/**
* TTreeView implements a simple tree view.
*/
-public class TTreeView extends TWidget {
-
- /**
- * Vertical scrollbar.
- */
- private TVScroller vScroller;
-
- /**
- * Horizontal scrollbar.
- */
- private THScroller hScroller;
-
- /**
- * Get the horizontal scrollbar. This is used by TTreeItem.draw(), and
- * potentially subclasses.
- *
- * @return the horizontal scrollbar
- */
- public final THScroller getHScroller() {
- return hScroller;
- }
+public class TTreeView extends TScrollableWidget {
/**
* Root of the tree.
super(parent, x, y, width, height);
this.action = action;
+
+ vScroller = new TVScroller(this, getWidth() - 1, 0, getHeight() - 1);
+ hScroller = new THScroller(this, 0, getHeight() - 1, getWidth() - 1);
}
/**
}
}
- /**
- * Update (or instantiate) vScroller and hScroller.
- */
- private void updateScrollers() {
- // Setup vertical scroller
- if (vScroller == null) {
- vScroller = new TVScroller(this, getWidth() - 1, 0,
- getHeight() - 1);
- vScroller.setValue(0);
- vScroller.setTopValue(0);
- }
- vScroller.setX(getWidth() - 1);
- vScroller.setHeight(getHeight() - 1);
- vScroller.setBigChange(getHeight() - 1);
-
- // Setup horizontal scroller
- if (hScroller == null) {
- hScroller = new THScroller(this, 0, getHeight() - 1,
- getWidth() - 1);
- hScroller.setValue(0);
- hScroller.setLeftValue(0);
- }
- hScroller.setY(getHeight() - 1);
- hScroller.setWidth(getWidth() - 1);
- hScroller.setBigChange(getWidth() - 1);
- }
-
/**
* Resize text and scrollbars for a new width/height.
*/
- public void reflow() {
+ @Override
+ public void reflowData() {
int selectedRow = 0;
boolean foundSelectedRow = false;
- updateScrollers();
if (treeRoot == null) {
return;
}
}
if ((centerWindow) && (foundSelectedRow)) {
- if ((selectedRow < vScroller.getValue())
- || (selectedRow > vScroller.getValue() + getHeight() - 2)
+ if ((selectedRow < getVerticalValue())
+ || (selectedRow > getVerticalValue() + getHeight() - 2)
) {
- vScroller.setValue(selectedRow);
+ setVerticalValue(selectedRow);
centerWindow = false;
}
}
updatePositions();
// Rescale the scroll bars
- vScroller.setBottomValue(getChildren().size() - getHeight() + 1);
- if (vScroller.getBottomValue() < 0) {
- vScroller.setBottomValue(0);
+ setBottomValue(getChildren().size() - getHeight() + 1);
+ if (getBottomValue() < 0) {
+ setBottomValue(0);
}
- /*
- if (vScroller.getValue() > vScroller.getBottomValue()) {
- vScroller.setValue(vScroller.getBottomValue());
+ if (getVerticalValue() > getBottomValue()) {
+ setVerticalValue(getBottomValue());
}
- */
- hScroller.setRightValue(maxLineWidth - getWidth() + 3);
- if (hScroller.getRightValue() < 0) {
- hScroller.setRightValue(0);
+ setRightValue(maxLineWidth - getWidth() + 3);
+ if (getRightValue() < 0) {
+ setRightValue(0);
}
- /*
- if (hScroller.getValue() > hScroller.getRightValue()) {
- hScroller.setValue(hScroller.getRightValue());
+ if (getHorizontalValue() > getRightValue()) {
+ setHorizontalValue(getRightValue());
}
- */
getChildren().add(hScroller);
getChildren().add(vScroller);
}
return;
}
- int begin = vScroller.getValue();
+ int begin = getVerticalValue();
int topY = 0;
// As we walk the list we also adjust next/previous pointers,
@Override
public void onMouseDown(final TMouseEvent mouse) {
if (mouse.isMouseWheelUp()) {
- vScroller.decrement();
+ verticalDecrement();
} else if (mouse.isMouseWheelDown()) {
- vScroller.increment();
+ verticalIncrement();
} else {
// Pass to children
super.onMouseDown(mouse);
}
// Update the screen after the scrollbars have moved
- reflow();
+ reflowData();
}
/**
super.onMouseDown(mouse);
// Update the screen after any thing has expanded/contracted
- reflow();
+ reflowData();
}
/**
|| keypress.equals(kbCtrlLeft)
|| keypress.equals(kbAltLeft)
) {
- hScroller.decrement();
+ horizontalDecrement();
} else if (keypress.equals(kbShiftRight)
|| keypress.equals(kbCtrlRight)
|| keypress.equals(kbAltRight)
) {
- hScroller.increment();
+ horizontalIncrement();
} else if (keypress.equals(kbShiftUp)
|| keypress.equals(kbCtrlUp)
|| keypress.equals(kbAltUp)
) {
- vScroller.decrement();
+ verticalDecrement();
} else if (keypress.equals(kbShiftDown)
|| keypress.equals(kbCtrlDown)
|| keypress.equals(kbAltDown)
) {
- vScroller.increment();
+ verticalIncrement();
} else if (keypress.equals(kbShiftPgUp)
|| keypress.equals(kbCtrlPgUp)
|| keypress.equals(kbAltPgUp)
) {
- vScroller.bigDecrement();
+ bigVerticalDecrement();
} else if (keypress.equals(kbShiftPgDn)
|| keypress.equals(kbCtrlPgDn)
|| keypress.equals(kbAltPgDn)
) {
- vScroller.bigIncrement();
+ bigVerticalIncrement();
} else if (keypress.equals(kbHome)) {
- vScroller.toTop();
+ toTop();
} else if (keypress.equals(kbEnd)) {
- vScroller.toBottom();
+ toBottom();
} else if (keypress.equals(kbEnter)) {
if (selectedItem != null) {
dispatch();
if (selectedItem.keyboardPrevious != null) {
setSelected(selectedItem.keyboardPrevious);
if (oldItem.getY() == 0) {
- vScroller.decrement();
+ verticalDecrement();
}
}
}
if (selectedItem.keyboardNext != null) {
setSelected(selectedItem.keyboardNext);
if (oldItem.getY() == getHeight() - 2) {
- vScroller.increment();
+ verticalIncrement();
}
}
}
}
// Update the screen after any thing has expanded/contracted
- reflow();
+ reflowData();
}
}