tablelayout.java

JSP+SQL编写的人力资源管理系统

    /**
     * Adjusts the width of a single column in this layout.  After calling this
     * method, the caller should request this layout manager to perform the
     * layout.  This can be done with the following code:
     *
     * <code>
     *     layout.layoutContainer(container);
     *     container.repaint();
     * </code>
     *
     * or
     *
     * <pre>
     *     window.pack()
     * </pre>
     *
     * If this is not done, the changes in the layout will not be seen until the
     * container is resized.
     *
     * @param i       zero-based index of column to set.  If this parameter is not
     *                valid, an ArrayOutOfBoundsException will be thrown.
     * @param size    width of the column.  This parameter cannot be null.
     *
     * @see getColumn
     */

    public void setColumn (int i, double size)
    {
        // Make sure size is valid
        if ((size < 0.0) &&
            (size != FILL) &&
            (size != PREFERRED) &&
            (size != MINIMUM))
            {
                size = 0.0;
            }

        // Copy new size
        columnSpec[i] = size;

        // Indicate that the cell sizes are not known
        dirty = true;
    }



    /**
     * Adjusts the height of a single row in this layout.  After calling this
     * method, the caller should request this layout manager to perform the
     * layout.  This can be done with the following code:
     *
     * <code>
     *     layout.layoutContainer(container);
     *     container.repaint();
     * </code>
     *
     * or
     *
     * <pre>
     *     window.pack()
     * </pre>
     *
     * If this is not done, the changes in the layout will not be seen until the
     * container is resized.
     *
     * @param i       zero-based index of row to set.  If this parameter is not
     *                valid, an ArrayOutOfBoundsException will be thrown.
     * @param size    height of the row.  This parameter cannot be null.
     *
     * @see getRow
     */

    public void setRow (int i, double size)
    {
        // Make sure size is valid
        if ((size < 0.0) &&
            (size != FILL) &&
            (size != PREFERRED) &&
            (size != MINIMUM))
            {
                size = 0.0;
            }

        // Copy new size
        rowSpec[i] = size;

        // Indicate that the cell sizes are not known
        dirty = true;
    }



    /**
     * Gets the sizes of columns in this layout.
     *
     * @return widths of each of the columns
     *
     * @see setColumn
     */

    public double [] getColumn ()
    {
        // Copy columns
        double column[] = new double[columnSpec.length];
        System.arraycopy (columnSpec, 0, column, 0, column.length);

        return column;
    }



    /**
     * Gets the height of a single row in this layout.
     *
     * @return height of the requested row
     *
     * @see setRow
     */

    public double [] getRow ()
    {
        // Copy rows
        double row[] = new double[rowSpec.length];
        System.arraycopy (rowSpec, 0, row, 0, row.length);

        return row;
    }



    /**
     * Gets the width of a single column in this layout.
     *
     * @param i    zero-based index of row to get.  If this parameter is not valid,
     *             an ArrayOutOfBoundsException will be thrown.
     *
     * @return width of the requested column
     *
     * @see setRow
     */

    public double getColumn (int i)
    {
        return columnSpec[i];
    }



    /**
     * Gets the sizes of a row in this layout.
     *
     * @param i    zero-based index of row to get.  If this parameter is not valid,
     *             an ArrayOutOfBoundsException will be thrown.
     *
     * @return height of each of the requested row
     *
     * @see setRow
     */

    public double getRow (int i)
    {
        return rowSpec[i];
    }



    /**
     * Gets the number of columns in this layout.
     *
     * @return the number of columns
     */

    public int getNumColumn ()
    {
        return columnSpec.length;
    }



    /**
     * Gets the number of rows in this layout.
     *
     * @return the number of rows
     */

    public int getNumRow ()
    {
        return rowSpec.length;
    }



    //******************************************************************************
    //** Insertion/Deletion methods                                              ***
    //******************************************************************************



    /**
     * Inserts a column in this layout.  All components to the right of the
     * insertion point are moved right one column.  The container will need to
     * be laid out after this method returns.  See <code>setColumn</code>.
     *
     * @param i       zero-based index at which to insert the column.
     * @param size    size of the column to be inserted
     *
     * @see setColumn
     * @see deleteColumn
     */

    public void insertColumn (int i, double size)
    {
        // Make sure position is valid
        if ((i < 0) || (i > columnSpec.length))
            throw new IllegalArgumentException
                ("Parameter i is invalid.  i = " + i + ".  Valid range is [0, " +
                 columnSpec.length + "].");

        // Make sure column size is valid
        if ((size < 0.0) &&
            (size != FILL) &&
            (size != PREFERRED) &&
            (size != MINIMUM))
            {
                size = 0.0;
            }

        // Copy columns
        double column[] = new double[columnSpec.length + 1];
        System.arraycopy (columnSpec, 0, column, 0, i);
        System.arraycopy (columnSpec, i, column, i + 1, columnSpec.length - i);

        // Insert column
        column[i] = size;
        columnSpec = column;

        // Move all components that are to the right of new row
        ListIterator iterator = list.listIterator(0);
    
        while (iterator.hasNext())
            {
                // Get next entry
                Entry entry = (Entry) iterator.next();

                // Is the first column to the right of the new column
                if (entry.col1 >= i)
                    // Move first column
                    entry.col1++;

                // Is the second column to the right of the new column
                if (entry.col2 >= i)
                    // Move second column
                    entry.col2++;
            }

        // Indicate that the cell sizes are not known
        dirty = true;
    }



    /**
     * Inserts a row in this layout.  All components below the insertion point
     * are moved down one row.  The container will need to be laid out after this
     * method returns.  See <code>setRow</code>.
     *
     * @param i       zero-based index at which to insert the column.
     * @param size    size of the row to be inserted
     *
     * @see setRow
     * @see deleteRow
     */

    public void insertRow (int i, double size)
    {
        // Make sure position is valid
        if ((i < 0) || (i > rowSpec.length))
            throw new IllegalArgumentException
                ("Parameter i is invalid.  i = " + i + ".  Valid range is [0, " +
                 rowSpec.length + "].");

        // Make sure row size is valid
        if ((size < 0.0) &&
            (size != FILL) &&
            (size != PREFERRED) &&
            (size != MINIMUM))
            {
                size = 0.0;
            }

        // Copy rows
        double row[] = new double[rowSpec.length + 1];
        System.arraycopy (rowSpec, 0, row, 0, i);
        System.arraycopy (rowSpec, i, row, i + 1, rowSpec.length - i);

        // Insert row
        row[i] = size;
        rowSpec = row;

        // Move all components that are below the new row
        ListIterator iterator = list.listIterator(0);
    
        while (iterator.hasNext())
            {
                // Get next entry
                Entry entry = (Entry) iterator.next();

                // Is the first row to the right of the new row
                if (entry.row1 >= i)
                    // Move first row
                    entry.row1++;

                // Is the second row to the right of the new row
                if (entry.row2 >= i)
                    // Move second row
                    entry.row2++;
            }

        // Indicate that the cell sizes are not known
        dirty = true;
    }



    /**
     * Deletes a column in this layout.  All components to the right of the
     * deletion point are moved left one column.  The container will need to
     * be laid out after this method returns.  See <code>setColumn</code>.
     *
     * @param i    zero-based index of column to delete
     *
     * @see setColumn
     * @see deleteColumn
     */

    public void deleteColumn (int i)
    {
        // Make sure position is valid
        if ((i < 0) || (i >= columnSpec.length))
            throw new IllegalArgumentException
                ("Parameter i is invalid.  i = " + i + ".  Valid range is [0, " +
                 (columnSpec.length - 1) + "].");

        // Copy columns
        double column[] = new double[columnSpec.length - 1];
        System.arraycopy (columnSpec, 0, column, 0, i);
        System.arraycopy (columnSpec, i + 1, column, i, columnSpec.length - i - 1);

        // Delete column
        columnSpec = column;

        // Move all components that are to the right of row deleted
        ListIterator iterator = list.listIterator(0);
    
        while (iterator.hasNext())
            {
                // Get next entry
                Entry entry = (Entry) iterator.next();

                // Is the first column to the right of the new column
                if (entry.col1 >= i)
                    // Move first column