Examples of java.awt.Container.validate()

java.awt.Container.validate()
Validates this container and all of its subcomponents.
The validate method is used to cause a container to lay out its subcomponents again. It should be invoked when this container's subcomponents are modified (added to or removed from the container, or layout-related information changed) after the container has been displayed.
If this {@code Container} is not valid, this method invokesthe {@code validateTree} method and marks this {@code Container}as valid. Otherwise, no action is performed. @see #add(java.awt.Component) @see Component#invalidate @see javax.swing.JComponent#revalidate() @see #validateTree

        setMinimumSize(new Dimension(newWidth, (int) getMinimumSize().getHeight()));
        setPreferredSize(new Dimension(newWidth, (int) getPreferredSize().getHeight()));
        setMaximumSize(new Dimension(newWidth, (int) getMaximumSize().getHeight()));
        final Container p = getParent();
        if (p != null) {
            p.validate();
            p.repaint();
        }
    }


    /** Sets the height of the widget. */

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            label.setPreferredSize(new Dimension((int) label.getPreferredSize().getWidth(), newHeight));
            label.setMaximumSize(new Dimension((int) label.getMaximumSize().getWidth(), newHeight));
        }
        final Container p = getParent();
        if (p != null) {
            p.validate();
            p.repaint();
        }
    }


    final JComponent getJComponent() {

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            if (w instanceof Page) {
                ((Page) w).reset();
            }
            if (parent != null) {
                parent.remove(w.getJComponent());
                parent.validate();
                parent.repaint();
            }
        }


        //We now reset, the blockcanvas, the factory, and the renderableblocks

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            arrow.updateArrow();


            if (arrow.getParent() == null) {
                parentContainer.add(arrow);
            }
            parentContainer.validate();
            parentContainer.repaint();
            active = true;
        }
    }

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    public void mouseReleased(MouseEvent e) {
        if (createdRB != null) {
            if (!createdRB_dragged) {
                Container parent = createdRB.getParent();
                parent.remove(createdRB);
                parent.validate();
                parent.repaint();
            } else {
                //translate this e to a MouseEvent for createdRB
                MouseEvent newE = SwingUtilities.convertMouseEvent(this, e, createdRB);
                createdRB.mouseReleased(newE);

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        }


        Container parent = block.getParent();
        if (parent != null) {
            parent.remove(block);
            parent.validate();
        }


        block.setParentWidget(null);
        Workspace workspace = block.getWorkspace();
        workspace.notifyListeners(new WorkspaceEvent(workspace, widget, block.getBlockID(), WorkspaceEvent.BLOCK_REMOVED));

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        //remove from the current this.parent Container if non-null
        Container oldParent = this.getParent();
        if (oldParent != null) {
            oldParent.remove(this);
            oldParent.remove(arrow.arrow);
            oldParent.validate();
            oldParent.repaint();
        }
        //add this to newparent Container if non-null
        if (newparent != null) {
            if (constraints == null) {

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        }


        Container parent = block.getParent();
        if (parent != null) {
            parent.remove(block);
            parent.validate();
            parent.repaint();
            block.setParentWidget(null);
        }


        //fire to workspace that block was removed

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  }
  
  protected void removePanel () {
    Container parent = this.getParent();
    parent.remove(this);
    parent.validate();
    parent.repaint();
  }


  public void setName(String name){
    this.name = name;

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    //layout everything new
    Container parent = panel;
    while (parent.getParent() != null)
       parent = parent.getParent();
    //panel.validate();
    parent.validate();
    
  }

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