| 1 | // Copyright 2004-2007 Jean-Francois Poilpret |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package net.sourceforge.hivegui.docking; |
| 16 | |
| 17 | import java.awt.Component; |
| 18 | import java.awt.Insets; |
| 19 | import java.util.Set; |
| 20 | |
| 21 | import javax.swing.JTabbedPane; |
| 22 | import javax.swing.UIManager; |
| 23 | import javax.swing.event.ChangeListener; |
| 24 | |
| 25 | import org.flexdock.docking.activation.ActiveDockableListener; |
| 26 | import org.flexdock.docking.event.TabbedDragListener; |
| 27 | import org.flexdock.docking.event.hierarchy.DockingPortTracker; |
| 28 | import org.flexdock.util.LookAndFeelSettings; |
| 29 | import org.flexdock.view.View; |
| 30 | import org.flexdock.view.Viewport; |
| 31 | |
| 32 | // Special viewport that must be used in lieu of Viewport (everywhere) in order |
| 33 | // to allow one (or more) empty region. |
| 34 | // This port accepts in its center only views which content implement a special |
| 35 | // marker interface. Those special views are accepted no where else. |
| 36 | public class EmptyableViewport extends Viewport |
| 37 | { |
| 38 | static public final String EMPTY_VIEW_ID = "EMPTY_VIEW"; |
| 39 | |
| 40 | public EmptyableViewport() |
| 41 | { |
| 42 | this(EmptyableViewMarker.class); |
| 43 | } |
| 44 | |
| 45 | public EmptyableViewport(Class<?> viewMarker) |
| 46 | { |
| 47 | _viewMarker = viewMarker; |
| 48 | } |
| 49 | |
| 50 | public boolean isEmptyablePort() |
| 51 | { |
| 52 | return isMarkedView((View) getComponent(CENTER_REGION)); |
| 53 | } |
| 54 | |
| 55 | protected boolean isMarkedView(View view) |
| 56 | { |
| 57 | if (view != null && view.getContentPane() != null) |
| 58 | { |
| 59 | return _viewMarker.isAssignableFrom(view.getContentPane().getClass()); |
| 60 | } |
| 61 | else |
| 62 | { |
| 63 | return false; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | @Override protected JTabbedPane createTabbedPane() |
| 68 | { |
| 69 | Insets oldInsets = UIManager.getInsets(LookAndFeelSettings.TAB_PANE_BORDER_INSETS); |
| 70 | int tabPlacement = getInitTabPlacement(); |
| 71 | int edgeInset = LookAndFeelSettings.getTabEdgeInset(tabPlacement); |
| 72 | |
| 73 | Insets newInsets = new Insets(0, 2, 0, 2); |
| 74 | switch (tabPlacement) |
| 75 | { |
| 76 | case JTabbedPane.LEFT: |
| 77 | newInsets.left = edgeInset >= 0 ? edgeInset : oldInsets.left; |
| 78 | break; |
| 79 | |
| 80 | case JTabbedPane.BOTTOM: |
| 81 | newInsets.bottom = edgeInset >= 0 ? edgeInset : oldInsets.bottom; |
| 82 | break; |
| 83 | |
| 84 | case JTabbedPane.RIGHT: |
| 85 | newInsets.right = edgeInset >= 0 ? edgeInset : oldInsets.right; |
| 86 | break; |
| 87 | |
| 88 | case JTabbedPane.TOP: |
| 89 | default: |
| 90 | newInsets.top = edgeInset >= 0 ? edgeInset : oldInsets.top; |
| 91 | break; |
| 92 | } |
| 93 | |
| 94 | UIManager.put(LookAndFeelSettings.TAB_PANE_BORDER_INSETS, newInsets); |
| 95 | JTabbedPane pane = new JTabbedPane(); |
| 96 | pane.setTabPlacement(tabPlacement); |
| 97 | UIManager.put(LookAndFeelSettings.TAB_PANE_BORDER_INSETS, oldInsets); |
| 98 | |
| 99 | TabbedDragListener tdl = new TabbedDragListener(); |
| 100 | pane.addMouseListener(tdl); |
| 101 | pane.addMouseMotionListener(tdl); |
| 102 | |
| 103 | pane.addChangeListener(ActiveDockableListener.getInstance()); |
| 104 | |
| 105 | if (_listener != null) |
| 106 | { |
| 107 | // Listen to changes of current selection in tab |
| 108 | pane.addChangeListener(_listener); |
| 109 | } |
| 110 | return pane; |
| 111 | } |
| 112 | |
| 113 | @Override public boolean isDockingAllowed(Component comp, String region) |
| 114 | { |
| 115 | boolean allow = super.isDockingAllowed(comp, region); |
| 116 | if (allow && isInitDone()) |
| 117 | { |
| 118 | // Special check for board drawing areas |
| 119 | allow = isEmptyablePort() && CENTER_REGION.equals(region); |
| 120 | if (!isMarkedView((View) comp)) |
| 121 | { |
| 122 | allow = !allow; |
| 123 | } |
| 124 | } |
| 125 | return allow; |
| 126 | } |
| 127 | |
| 128 | static public void setInitDone() |
| 129 | { |
| 130 | _initDone = true; |
| 131 | } |
| 132 | |
| 133 | static protected boolean isInitDone() |
| 134 | { |
| 135 | return _initDone; |
| 136 | } |
| 137 | |
| 138 | @SuppressWarnings("unchecked") |
| 139 | static public EmptyableViewport getEmptyablePort() |
| 140 | { |
| 141 | Set<EmptyableViewport> ports = DockingPortTracker.getDockingPorts(); |
| 142 | for (EmptyableViewport port: ports) |
| 143 | { |
| 144 | if (port.isEmptyablePort()) |
| 145 | { |
| 146 | return port; |
| 147 | } |
| 148 | } |
| 149 | return null; |
| 150 | } |
| 151 | |
| 152 | public ChangeListener getListener() |
| 153 | { |
| 154 | return _listener; |
| 155 | } |
| 156 | |
| 157 | public void setListener(ChangeListener listener) |
| 158 | { |
| 159 | _listener = listener; |
| 160 | } |
| 161 | |
| 162 | protected final Class<?> _viewMarker; |
| 163 | protected ChangeListener _listener; |
| 164 | static private boolean _initDone = false; |
| 165 | } |