Is it possible to make the entire row of a ListView clickable in wicket?I've seen this example,
But i need a scrollable table instead of pagination. Thats why i am going for a ListView where upon clicking any row of the table, content of the row should be displayed below the table for editing.
thanks,
Is there any other way to achieve this?
is essentially the same way, you have to pass a model to the list view...
//in ListView class
protected void populateItem(final ListItem<T> item) {
item.add(new AjaxEventBehavior("onclick") {
#Override
protected void onEvent(AjaxRequestTarget target) {
T object=item.getModelObject();
//do some stuff or a callback, besides you can use ajax
}
});
}
Related
In order to use a TableView (with resizable columns) as drag source,
I have attached an onDragDetected handler on that TableView with the effect, that resizing TableColumns does not work anymore: If the user clicks into the TableHeaderRow for dragging the column separators, these mouse events are consumed by my handler too.
The handler is attached to the whole TableView and I do not see a way to distinguish between events from TableRows and events from the TableHeaderRow.
Attaching the handler to the data-rows only is not appropriate in my case, since I need multiline selection (and do not want to have dependencies from the RowFactory to the application data model).
Any suggestions?
best Hans
I found the solution myself: I had to look up the TableHeaderRow instance with the lookup-method, and discard the DRAG_DETECTED event there.
Pane header = (Pane) mainTableView.lookup("TableHeaderRow");
header.setOnDragDetected(new EventHandler<MouseEvent>() {
public void handle(MouseEvent event) {
System.out.println("ignoring drag operation from table header.");
event.consume();
}
});
After that, resising of table columns works. Maybe there is something wrong with my drag+drop event handling that initially caused the problem!? Somebody voted down without comment...
The solution by Hans does work, but only after the window is shown. I added a window.setOnShown((WindowEvent e) listener and then I was able to do the lookup and header.setOnDragDetected.
Here is how I added it:
window.setOnShown((WindowEvent e) -> {
Pane header = (Pane) mainTableView.lookup("TableHeaderRow");
....
});
Otherwise, lookup returns null.
I have tried searching around for this, but what I found was mainly for disabling a single input type.
What I want to do is disable every input type on a single page. Everything. Textboxes, checkboxes the whole lot.
I couldnt figure out how to modify the loops I found, which is why I am asking here, beacause it's likely one of you has a piece of code laying around that can do it.
Thank you in advance.
try below if you like to do it in javascript/jquery
$(document).ready(function(){
$('input').attr('disabled','disabled');
});
OR try below if you want in asp.net
ach control has child controls, so you'd need to use recursion to reach them all:
protected void DisableControls(Control parent, bool State) {
foreach(Control c in parent.Controls) {
if (c is DropDownList) {
((DropDownList)(c)).Enabled = State;
}
DisableControls(c, State);
}
}
Then call it like so:
protected void Event_Name(...) {
DisableControls(Page,false); // use whatever top-most control has all the dropdowns or just the page control
} // divs, tables etc. can be called through adding runat="server" property
This problem has bugged me for several years and maybe someone here knows a simple solution, since I just ran into it again.
QUESTION: Is there any way to get the XtraGrid to "forget" the current focused row index before a new (different) datasource is assigned to the grid?
BACKGROUND
We use the XtraGrid as a kind of controller for what is displayed in another panel of a multipane Winform.
Now imagine a hypothetical scenario where the datasource of the XtraGrid keeps changing according to menu selections. Menu item 1 populates the grid with a list of today's entrees in the cafeteria: Id, Name. Menu item 2 populates the grid with a list of Customers the user must phone that day: ID, Name. Important thing is that these are separate distinct datasources, and the grid's datasource is being assigned and reassigned.
CRITICAL FACT FOR THIS QUESTION:
We want the grid's FocusedRowChanged event to be the single place where we trap the user's selection in the controller grid. We are a "no spaghetti code" shop. FocusedRowChanged is better than a click event because it handles keyboard navigation too. The row with the focus contains the ID of the detail record we need to fetch from the database for display in Panel #2. This works--most of the time.
Here's how it doesn't work: let's say that on a given day, the list of customers the user must contact contains only one row. So the first (and only) row in the grid is the focused row. Now let's say that the user goes up to the menu and selects the menu item to display the day's cafeteria entrees. When the user clicks on the first item in the Entrees list, the FocusedRowChanged event does NOT fire because the grid has retained a memory of the focused row index from the previous datasource. The focused row index has not changed. And thus the user's selection doesn't trigger anything.
I tried to get DevExpress to offer a second more row-object-oriented mode (as distinct from row-index-oriented approach) whereby each row in the grid would have a GUID, and the FocusedRowChanged event would fire whenever the GUID of the currently focused row differed from the GUID of the previously focused row, regardless of whether the focused row index happened to be the same. This would allow dynamic changes of datasource and enable the desired behavior. But they demurred.
So I'll ask my question again, Is there any way to get the XtraGrid to "forget" the current focused row index before a new datasource is assigned to the grid?
Tim, I had the exact same problem when the grid only had one row of data in it and then changed data sources. I solved it by setting the gridview.FocusedRowHandle = -1 after setting the new datasource.
In a similar situation, I am subscribing to the
FocusedRowObjectChanged
event (using DevExpress 16.1).
I think that the best solution to this problem is to create a new GridView object and override its DoChangeFocusedRowInternal method. Below you will find the default implementation of this method. All you need to do is to change the marked row just as your needs dictate. Also, take a look at the How to create a GridView descendant class and register it for design-time use article, it contains some useful information.
public class MyGridView : GridView {
protected override void DoChangeFocusedRowInternal(int newRowHandle, bool updateCurrentRow) {
if(this.lockFocusedRowChange != 0) return;
if(!IsValidRowHandle(newRowHandle))
newRowHandle = DevExpress.Data.DataController.InvalidRow;
if(FocusedRowHandle == newRowHandle) return; // <<<<<<
int currentRowHandle = FocusedRowHandle;
BeginLockFocusedRowChange();
try {
DoChangeFocusedRow(FocusedRowHandle, newRowHandle, updateCurrentRow);
}
finally {
EndLockFocusedRowChange();
}
RaiseFocusedRowChanged(currentRowHandle, newRowHandle);
}
}
UPDATE
My code:
namespace MyXtraGrid {
public class MyGridControl : GridControl {
protected override BaseView CreateDefaultView() {
return CreateView("MyGridView");
}
protected override void RegisterAvailableViewsCore(InfoCollection collection) {
base.RegisterAvailableViewsCore(collection);
collection.Add(new MyGridViewInfoRegistrator());
}
}
public class MyGridViewInfoRegistrator : GridInfoRegistrator {
public override string ViewName { get { return "MyGridView"; } }
public override BaseView CreateView(GridControl grid) {
return new MyGridView(grid as GridControl);
}
}
public class MyGridView : GridView {
public MyGridView(GridControl ownerGrid) : base(ownerGrid) { }
public MyGridView() { }
protected virtual bool RowEqual(int focusedRowHandle, int newRowHandle) {
if(IsDesignMode)
return focusedRowHandle == newRowHandle;
DataRow row1 = GetDataRow(focusedRowHandle);
DataRow row2 = GetDataRow(newRowHandle);
return row1 == row2;
}
protected override void DoChangeFocusedRowInternal(int newRowHandle, bool updateCurrentRow) {
if(this.lockFocusedRowChange != 0) return;
if(!IsValidRowHandle(newRowHandle))
newRowHandle = DevExpress.Data.DataController.InvalidRow;
if(RowEqual(FocusedRowHandle, newRowHandle))
return;
int currentRowHandle = FocusedRowHandle;
BeginLockFocusedRowChange();
try {
DoChangeFocusedRow(FocusedRowHandle, newRowHandle, updateCurrentRow);
}
finally {
EndLockFocusedRowChange();
}
RaiseFocusedRowChanged(currentRowHandle, newRowHandle);
}
}
}
You can subscribe on the DataSourceChanged event which will fire when Data source changes (you guessed it!) so then you can get using GetFocusedObject() the object and display the relevant items for the other grid...
I've been using hardcoded hyperlinks for my web app navigation, but the app has grown since and managing it is becoming a real pain. I've decided to replace what I have with the TreeView control, however I want to make several changes to the way it looks.
Is there any property that needs to be set, that would allow user to expand the TreeView node by clicking its text instead of +/- ?
I've already set ShowExpandColapse to 'false'.
I want my final result to end up as something similar to the TreeView on the left of the MSDN site.
Could anyone point me at the right direction please?
Set TreeNode.SelectAction to either Expand, or SelectExpand.
you can use xml data source or direct binding from db to treview
in the TreeView DataBound event we can write d recursive function as below to fetch each node and assign expand action to them.
protected void TreeView1_DataBound(object sender, EventArgs e)
{
foreach (TreeNode node in TreeView1.Nodes)
{
node.SelectAction = TreeNodeSelectAction.Expand;
PrintNodesRecursive(node);
}
}
public void PrintNodesRecursive(TreeNode oParentNode)
{
// Start recursion on all subnodes.
foreach(TreeNode oSubNode in oParentNode.ChildNodes)
{
oSubNode.SelectAction = TreeNodeSelectAction.Expand;
PrintNodesRecursive(oSubNode);
}
}
I think you just have to do this in code: handle the Click event, determine the currently-selected tree node, and toggle its Expanded property (I think that's what it's called here).
You can do this only this way! http://geekswithblogs.net/rajiv/archive/2006/03/16/72575.aspx
With respect,
Alexander
I have a DataGrid that I have bound to a property:
<cd:DataGrid
Name="myDataGrid"
ItemsSource="{Binding Mode=OneWay,Path=Thingies}"
VerticalScrollBarVisibility="Auto"
HorizontalScrollBarVisibility="Auto">
...
When the Thingies property changes, once all rows in the DataGrid have been populated with the new contents of Thingies, I want the DataGrid to scroll to the bottom row.
In WinForms, I would have done this by subscribing to the DataBindingComplete event. MSDN Forums contains several suggestions on how to do this with Silverlight 4.0 but they range from completely evil to just plain fugly:
start a 100ms timer on load, and scroll when it elapses
count rows as they're added, and scroll to the bottom when the number of added rows equals the number of entities in the data source
Is there an idiomatic, elegant way of doing what I want in Silverlight 4.0?
I stumbled upon this while searching for a resolution to the same problem. I was finding that when I attempted to scroll the selected item into view after filter and sort changes that I frequently received a run time error (index out of bounds). I knew instinctively that this was because the grid was not populated at that particular moment.
Aaron's suggestion worked for me. When the grid is defined, I add an event listener:
_TheGrid.LayoutUpdated += (sender, args) => TheGrid.ScrollIntoView(TheGrid.SelectedItem, TheGrid.CurrentColumn);
This solved my problem, and seems to silently exit when the parameters are null, too.
Why not derive from DataGrid and simply create your own ItemsSourceChanged event?
public class DataGridExtended : DataGrid
{
public delegate void ItemsSourceChangedHandler(object sender, EventArgs e);
public event ItemsSourceChangedHandler ItemSourceChanged;
public new System.Collections.IEnumerable ItemsSource
{
get { return base.ItemsSource; }
set
{
base.ItemsSource = value;
EventArgs e = new EventArgs();
OnItemsSourceChanged(e);
}
}
protected virtual void OnItemsSourceChanged(EventArgs e)
{
if (ItemSourceChanged != null)
ItemSourceChanged(this, e);
}
}
Use the ScrollIntoView method for achieving this.
myDataGrid.ItemSource = Thingies;
myDataGrid.UpdateLayout();
myDataGrid.ScrollIntoView(MyObservableCollection[MyObservableCollection.Count - 1], myDataGrid.Columns[1]);
You don't need to have any special event for this.
I think the nice way to do it, in xaml, is to have the binding NotifyOnTargetUpdated=true, and then you can hook the TargetUpdated to any event of your choice.
<ThisControl BindedProperty="{Binding xxx, NotifyOnTargetUpdated=true}"
TargetUpdated="BindingEndedHandler">