[Fwd: JTable query!]

[terry.williams@xxxxxxxxxxxxx (Terry Williams)]

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Hi,
    if you want more than the default behaviour of the DefaultTableModel

I'm afraid you'll have to create your own TableModel. Not as hard as it
seems,

Here's a basic sample

public ReadOnlyTableModel extends AbstractTableModel
{
    // stuff here that initialises columnNames & data


    public boolean isCellEditable(int row, int col) { return false; }

    public Class getColumnClass(int c) { return getValueAt(0, c);

    public Object getValueAt(int row, int col)
    {
        return data[row][col];
        // or however you've stored your info if its a Vector of Vectors

it maybe something like this
        // Vector rowVec = (Vector)data.elementAt(row);
        // return rowVec.elementAt(col);
    }

    public int getRowCount() { return data.length; } // or data.size if
using vector of vectors

    public getColumnCount() { return columnNames.size(); }

    public getColumnName(int col) { return columnNames[col]; }

}

I think that's all that is needed for an AbstractTableModel, I'm sure
someone will correct me if I'm wrong.

This may seem complex for such a small change but the DefaultTableModel
is
a very simplistic model with little flexibility, the flexibility comes
from being able to plug in your own table model - see the Swing
documentation (and Tutorial) for a more in depth discussion of
AbstractTableModel.

BTW all swing components have detault "something" models associated with

them, if you write you own versions then you can begin to appreciate the

full power of swing. I get a little tired of people telling me that
swing
is useless and inflexible - you only get out of it what you put into it!

Terry

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Date: Tue, 30 Nov 1999 10:26:41 +0000
From: Terry Williams <terry.williams@xxxxxxxxxxxxx>
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To: Kakoli <kakoli@xxxxxxxxxxxx>
Subject: Re: JTable query!
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Kakoli wrote:

>     I am creating a JTable with DefaultTableModel and I am setting data
> through setDataVector. Then how can I make the table non-editable so
> that user cannot edit any cell in the table. There is a method
> isCellEditable which returns whether a cell is editable/not. But how do
> I set a cell to non-editable mode?
> Thanking in advance,
> Kakoli
>
> ---
> To unsubscribe, mail advanced-java-unsubscribe@xxxxxxxxxxxxxxxx
> To get help, mail advanced-java-help@xxxxxxxxxxxxxxxx

Hi,
    if you want more than the default behaviour of the DefaultTableModel
I'm afraid you'll have to create your own TableModel. Not as hard as it
seems,

Here's a basic sample

public ReadOnlyTableModel extends AbstractTableModel
{
    // stuff here that initialises columnNames & data


    public boolean isCellEditable(int row, int col) { return false; }

    public Class getColumnClass(int c) { return getValueAt(0, c);

    public Object getValueAt(int row, int col)
    {
        return data[row][col];
        // or however you've stored your info if its a Vector of Vectors
it maybe something like this
        // Vector rowVec = (Vector)data.elementAt(row);
        // return rowVec.elementAt(col);
    }

    public int getRowCount() { return data.length; } // or data.size if
using vector of vectors

    public getColumnCount() { return columnNames.size(); }

    public getColumnName(int col) { return columnNames[col]; }

}

I think that's all that is needed for an AbstractTableModel, I'm sure
someone will correct me if I'm wrong.

This may seem complex for such a small change but the DefaultTableModel is
a very simplistic model with little flexibility, the flexibility comes
from being able to plug in your own table model - see the Swing
documentation (and Tutorial) for a more in depth discussion of
AbstractTableModel.

BTW all swing components have detault "something" models associated with
them, if you write you own versions then you can begin to appreciate the
full power of swing. I get a little tired of people telling me that swing
is useless and inflexible - you only get out of it what you put into it!


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