyboard to navigate to another item in the DataGrid control or outside the control.

The DataGrid control is like a List except that it can show more than one column of data making it suited for showing objects with multiple properties. The DataGrid control provides the following features: Columns of different widths or identical fixed widths Columns that the user can resize at runtime Columns that the user can reorder at runtime Optional customizable column headers Ability to use a custom item renderer for any column to display data other than text Support for sorting the data by clicking on a column The DataGrid control is intended for viewing data, and not as a layout tool like an HTML table.

The mx. The DataGrid control has the following default sizing characteristics: Characteristic Description Default size If the columns are empty, the default width is pixels. If the columns contain information but define no explicit widths, the default width is pixels per column. The DataGrid width is sized to fit the width of all columns, if possible. The default number of displayed rows, including the header is 7, and each row, by default, is 20 pixels high. Minimum size 0 pixels.

Maximum size by DataGridItemRenderer mx. DataGridColumn mx. DataGridDragProxy mx. A convenience accessor for the description property in this UIComponent's accessibilityProperties object.

A convenience accessor for the silent property in this UIComponent's accessibilityProperties object. A convenience accessor for the name property in this UIComponent's accessibilityProperties object.

A convenience accessor for the shortcut property in this UIComponent's accessibilityProperties object. A flag that indicates whether drag-selection is enabled. A flag that indicates whether you can allow more than one item to be selected at the same time. The delegate object that handles the automation-related functionality. Name that can be used as an identifier for this object. For components, this layout constraint property is a facade on top of the similarly-named style.

The item in the data provider this component should render when this component is used as an item renderer or item editor. Name of the field in the data provider items to display as the data tip.

User-supplied function to run on each item to determine its dataTip. Determines the order in which items inside of containers are rendered. Specifies the optional DesignLayer instance associated with this visual element. A reference to the document object associated with this UIComponent. A flag that indicates whether you can drag items out of this control and drop them on other controls. A flag that indicates whether items can be moved instead of just copied from the control as part of a drag-and-drop operation.

A flag that indicates whether dragged items can be dropped onto the control. The text that displayed by a component's error tip when a component is monitored by a Validator and validation fails. Number that specifies the explicit height of the component, in pixels, in the component's coordinates. The maximum recommended height of the component to be considered by the parent during layout. The maximum recommended width of the component to be considered by the parent during layout.

The minimum recommended height of the component to be considered by the parent during layout. The minimum recommended width of the component to be considered by the parent during layout. Number that specifies the explicit width of the component, in pixels, in the component's coordinates.

Indicates whether the component can receive focus when tabbed to. Gets the FocusManager that controls focus for this component and its peers. The module factory that provides the font context for this component.

A flag that indicates whether child objects can receive focus. The height of the header cell of the column, in pixels. A property that indicates whether the horizontal scroll bar is always on, always off, or automatically changes based on the parameters passed to the setScrollBarProperties method. Specifies whether this component is included in the layout of the parent container. The beginning of this component's chain of inheriting styles.

A flag that determines if an object has been through all three phases of layout: commitment, measurement, and layout provided that any were required. An Array containing the indices required to reference this UIComponent object from its parent document.

Set to true by the PopUpManager to indicate that component has been popped up. A user-supplied function to run on each item to determine its label. When a component is used as a drop-in item renderer or drop-in item editor, Flex initializes the listData property of the component with the additional data from the list control. A flag that indicates whether scrolling is live as the scrollbar thumb is moved or the view is not updated until the thumb is released. The index of the first column in the control that scrolls.

The index of the first row in the control that scrolls. When true, the component keeps its projection matrix centered on the middle of its bounding box. The maximum value for the horizontalScrollPosition property. The maximum value for the verticalScrollPosition property. The default minimum height of the component, in pixels.

A flag that indicates whether menu-style selection should be used. A module factory is used as context for using embedded fonts and for finding the style manager that controls the styles for this component. The beginning of this component's chain of non-inheriting styles.

Specifies the height of a component as a percentage of its parent's size. Specifies the width of a component as a percentage of its parent's size. Defines a set of adjustments that can be applied to the object's transform in a way that is invisible to its parent's layout. Set to true after immediate or deferred child creation, depending on which one happens. An Array containing the indices of the items in the data provider of the Repeaters in the parent document that produced this UIComponent.

An Array containing references to the Repeater objects in the parent document that produced this UIComponent. A function that computes the string to be displayed as the ScrollTip. A flag that indicates whether the list shows selected items as selected. An array of indices in the data provider of the selected items. An array of references to the selected items in the data provider.

A function used to compare items in the selectedItems property against items in the data provider. A flag that indicates whether the control should show column headers. A flag that determines if an automation object shows in the automation hierarchy.

A flag that indicates whether a tooltip should appear near the scroll thumb when it is being dragged. Storage for the inline inheriting styles on this object. A component's parent is used to evaluate descendant selectors. Returns the SystemManager object used by this component.

A flag that indicates whether this object can receive focus via the TAB key This is similar to the tabEnabled property used by the Flash Player. This is usually true for components that handle keyboard input, but some components in controlbars have them set to false because they should not steal focus from another component like an editor.

Sets the x coordinate for the transform center of the component. Sets the y coordinate for the transform center of the component. Sets the z coordinate for the transform center of the component.

An Array of Transition objects, where each Transition object defines a set of effects to play when a view state change occurs. Array of properties that are currently being tweened on this object. A flag that determines if an object has been through all three phases of layout validation provided that any were required.

Used by a validator to associate a subfield with this component. A flag that indicates whether the individual rows can have different height. A property that indicates whether the vertical scroll bar is always on, always off, or automatically changes based on the parameters passed to the setScrollBarProperties method.

A flag that indicates whether text in the row should be word wrapped. A copy of the value normally stored in collection used while running data changes effects. A copy of the value normally stored in iterator used while running data changes effects. The offset of the item in the data provider that is the selection anchor point.

The effect that plays when changes occur in the data provider for the control, set through the itemsChangeEffect style. The offset of the item in the data provider that is the selection caret point. The DisplayObject that contains the graphics that indicate which renderer is the caret. The DisplayObject that contains the graphics that indicates which renderer is the caret for lockedColumns. The DisplayObject that contains the graphics that indicates which renderer is highlighted for lockedColumns.

A flag that indicates that the a data change effect has just completed. The rows' heights are defined by the rowHeight property and if its value is not specified, the computed "preferred" height of the first row is used.

If the variableRowHeight property is set to true, then the height of each row is the maximum measured height of each cell that's been exposed, so far. Similarly, the DataGrid uses the first row's height or the rendered height of the "typicalItem", if it was specified as an estimate for the heights of rows that haven't been scrolled into view yet. This means that the DataGrid Grid's contentHeight, i.

Since the scrollbar's thumb size reflects the content size, you may see its height change a little as you scroll, although as the number of rows gets large, this effect usually isn't noticeable.

That's why by default the DataGrid is configured for fixed height rows. This application displays the min, max, and average value of the selected cells. The DataGrid's last column displays the computed min and max values for each row.

DataGrid supports five selection modes including GridSelectionMode. Each time the user attempts to change the selection the DataGrid dispatches a "selectionChanging" event and, if that event is not cancelled with event. This application uses the changing event to cancel attempts to include the last column in the selection, because the last column isn't part of the dataProvider, it's just a summary of the row's values in term of the minumum and maximum.

To handle the special case where the user attempts to select all cells by typing control-A, we cancel the selectionChanging event and then use dataGrid. The valueCommit event is dispatched when the selection changes for any reason, not just in response to user input, and so we use that to update the selectionMinimum,Maximum,Average variables. Each time the selection changes, the application's selectionChangeHandler method updates the three bindable variables that are dispayed in the control bar.

The first array named submissionsAllAry, see code below holds all the records returned from calling the CFC function. The second array named submissionsSlicedAry holds only a subset of the first array. The slice function creates an array by "slicing out" those array elements specified by the start and end arguments.

I then use this second array submissionsSlicedAry to create the ArrayCollection object submissionsViewAryCol that is the dataProvider for the datagrid. Therefore all that is displayed in the datagrid are those records in the subset array the records I've sliced out of the array that is holding all the records. When the user clicks on the Next button function getNext is called.

This function increases the start and end values, gets a new "slice" out of the array holding all the records, and recreates the ArrayCollection that is the datagrid's dataProvider. When the user clicks on the Previous button, function getPrevious is called. This function works similar to the getNext function except moving the start and end values backwards.

This simple implementation has not been tested with very large datasets thousands of records and has not been tested with sorting and filtering of the datagrid. From the error message I Does anyone else have this problem?

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