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Copy pathContainer.java
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213 lines (186 loc) · 4.6 KB
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package javaforce.ui;
/** Container - contains other Components.
*
* @author pquiring
*/
import java.util.*;
import javaforce.*;
public abstract class Container extends Component {
public ArrayList<Component> children;
public Component focus;
public Dimension minSize = new Dimension();
public Container() {
children = new ArrayList<>();
setConsumer(false);
}
public boolean isContainer() {
return true;
}
public void add(Component child) {
children.add(child);
child.setParent(this);
}
public void remove(Component child) {
children.remove(child);
child.setParent(null);
}
public Component getChild(int idx) {
return children.get(idx);
}
public int getChildCount() {
return children.size();
}
public Component[] getChildren() {
return children.toArray(new Component[children.size()]);
}
public <T> T[] getChildren(T[] array) {
return children.toArray(array);
}
public abstract Dimension getMinSize();
/** Lays out components. */
public abstract void layout(LayoutMetrics metrics);
public void render(Image output) {
super.render(output);
for(int layer=0;layer<=1;layer++) {
for(Component child : children) {
if (child.getLayer() != layer) continue;
if (!child.isVisible()) continue;
child.render(output);
}
}
}
private Component firstFocus() {
for(Component child : children) {
if (child.isFocusable()) {
return child;
}
if (child.isContainer()) {
Component c = ((Container)child).firstFocus();
if (c != null) return c;
}
}
return null;
}
private static boolean found;
private Component nextFocus(Component focus) {
for(Component child : children) {
if (!found) {
if (child == focus) {
found = true;
} else {
if (child.isContainer()) {
Component c = ((Container)child).nextFocus(focus);
if (c != null) return c;
}
}
continue;
}
if (child.isFocusable()) {
return child;
}
if (child.isContainer()) {
Component c = ((Container)child).nextFocus(focus);
if (c != null) return c;
}
}
return null;
}
private void nextFocus() {
if (focus != null) {
focus.onBlur();
found = false;
focus = nextFocus(focus);
if (focus == null) {
focus = firstFocus();
}
} else {
focus = firstFocus();
}
if (focus != null) {
focus.onFocus();
}
}
public void setFocus(Component child) {
if (focus != null) {
focus.onBlur();
}
focus = child;
focus.onFocus();
}
public void keyTyped(char ch) {
if (focus != null) {
focus.keyTyped(ch);
}
}
public void keyPressed(int key) {
switch (key) {
case KeyCode.VK_TAB:
nextFocus();
break;
}
if (focus != null) {
focus.keyPressed(key);
}
}
public void keyReleased(int key) {
if (focus != null) {
focus.keyReleased(key);
}
}
public void mouseMove(int x, int y) {
super.mouseMove(x, y);
Point pt = getMousePosition();
for(int layer=1;layer>=0;layer--) {
for(Component child : children) {
if (child.getLayer() != layer) continue;
if (!child.isVisible()) continue;
if (child.isInside(pt)) {
child.mouseMove(x, y);
}
}
}
}
public void mouseDown(int button) {
Point pt = getMousePosition();
super.mouseDown(button);
for(int layer=1;layer>=0;layer--) {
for(Component child : children) {
if (child.getLayer() != layer) continue;
if (!child.isVisible()) continue;
if (child.isInside(pt)) {
child.mouseDown(button);
if (child.isConsumer()) {
return;
}
}
}
}
}
public void mouseUp(int button) {
Point pt = getMousePosition();
super.mouseUp(button);
for(int layer=1;layer>=0;layer--) {
for(Component child : children) {
if (child.getLayer() != layer) continue;
if (!child.isVisible()) continue;
if (child.isInside(pt)) {
child.mouseUp(button);
if (child.isConsumer()) return;
}
}
}
}
public void mouseScroll(int dx, int dy) {
Point pt = getMousePosition();
super.mouseScroll(dx, dy);
for(int layer=0;layer<=1;layer++) {
for(Component child : children) {
if (child.getLayer() != layer) continue;
if (!child.isVisible()) continue;
if (child.isInside(pt)) {
child.mouseScroll(dx, dy);
}
}
}
}
}