I have a TreeViewer in my view. Whenever I press a button (say s), the viewer selects the first item in the tree starting with this letter (say stackoverflow). Is there a way to disable this behaviour?
Thank you.
Restricting all key events on Tree looks promising but you would loose navigating the tree structure and expand/collapse on tree node and all other functionality.
tree.addKeyListener(new KeyAdapter() {
#Override
public void keyPressed(KeyEvent e) {
e.doit = false;
}
});
Related
I'm probably doing something else wrong but I've followed examples given here:
How to remove a row from the Cell Table
and
GWT get CellTable contents for printing or export
to accomplish my goal and the result is close but not quite right.
I have a page with two widgets. The first wiget contains a CellTable that uses an aSync ListDataProvider to pull results and populate a table. The table has a selection change event handler associated with it that loads further details about the selected item into the second widget below it.
public OrderAdminTable() {
selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
#Override
public void onSelectionChange(SelectionChangeEvent event) {
OrderAdminListProxy selected = selectionModel.getSelectedObject();
if (selected != null && orderSnapShot != null) {
orderSnapShot.loadSnapShot(selected);
}
}
});
initTable();
this.addStyleName("order-list fixed_headers BOM");
this.setSelectionModel(selectionModel);
}
Once the second widget has loaded the details about the selected item, the user can remove the item from the table/list by clicking a button in the RootPanel that is the parent of both widgets.
searchView.getCmdReview().addClickHandler(new ClickHandler() {
#Override public void onClick(ClickEvent event) {
searchView.getOrderAdminSnapshot().reviewOrder();//this line calls a web service that deletes the item from the server data
dataProvider.getList().remove(searchView.getOrderAdminSnapshot().getSelectedOrder());
for(int i=0;i<table.getRowCount();i++){
TableRowElement row = table.getRowElement(i);
for(int j=0;j<row.getCells().getLength();j++){
if(row.getCells().getItem(j).getInnerText().contains(searchView.getOrderAdminSnapshot().getSelectedOrder().getSalesOrderNumber())){
row.setAttribute("removed", "true");
row.addClassName("hidden");
}
}
}
}
});
This all works fine until you select another item in the table. When that happens, the selection change event seems to redraw the table and remove my custom attribute and class from the previously selected item. This makes it appear in the list again.
The ultimate goal here is to avoid a round trip to the server to pull new results when you remove an item from the list. The line "searchView.getOrderAdminSnapshot().reviewOrder();" makes a web service call that removes the item from the data on the server side so it does not appear in subsequent reloads.
Is there some way to force the selection change event to maintain the state of the table row that was previously selected? Is there a better way to remove the selected item from the list? Any advice would be appreciated.
Once you remove the object from the list dataProvider.getList().remove, it should disappear from the table. There is no need to hide the row - this row should be gone. So your loop should never find it.
Is there a way using the treegrid in gwt-ext to have different context menus for different rows?
For example I would like my leaf rows to have different menu options then my non-leaf rows, or at least be able to disable menu options when they aren't revelent to the row that was right clicked.
I created a solution for this problem:
When you create the leafs, you should set the property "type" to "leaf", and the others to "non-leaf".
BaseTreeModel base = new BaseTreeModel();
base.set("type", "leaf");
So, in the selectionChanged event of your tree, you put the verification, and create the menu only for your leafs.
*treePanel.getSelectionModel().addListener(Events.SelectionChange, new SelectionChangedListener<ModelData>() {
#Override
public void selectionChanged(SelectionChangedEvent<ModelData> data) {
BaseTreeModel selected = (BaseTreeModel) data.getSelectedItem();
if ("leaf".equals(selected .get("type").toString())) {
// create the Menu and set it to contextMenu of your tree
} else {
treePanel.setContextMenu(null);
}*
André.
I want to if it is possible to disable the auto-close MenuBar when I click on a MenuItem?
I have several MenuItem that are like checkboxes, so I can check more than one MenuItem and don't want my menu close everytime I checked one.
Thanks.
I was facing same problem and I will share with you my solution:
1) Create new class MyMenuItemWithCheckBox that extends the MenuItem.
In the constructor set element ID to (forexample) menuItemWIthCheckBox + Unique text.
this.getElement().setId("menuItemWithCheckBox_" + menuItemLabel);
2) Create new class MyMenuBar that extends the MenuBar.
Override the onBrowserEvent method by following:
Override
public void onBrowserEvent(Event event) {
if (DOM.eventGetType(event) == Event.ONCLICK && getSelectedItem().getElement().getId().contains("CheckBox")) {
Scheduler.get().scheduleFinally(new Scheduler.ScheduledCommand() {
#Override
public void execute() {
getSelectedItem().getScheduledCommand().execute();
}
});
event.stopPropagation();
} else {
super.onBrowserEvent(event);
}
}
Now scheduled command of MenuItem is always called, but in the case of your
menu checkBox item there is no close of a menubar.
I hope this help you, I spend more than day to create this solution. :-)
First, directly it's not possible because the popup-panel which displays the submenu is private in the MenuBar class.
Buuut, there is a way to do so ...
Simpley fetch the current MenuBar.java code out of googles code repository and include it in your eclipse gwt-project.
You don't have to change anything e.g. package deklaration or something. Just put your source in your project and it will simply replace the original MenuBar-class from the gwt-sdk during compilation (works also with hosted development mode).
Then you can simply set the property autoHide of the popup-Panel to false and the popup shouldn't disappear after clicking.
You can set hideOnClick to false on the menuItems
See here.
I have one small problem i.e. one textbox is their when click on the text box the popup is shows below the text box.The popup contains celltable
i write keypresslisner for textbox when i press Down And UP arrow the focus is set to be cellTable And also we still press down and up arrows its highlites the rows in celltable
anyone please tell me how to solve it...it's my request
When I wrote code like this:
box.addKeyPressHandler(new KeyPressHandler() {
#Override
public void onKeyPress(KeyPressEvent event) {
if (event.getNativeEvent().getKeyCode() == 38) {
celltable.setFocus(true);
} else if (event.getNativeEvent().getKeyCode() == 40) {
celltable.setFocus(true);
}
}
});
only the focus is goes to the cell table
The question is a little bit unclear, but I think you may be helped by FocusPanel:
http://google-web-toolkit.googlecode.com/svn/javadoc/2.0/com/google/gwt/user/client/ui/FocusPanel.html
Wrap your CellTable in this FocusPanel and you can do setFocus() on that instead. The FocusPanel has addKeyPressHandler(), so you can capture further keypress events there, also when your textbox has lost the focus.
If i have a GWT composite widget with three text boxes like for SSN, and i need to fire change event only when focus is lost from the widget as a whole, not from individual text boxes how to go about doing that?
If you want just the event when your whole widget loses focus (not the text boxes), then make the top level of your widget be a FocusPanel, and expose the events that it gives you.
You need to implement the Observer Pattern on your composite, and trigger a new notification everytime:
the focus is lost on a specific text box AND
the focus was not transferred to any of the other text boxes.
Couldn't you use a timer? On lost focus from a text box, start a 5ms (or something small) timer that when it hits, will check focus on all 3 TextBox instances. If none have focus, then you manually notify your observers. If one has focus, do nothing.
Put this in your Composite class:
private Map<Widget, Boolean> m_hasFocus = new HashMap<Widget, Boolean>();
And then add this to each one of your TextBox instances:
new FocusListener() {
public void onFocus(Widget sender) {
m_hasFocus.put(sender, Boolean.TRUE);
}
public void onLostFocus(Widget sender) {
m_hasFocus.put(sender, Boolean.FALSE);
new Timer() {
public void run() {
for (Boolean bool : m_hasFocus.values()) {
if (bool) { return; }
}
notifyObservers();
}
};
}
};