I am using a Table Viewer with cell editors... one is a ComboxBox and the other one is a textcell editor... At runtime based on the selection in the combo box i want to change the other cell editor to either a texteditor or combobox... How can this be achieved??
When you make selection in one comobox editor, you update the underlying model element with the selection in combobox editor. You get the same element in below method getCellEditor(Object element). Depending on state of the element, you should either return TextCellEditor or ComboBoxCellEditor
org.eclipse.jface.viewers.EditingSupport
org.eclipse.jface.viewers.EditingSupport.getCellEditor(Object element)
you find lot of help online about how to use EditingSupport on TableViewer/TreeViewer
Related
Does anyone know how to disable a single row of a JFace TableViwer? I have a TableViwer constructed as follows:
TableViwer tv = new TableViwer(composite, SWT.NONE| SWT.FULL_SELECTION | SWT.BORDER);
tv can have many rows, but I am adding a particular unique row to the table dynamically(when an external button is clicked) and I need to make only that row disabled (grayed out and not selectable. Not selectable can also be achieved through existing handler, if there is no other option).
I searched in google but did not get much information. I am new to SWT/JFace, so any help would be appreciated.
You would have to do something in the selection listener to reject selection of the row.
To make the row gray you can make your Label Provider implement IColorProvider which lets you define the two methods:
public Color getForeground(Object element);
public Color getBackground(Object element);
which can color the row.
You could also use a label provider derived from StyledCellLabelProvider which lets you define more complex coloring.
I want to add a combobox in my grid, which would populate its store(of grid) as user provide the word.
If i am adding a custom abstract cell in to grid, I can able to add combobox as edittor to it. But when i am trying to use combobox cell (need to display text in a input tag/ Editable), Combobox is not adding to Grid.
Mean to say when I click on that column, it's not converting to combobox.
Tried with adding keyuphandler to addHandler method. But It's not coming to that handler.
I have a full search panel with listbox whose value are read from DB.when a item in listbox selected and search is made.If the results are not found the search panel is condensed (one more search panel) and in condensed search ,we can change the search criteria ,selected a different item in the list box .after changing the search criteria and if search is made ,when the full search panel appears,the value of the list box in full search panel should be same as the one changed/selected in the condensed search panel.
How can we accomplish this.
In simple - If i have two list boxes, load a list box and set the value of the listbox same the other listbox.If value of one listbox is changed, the other should be changed and the value of this listbox is set with the value selected in the previous one.
I would do the following
//you have something like this
ListBox listbox1;
ListBox listbox2;
//add a change handler
listbox1.addChangeHandler(new ChangeHandler() {
#Override
public void onChange(ChangeEvent event)
{
int index = listbox1.getSelectedIndex();
//do your update code here for listbox2
//like a listbox2.setSelectedIndex(index) or something
}
As far as I see its an easy implementation. Add a value change handler on the first listbox and do whatever you want in onChange method.
Regarding your panel need to be collapsed when there is no search results, you can always use vertical panel and set its height to 100% and add another panel to it or Use Dock Panel and add panels to south or best use disclosure panel and play around with it.
In GWT, I am using CellTable.
When you mouse over the CellTable it highlights each row.
How do change the behavior of the highlighting from the mouse over? Specifically:
change the color of highlighting
disable/enable
make it highlight only the specific grid item at your cursor (instead of the entire row)
( The current hack I have is to create a bunch of 1 column wide CellTables and add them to a VerticalPanel layout... creating the illusion that there is one CellTable and it highlights each grid according to your cursor. Is this bad? Why? performance? )
You will notice the CellTable uses a ResourceBundle, which means all the css styles get obfuscated ... this makes it more difficult to override styles.
The CellTable constructor will actually allow you to override the default ResourceBundle. So first, you need to create your own resource bundle like this:
public interface CellTableResources extends Resources {
public CellTableResources INSTANCE =
GWT.create(CellTableResources.class);
/**
* The styles used in this widget.
*/
#Source("CellTable.css")
CellTable.Style cellTableStyle();
}
Then you need to create your own CSS file. I recommend copying the CellTable style directly into your project and use that as a starting point. You can find it here:
http://code.google.com/p/google-web-toolkit/source/browse/trunk/user/src/com/google/gwt/user/cellview/client/CellTable.css
Make sure the style is injected first, and then you just feed it into the CellTable's constructor like this:
CellTableResources.INSTANCE.cellTableStyle().ensureInjected();
myCellTable = new CellTable<T>(Integer.MAX_VALUE,CellTableResources.INSTANCE);
Specifically, you'll want to tweak these styles:
cellTableKeyboardSelectedRow
cellTableKeyboardSelectedRowCell
cellTableSelectedRow
cellTableSelectedRowCell
cellTableKeyboardSelectedCell
It is important to note that the cell table differentiates between the 'selected row' and the 'keyboard selected row'. The selected row is the actual row selected (ie via SelectionModel). The keyboard selected row refers to what is highlighted when the user is pressing the up / down key, but does not mean the row is actually selected (if that makes sense).
I'll just add for number 2) on your list, you can simply do
cellList.setSkipRowHoverStyleUpdate(true)
That completely disables highlighting. There are also two more setSkip-functions on CellList related to hovering.
CellTable can be styled via CSS: How do I style a gwt 2.1 CellTables headers?
To disable highlighting just set the hover CSS property to nothing.
Possibly - try tweaking the .cellTableSelectedRow and .cellTableSelectedRowCell.
Here is the original CellTable.css: http://www.google.com/codesearch/p?hl=en#A1edwVHBClQ/user/src/com/google/gwt/user/cellview/client/CellTable.css&q=cellTableLastColumn&d=8
I am trying to create a simple GUI with table containing x and y coordinates of samples. I use treeview, and I want the cells of the table to be editable by user. Is it possible to specify if the cells should be editable directly in Glade in cellrenderer properties, or do I have to specify it in my code? I use Glade 3.6.1
I have just found out that unticking box "Editable" in the Tree View Editor when editing my treeview, enables me to specify whether the cells shall be editable or not, because if the box is unticked, the cells editable property is no longer connected with the model.
But if I run the program, cells are editable, but the value that I write inside disappears. How can I fix that? Why doesn't the cell store the value I type inside?
Thanks for any hint
For anyone dealing with a similar problem, I have solved it - whenever a cell is edited, appropriate record in the model needs to be changed, example code in Python:
cell.connect("edited", self.text_edited, model, column)
def text_edited( self, w, row, new_text, model, column)
model[row][column] = new_text
I found I had to do something just a little different, but I am also using Ubuntu's Quickly development environment. I did have to go into Glade and uncheck the "Editable" box in my cellrenderer, which then brought up a toggable "Yes/No" button. Then my code looks like:
#psuedo-code function definition
cellcolumn_widget.connect("edited", self.function, list_or_treestore, columnnumber)
#actual code, editing second column so column is passed as 1
self.builder.get_object("cellrenderer_chapter").connect("edited", self.cell_edited, self.builder.get_object("liststore_chapters"),1)
def cell_edited(self, widget, row, new_text, model, column):
model.set_value(model.get_iter(row),column,new_text)
for python GTK, by default, text in Gtk.CellRendererText widgets is not editable, you can change this by setting the value of the “editable” property to True:
renderer = Gtk.CellRendererText();
renderer.set_property("editable", True);
then you can connect to the “edited” signal and update your Gtk.TreeModel and/or database accordingly:
renderer.connect("edited", self.entry_edited);
def entry_edited(self, widget, path, text):
self.listStore[path][number_of_row] = text; # put the number_of_row to be edited
check this tutorial for more information python gtk 3 tutorial - CellRendererText