I use Spinner in Dialog Mode.
I set SimpleCursorAdapter for the Spinner with setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
That works fine.
Now instead of simple_spinner_dropdown_item I'm trying to pass my custom layout it does work well too.
But there is a but... it does not have radio button that original simple_spinner_dropdown_item does.
Is it possible to add radio button inside of my custom spinner_dropdown_item that would be selected when spinner dialog is shown?
yes its possible but you have to define a another class for spinner.Just look at this
you have one more option to get your requirement. that is Alert dialog
just check out this Alert Dialog Window with radio buttons in Android and How to create custom and drop down type dialog and Dialog in android
Well I have found solution. ListView (what is inside of the spinners dialog) will check if your View is Checkable and call setChecked. Since android.R.layout.simple_spinner_dropdown_item is checkable it works.
So for my custom List item i have created LinearLayout that implements Checkable
public class CheckableLinearLayout extends LinearLayout implements Checkable
{
private boolean _isChecked = false;
public CheckableLinearLayout(Context context)
{
super(context);
}
public CheckableLinearLayout(Context context, AttributeSet attrs)
{
super(context, attrs);
}
#Override
public void setChecked(boolean checked)
{
_isChecked = checked;
for (int i = 0; i < getChildCount(); i++)
{
View child = getChildAt(i);
if (child instanceof Checkable)
{
((Checkable) child).setChecked(_isChecked);
}
}
}
#Override
public boolean isChecked()
{
return _isChecked;
}
#Override
public void toggle()
{
_isChecked = !_isChecked;
}
}
So ListView calls setChecked and I propagate that down to children views and my CheckBox / RadioButton will get checked / unchecked correctly.
Related
I have a TabPanel with two TabItems in ExtGwt. I want to make both the TabItem selectable/clickable but want to disable/read-only the content panel in the TabItem so that user can not perform any action like input text in the textbox or select any field etc. I tried various approaches but it didnot worked for me. I don't want to make the whole tab disable.
This answer may be useful: https://stackoverflow.com/a/2063082/1313968
An alternative approach is to disable all components in the panel, for example just pass your ContentPanel to the following method:
private void containerSetEnabled(final Container container, final boolean enabled) {
for (int widgetIndex = 0; widgetIndex < container.getWidgetCount(); ++widgetIndex) {
final Widget widget = container.getWidget(widgetIndex);
if (widget instanceof Container) {
containerSetEnabled((Container)widget, enabled);
}
else if (widget instanceof Component) {
((Component)widget).setEnabled(false);
}
}
}
I`m using GWT-Popup-Panel with the following code:
private static class MyPopup extends PopupPanel {
public MyPopup() {
// PopupPanel's constructor takes 'auto-hide' as its boolean parameter.
// If this is set, the panel closes itself automatically when the user
// clicks outside of it.
super(true);
// PopupPanel is a SimplePanel, so you have to set it's widget property to
// whatever you want its contents to be.
setWidget(new Label("Click outside of this popup to close it"));
}
}
public void onModuleLoad() {
final Button b1 = new Button("About");
b1.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
final MyPopup g = new MyPopup();
g.setWidget(RootPanel.get("rightagekeyPanel"));
g.setPopupPositionAndShow(new PopupPanel.PositionCallback() {
public void setPosition(int offsetWidth, int offsetHeight) {
g.setPopupPosition(b1.getAbsoluteLeft(), b1.getAbsoluteTop());
g.setAutoHideEnabled(true);
}
});
g.setVisible(true);
g.setWidth("500px");
g.setHeight("500px");
g.show();
}
});
It does appear when clicking Button b1, but not when clicking it the second time. What is wrong?
Make one popup, outside of your ClickHandler, at the same level as your Button. You also don't need that PositionCallback to center your popup. You can just call g.center() to show it and center it. It's a known issue on the GWT support pages that it won't center properly if you don't set a width to it. It will center properly if you give your popup a proper width.
The reason it doesn't show again is because you remove the widget inside RootPanel.get("rightagekeyPanel") and put it into your popup. It is no longer there the next time you try to do it.
A widget can only be in one place at a time, so if you remove it from its parent, keep track of it with a variable or something, so you can re-use it. Otherwise, you must re-instantiate the widget.
public void onModuleLoad() {
final Button b1 = new Button("About");
final MyPopup g = new MyPopup(); //create only one instance and reuse it.
g.setAutoHideEnabled(true);
g.setSize("500px", "500px"); //sets width AND height
b1.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
g.setWidget(RootPanel.get("rightagekeyPanel"));//DON'T DO THIS.
g.center();//will show it and center it.
}
});
}
Just say in my case I had to add some widget to make the PopUpPanel appear. Try using a label to make sure the Popup is showing.
PopupPanel popup = new PopupPanel();
popup.setVisible(true);
popup.center();
popup.show();
popup.setWidth("500px");
popup.setHeight("500px");
popup.add(new Label("Test"));
GXT3 - Grid: Adding a column with a button to modify row in Editable Grid
In the example the line is editable automatically when line is selected.
http://www.sencha.com/examples/#Exam...oweditablegrid
I want the line to be changed when I click on the edit button that would appear in a popup.
TextButtonCell button = new TextButtonCell();
button.addSelectHandler(new SelectHandler() {
#Override
public void onSelect(SelectEvent event) {
Context c = event.getContext();
Info.display("Event", "Call the popup here.");
}
});
nameColumn.setCell(button);
There is a way do get this?
Thanks in advance for your help.
First of all you have yo create a column with TextBoxCell which may you already created.
Then you have to disable default onclick editable behavior of grid.
For that as per Sencha example's file RowEditingGridExample.java you can override onClick event and prevent to fire default code.
public class RowEditingGridExample extends AbstractGridEditingExample {
#Override
protected GridEditing<Plant> createGridEditing(Grid<Plant> editableGrid) {
return new GridRowEditing<Plant>(editableGrid){
#Override
protected void onClick(ClickEvent event) {
}
};
}
}
And when you click on textBoxCell click handler you can start editing manually.
TextButtonCell button = new TextButtonCell();
button.addSelectHandler(new SelectHandler() {
#Override
public void onSelect(SelectEvent event) {
Context c = event.getContext();
//Here you can pass a new GridCell like with proper cell index and row index.
GridCell cell = new GridCell(getRowIndex(), getCellIndex());
editing.startEditng(cell);
}
});
nameColumn.setCell(button);
If you want to appear row editor in separate popup you have to design it manually.
I have view that extends ViewPart. In this view, I want to add toolbar menu.
What I know, we can add toolbar menu by using ActionContributionItem or Action, and add it to ToolBarMenu from createPartControl method in ViewPart.
But what I don't know is this: How can we disable/enable the toolbar menu programmatically?
So basically, I want to add Play, Stop, and Pause button to toolbar view. So at first, the Play button is on enabled mode, and the others are disabled. When I pressed Play button, it is disabled, and others will be enabled.
For more details, what I want to achieve is something like the following image.
In the red circle are disabled button, and in the blue circle are enabled button.
Instead of using Actions, have a look at Eclipse commands (they are the replacement for actions and function in a cleaner way): http://help.eclipse.org/indigo/topic/org.eclipse.platform.doc.isv/guide/workbench_cmd.htm
You will see in the documentation that you can enable and disable a command and all places where it's used will properly update their state automatically.
There is another approach which I found by stumbling upon on google. This approach is using ISourceProvider to provide variable state. So we can provide the state of enablement/disablement of command in that class (that implementing ISourceProvider). Here is the detail link http://eclipse-tips.com/tutorials/1-actions-vs-commands?showall=1
Try this..
1: Implement your actions. ex: PlayAction, StopAction.
Public class StartAction extends Action {
#Override
public void run() {
//actual code run here
}
#Override
public boolean isEnabled() {
//This is the initial value, Check for your respective criteria and return the appropriate value.
return false;
}
#Override
public String getText() {
return "Play";
}
}
2: Register your view part(Player view part)
Public class Playerview extends ViewPart
{
#Override
public void createPartControl(Composite parent) {
//your player UI code here.
//Listener registration. This is very important for enabling and disabling the tool bar level buttons
addListenerObject(this);
//Attach selection changed listener to the object where you want to perform the action based on the selection type. ex; viewer
viewer.addselectionchanged(new SelectionChangedListener())
}
}
//selection changed
private class SelectionChangedListener implements ISelectionChangedListener {
#Override
public void selectionChanged(SelectionChangedEvent event) {
ISelection selection = Viewer.getSelection();
if (selection != null && selection instanceof StructuredSelection) {
Object firstElement = ((StructuredSelection)selection).getFirstElement();
//here you can handle the enable or disable based on your selection. that could be your viewer selection or toolbar.
if (playaction.isEnabled()) { //once clicked on play, stop should be enabled.
stopaction.setEnabled(true); //Do required actions here.
playaction.setEnabled (false); //do
}
}
}
}
Hope this would help you.
I have a user form with a lot of gwt listbox. The form is like an excel form with named list.
It's ugly and the arrows take place.
I would like the cells were like in excel. The arrow appears only when you click in the cell.
I start to program my own widget with a textbox and a listbox embedded into a DeckPanel, switching when you click on the textbox or when the value change. But with this solution, it is necessary to click again to open the listbox.
Now, it will be great, if when you click on the textbox, the listbox will be displayed already open.
In the code below, I try to do this into the method onClick wih this line:
DomEvent.fireNativeEvent(event.getNativeEvent(), listBox);
But it has no effects.
public class CustomListBox extends Composite implements ClickHandler,
ChangeHandler, HasChangeHandlers {
private final StringListBox listBox;
private final TextBox textBox;
private final DeckPanel panel;
public CustomListBox() {
textBox = new TextBox();
textBox.addClickHandler(this);
textBox.setReadOnly(true);
listBox = new StringListBox();
listBox.addChangeHandler(this);
panel = new DeckPanel();
panel.add(textBox);
panel.add(listBox);
panel.showWidget(0);
// All composites must call initWidget() in their constructors.
initWidget(panel);
}
#Override
public void onClick(ClickEvent event) {
Object sender = event.getSource();
if (sender == textBox) {
panel.showWidget(1);
DomEvent.fireNativeEvent(event.getNativeEvent(), listBox);
}
}
public void addItem(String item) {
listBox.addItem(item);
}
public int getSelectedIndex() {
return listBox.getSelectedIndex();
}
public String getItemText(int selectedIndex) {
return listBox.getItemText(selectedIndex);
}
#Override
public HandlerRegistration addChangeHandler(ChangeHandler handler) {
return listBox.addChangeHandler(handler);
}
#Override
public void onChange(ChangeEvent event) {
Object sender = event.getSource();
if (sender == listBox) {
textBox.setText(getItemText(getSelectedIndex()));
panel.showWidget(0);
}
}
}
Since you are already programming your own widget, why don't you go all the way. Don't swap out the text box for a list box widget. Instead of a textbox use a label. Add an arrow to your label background when you mouse over, then use a popupPanel for the list itself. In the popupPanel you can make the list items whatever you like, just make sure when you click on it, it sets the text in your original label.