mirror of
https://github.com/webmin/webmin.git
synced 2025-07-21 23:40:34 +00:00
579 lines
12 KiB
Java
579 lines
12 KiB
Java
// MultiColumn
|
|
// A List box that supports multiple columns.
|
|
import java.awt.*;
|
|
import java.util.Vector;
|
|
|
|
public class MultiColumn extends BorderPanel implements CbScrollbarCallback
|
|
{
|
|
MultiColumnCallback callback; // what to call back to
|
|
String title[]; // column titles
|
|
boolean adjustable = true;
|
|
boolean drawlines = true;
|
|
Color colors[][] = null;
|
|
boolean enabled = true;
|
|
boolean multiselect = false;
|
|
int cpos[]; // column x positions
|
|
float cwidth[]; // proportional column widths
|
|
Vector list[]; // columns of the list
|
|
CbScrollbar sb; // scrollbar at the right side
|
|
int width, height; // size, minus the scrollbar
|
|
Insets in; // used space around the border
|
|
int sbwidth; // width of the scrollbar
|
|
int th; // height of title bar
|
|
Image bim; // backing image
|
|
Graphics bg; // backing graphics
|
|
Font font = new Font("timesRoman", Font.PLAIN, 12);
|
|
FontMetrics fnm; // drawing font size
|
|
int coldrag = -1; // column being resized
|
|
int sel = -1; // selected row
|
|
int sels[] = new int[0]; // all selected rows
|
|
int top = 0; // first row displayed
|
|
long last; // last mouse click time
|
|
int rowh = 16; // row height
|
|
Event last_event; // last event that triggered callback
|
|
int sortcol; // Column currently being sorted
|
|
int sortdir; // Sort direction (0=none, 1=up, 2=down)
|
|
|
|
// Create a new list with the given column titles
|
|
MultiColumn(String t[])
|
|
{
|
|
super(3, new Color(50,50,50), new Color(220,220,220));
|
|
title = new String[t.length];
|
|
for(int i=0; i<t.length; i++)
|
|
title[i] = t[i];
|
|
list = new Vector[t.length];
|
|
for(int i=0; i<t.length; i++)
|
|
list[i] = new Vector();
|
|
cwidth = new float[t.length];
|
|
for(int i=0; i<t.length; i++)
|
|
cwidth[i] = 1.0f/t.length;
|
|
cpos = new int[t.length+1];
|
|
setLayout(null);
|
|
sb = new CbScrollbar(CbScrollbar.VERTICAL, this);
|
|
add(sb);
|
|
}
|
|
|
|
// Create a new list that calls back to the given object on
|
|
// single or double clicks.
|
|
MultiColumn(String t[], MultiColumnCallback c)
|
|
{
|
|
this(t);
|
|
callback = c;
|
|
}
|
|
|
|
// addItem
|
|
// Add a row to the list
|
|
void addItem(Object item[])
|
|
{
|
|
for(int i=0; i<title.length; i++)
|
|
list[i].addElement(item[i]);
|
|
repaint();
|
|
compscroll();
|
|
}
|
|
|
|
// addItems
|
|
// Add several rows to the list
|
|
void addItems(Object item[][])
|
|
{
|
|
for(int i=0; i<item.length; i++)
|
|
for(int j=0; j<title.length; j++)
|
|
list[j].addElement(item[i][j]);
|
|
repaint();
|
|
compscroll();
|
|
}
|
|
|
|
// modifyItem
|
|
// Changes one row of the table
|
|
void modifyItem(Object item[], int row)
|
|
{
|
|
for(int i=0; i<title.length; i++)
|
|
list[i].setElementAt(item[i], row);
|
|
repaint();
|
|
compscroll();
|
|
}
|
|
|
|
// getItem
|
|
// Returns the contents of a given row
|
|
Object []getItem(int n)
|
|
{
|
|
Object r[] = new Object[title.length];
|
|
for(int i=0; i<title.length; i++)
|
|
r[i] = list[i].elementAt(n);
|
|
return r;
|
|
}
|
|
|
|
// selected
|
|
// Return the most recently selected row
|
|
int selected()
|
|
{
|
|
return sel;
|
|
}
|
|
|
|
// select
|
|
// Select some row
|
|
void select(int s)
|
|
{
|
|
sel = s;
|
|
sels = new int[1];
|
|
sels[0] = s;
|
|
repaint();
|
|
}
|
|
|
|
// select
|
|
// Select multiple rows
|
|
void select(int s[])
|
|
{
|
|
if (s.length == 0) {
|
|
sel = -1;
|
|
sels = new int[0];
|
|
}
|
|
else {
|
|
sel = s[0];
|
|
sels = s;
|
|
}
|
|
repaint();
|
|
}
|
|
|
|
// allSelected
|
|
// Returns all the selected rows
|
|
int[] allSelected()
|
|
{
|
|
return sels;
|
|
}
|
|
|
|
// scrollto
|
|
// Scroll to make some row visible
|
|
void scrollto(int s)
|
|
{
|
|
int r = rows();
|
|
if (s < top || s >= top+r) {
|
|
top = s-1;
|
|
if (top > list[0].size() - r)
|
|
top = list[0].size() - r;
|
|
sb.setValue(top);
|
|
repaint();
|
|
}
|
|
}
|
|
|
|
// deleteItem
|
|
// Remove one row from the list
|
|
void deleteItem(int n)
|
|
{
|
|
for(int i=0; i<title.length; i++)
|
|
list[i].removeElementAt(n);
|
|
if (n == sel) {
|
|
// De-select deleted file
|
|
sel = -1;
|
|
}
|
|
for(int i=0; i<sels.length; i++) {
|
|
if (sels[i] == n) {
|
|
// Remove from selection list
|
|
int nsels[] = new int[sels.length-1];
|
|
if (nsels.length > 0) {
|
|
System.arraycopy(sels, 0, nsels, 0, i);
|
|
System.arraycopy(sels, i+1, nsels, i,
|
|
nsels.length-i);
|
|
sel = nsels[0];
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
repaint();
|
|
compscroll();
|
|
}
|
|
|
|
// clear
|
|
// Remove everything from the list
|
|
void clear()
|
|
{
|
|
for(int i=0; i<title.length; i++)
|
|
list[i].removeAllElements();
|
|
sel = -1;
|
|
sels = new int[0];
|
|
top = 0;
|
|
repaint();
|
|
sb.setValues(0, 1, 0);
|
|
}
|
|
|
|
// setWidths
|
|
// Set the proportional widths of each column
|
|
void setWidths(float w[])
|
|
{
|
|
for(int i=0; i<title.length; i++)
|
|
cwidth[i] = w[i];
|
|
respace();
|
|
repaint();
|
|
}
|
|
|
|
/**Turns on or off the user's ability to adjust column widths
|
|
* @param a Can adjust or not?
|
|
*/
|
|
void setAdjustable(boolean a)
|
|
{
|
|
adjustable = a;
|
|
}
|
|
|
|
/**Turns on or off the drawing of column lines
|
|
* @param d Draw lines or not?
|
|
*/
|
|
void setDrawLines(boolean d)
|
|
{
|
|
drawlines = d;
|
|
}
|
|
|
|
/**Sets the array of colors used to draw text items.
|
|
* @param c The color array (in row/column order), or null to
|
|
* use the default
|
|
*/
|
|
void setColors(Color c[][])
|
|
{
|
|
colors = c;
|
|
repaint();
|
|
}
|
|
|
|
// Turns on or off multi-row selection with ctrl and shift
|
|
void setMultiSelect(boolean m)
|
|
{
|
|
multiselect = m;
|
|
}
|
|
|
|
// Enables the entire list
|
|
public void enable()
|
|
{
|
|
enabled = true;
|
|
sb.enable();
|
|
repaint();
|
|
}
|
|
|
|
// Disables the entire list
|
|
public void disable()
|
|
{
|
|
enabled = false;
|
|
sb.disable();
|
|
repaint();
|
|
}
|
|
|
|
// Sets or turns off the sort indication arrow for a column
|
|
// Direction 0 = None, 1 = Up arrow, 2 = Down arrow
|
|
public void sortingArrow(int col, int dir)
|
|
{
|
|
sortcol = col;
|
|
sortdir = dir;
|
|
repaint();
|
|
}
|
|
|
|
// reshape
|
|
// Called when this component gets resized
|
|
public void reshape(int nx, int ny, int nw, int nh)
|
|
{
|
|
if (nw != width+sbwidth || nh != height) {
|
|
in = insets();
|
|
sbwidth = sb.minimumSize().width;
|
|
width = nw-sbwidth - (in.left + in.right);
|
|
height = nh - (in.top + in.bottom);
|
|
sb.reshape(width+in.left, in.top, sbwidth, height);
|
|
respace();
|
|
|
|
// Force creation of a new backing image and re-painting
|
|
bim = null;
|
|
repaint();
|
|
compscroll();
|
|
}
|
|
super.reshape(nx, ny, nw, nh);
|
|
}
|
|
|
|
// respace
|
|
// Compute pixel column widths from proportional widths
|
|
void respace()
|
|
{
|
|
cpos[0] = 0;
|
|
for(int i=0; i<title.length; i++)
|
|
cpos[i+1] = cpos[i] + (int)(width*cwidth[i]);
|
|
}
|
|
|
|
// paint
|
|
// Blit the backing image to the front
|
|
public void paint(Graphics g)
|
|
{
|
|
super.paint(g);
|
|
if (bim == null) {
|
|
// This is the first rendering
|
|
bim = createImage(width, height);
|
|
bg = bim.getGraphics();
|
|
bg.setFont(font);
|
|
fnm = bg.getFontMetrics();
|
|
th = fnm.getHeight() + 4;
|
|
render();
|
|
compscroll();
|
|
}
|
|
g.drawImage(bim, in.left, in.top, this);
|
|
}
|
|
|
|
// update
|
|
// Called sometime after repaint()
|
|
public void update(Graphics g)
|
|
{
|
|
if (fnm != null) {
|
|
render();
|
|
paint(g);
|
|
}
|
|
}
|
|
|
|
// render
|
|
// Re-draw the list into the backing image
|
|
void render()
|
|
{
|
|
int fh = fnm.getHeight(), // useful font metrics
|
|
fd = fnm.getDescent(),
|
|
fa = fnm.getAscent();
|
|
int bot = Math.min(top+rows()-1, list[0].size()-1);
|
|
|
|
// Clear title section and list
|
|
bg.setColor(Color.lightGray);
|
|
bg.fillRect(0, 0, width, th);
|
|
bg.setColor(Color.white);
|
|
bg.fillRect(0, th, width, height-th);
|
|
Color lighterGray = new Color(Color.lightGray.getRed() + 20,
|
|
Color.lightGray.getGreen() + 20,
|
|
Color.lightGray.getBlue() + 20);
|
|
|
|
if (enabled) {
|
|
// Mark the selected rows
|
|
for(int i=0; i<sels.length; i++) {
|
|
if (sels[i] >= top && sels[i] <= bot) {
|
|
bg.setColor(sels[i] == sel ? Color.lightGray
|
|
: lighterGray);
|
|
bg.fillRect(0, th+(sels[i]-top)*rowh,
|
|
width, rowh);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Draw each column
|
|
for(int i=0; i<title.length; i++) {
|
|
int x = cpos[i], w = cpos[i+1]-x-1;
|
|
|
|
// Column title
|
|
bg.setColor(Color.white);
|
|
bg.drawLine(x, 0, x+w, 0);
|
|
bg.drawLine(x, 1, x+w-1, 1);
|
|
bg.drawLine(x, 0, x, th-1);
|
|
bg.drawLine(x+1, 0, x+1, th-2);
|
|
bg.setColor(Color.black);
|
|
bg.drawLine(x, th-1, x+w, th-1);
|
|
bg.drawLine(x, th-2, x+w-1, th-2);
|
|
bg.drawLine(x+w, th-1, x+w, 0);
|
|
bg.drawLine(x+w-1, th-1, x+w-1, 1);
|
|
int tw = fnm.stringWidth(title[i]);
|
|
if (tw < w-6)
|
|
bg.drawString(title[i], x+(w-tw)/2, th-fd-2);
|
|
|
|
// Sorting arrow
|
|
int as = th-8;
|
|
if (sortcol == i && sortdir == 1) {
|
|
bg.setColor(Color.white);
|
|
bg.drawLine(x+4, th-5, x+4+as, th-5);
|
|
bg.drawLine(x+4+as, th-5, x+4+as/2, th-5-as);
|
|
bg.setColor(Color.black);
|
|
bg.drawLine(x+4+as/2, th-5-as, x+4, th-5);
|
|
}
|
|
else if (sortcol == i && sortdir == 2) {
|
|
bg.setColor(Color.white);
|
|
bg.drawLine(x+4+as/2, th-5, x+4+as, th-5-as);
|
|
bg.setColor(Color.black);
|
|
bg.drawLine(x+4, th-5-as, x+4+as, th-5-as);
|
|
bg.drawLine(x+4, th-5-as, x+4+as/2, th-5);
|
|
}
|
|
|
|
// Column items
|
|
if (drawlines) {
|
|
bg.setColor(Color.lightGray);
|
|
bg.drawLine(x+w-1, th, x+w-1, height);
|
|
bg.setColor(Color.black);
|
|
bg.drawLine(x+w, th, x+w, height);
|
|
}
|
|
for(int j=top; j<=bot; j++) {
|
|
Object o = list[i].elementAt(j);
|
|
if (o instanceof String) {
|
|
// Render string in column
|
|
String s = (String)o;
|
|
while(fnm.stringWidth(s) > w-3)
|
|
s = s.substring(0, s.length()-1);
|
|
if (!enabled)
|
|
bg.setColor(Color.lightGray);
|
|
else if (colors != null)
|
|
bg.setColor(colors[j][i]);
|
|
bg.drawString(s, x+1, th+(j+1-top)*rowh-fd);
|
|
}
|
|
else if (o instanceof Image) {
|
|
// Render image in column
|
|
Image im = (Image)o;
|
|
bg.drawImage(im, x+1, th+(j-top)*rowh, this);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// mouseDown
|
|
// Select a list item or a column to drag
|
|
public boolean mouseDown(Event e, int x, int y)
|
|
{
|
|
if (!enabled) {
|
|
return true;
|
|
}
|
|
x -= in.left;
|
|
y -= in.top;
|
|
coldrag = -1;
|
|
if (y < th) {
|
|
// Click in title bar
|
|
for(int i=0; i<title.length; i++) {
|
|
if (adjustable && i > 0 && Math.abs(cpos[i] - x) < 3) {
|
|
// clicked on a column separator
|
|
coldrag = i;
|
|
}
|
|
else if (x >= cpos[i] && x < cpos[i+1]) {
|
|
// clicked in a title
|
|
callback.headingClicked(this, i);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
// Item chosen from list
|
|
int row = (y-th)/rowh + top;
|
|
if (row < list[0].size()) {
|
|
// Double-click?
|
|
boolean dclick = false;
|
|
if (e.when-last < 1000 && sel == row)
|
|
dclick = true;
|
|
else
|
|
last = e.when;
|
|
|
|
if (e.shiftDown() && multiselect && sel != -1) {
|
|
// Select all from last selection to this one
|
|
int zero = sels[0];
|
|
if (zero < row) {
|
|
sels = new int[row-zero+1];
|
|
for(int i=zero; i<=row; i++)
|
|
sels[i-zero] = i;
|
|
}
|
|
else {
|
|
sels = new int[zero-row+1];
|
|
for(int i=zero; i>=row; i--)
|
|
sels[zero-i] = i;
|
|
}
|
|
}
|
|
else if (e.controlDown() && multiselect) {
|
|
// Add this one to selection
|
|
int nsels[] = new int[sels.length + 1];
|
|
System.arraycopy(sels, 0, nsels, 0,sels.length);
|
|
nsels[sels.length] = row;
|
|
sels = nsels;
|
|
}
|
|
else {
|
|
// Select one row only, and de-select others
|
|
sels = new int[1];
|
|
sels[0] = row;
|
|
}
|
|
sel = row;
|
|
repaint();
|
|
last_event = e;
|
|
if (callback != null) {
|
|
// Callback the right function
|
|
if (dclick) callback.doubleClick(this, row);
|
|
else callback.singleClick(this, row);
|
|
}
|
|
else {
|
|
// Send an event
|
|
getParent().postEvent(
|
|
new Event(this,
|
|
Event.ACTION_EVENT,
|
|
dclick?"Double":"Single"));
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// mouseDrag
|
|
// If a column is selected, change it's width
|
|
public boolean mouseDrag(Event e, int x, int y)
|
|
{
|
|
if (!enabled) {
|
|
return true;
|
|
}
|
|
x -= in.left;
|
|
y -= in.top;
|
|
if (coldrag != -1) {
|
|
if (x > cpos[coldrag-1]+3 && x < cpos[coldrag+1]-3) {
|
|
cpos[coldrag] = x;
|
|
cwidth[coldrag-1] = (cpos[coldrag]-cpos[coldrag-1]) /
|
|
(float)width;
|
|
cwidth[coldrag] = (cpos[coldrag+1]-cpos[coldrag]) /
|
|
(float)width;
|
|
repaint();
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public void moved(CbScrollbar s, int v)
|
|
{
|
|
moving(s, v);
|
|
}
|
|
|
|
public void moving(CbScrollbar s, int v)
|
|
{
|
|
top = sb.getValue();
|
|
compscroll();
|
|
repaint();
|
|
}
|
|
|
|
// compscroll
|
|
// Re-compute the size of the scrollbar
|
|
private void compscroll()
|
|
{
|
|
if (fnm == null)
|
|
return; // not visible
|
|
int r = rows();
|
|
int c = list[0].size() - r;
|
|
sb.setValues(top, r==0?1:r, list[0].size());
|
|
}
|
|
|
|
// rows
|
|
// Returns the number of rows visible in the list
|
|
private int rows()
|
|
{
|
|
return Math.min(height/rowh - 1, list[0].size());
|
|
}
|
|
|
|
public Dimension minimumSize()
|
|
{
|
|
return new Dimension(400, 100);
|
|
}
|
|
|
|
public Dimension preferredSize()
|
|
{
|
|
return minimumSize();
|
|
}
|
|
}
|
|
|
|
// MultiColumnCallback
|
|
// Objects implementing this interface can be passed to the MultiColumn
|
|
// class, to have their singleClick() and doubleClick() functions called in
|
|
// response to single or double click in the list.
|
|
interface MultiColumnCallback
|
|
{
|
|
// singleClick
|
|
// Called on a single click on a list item
|
|
void singleClick(MultiColumn list, int num);
|
|
|
|
// doubleClick
|
|
// Called upon double-clicking on a list item
|
|
void doubleClick(MultiColumn list, int num);
|
|
|
|
// headingClicked
|
|
// Called when a column heading is clicked on
|
|
void headingClicked(MultiColumn list, int col);
|
|
}
|
|
|