skrueger/swing/DialogManager.java

package skrueger.swing;

import java.awt.Component;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.HashMap;
import java.util.HashSet;

import javax.swing.JDialog;

import org.apache.log4j.Logger;

public abstract class DialogManager<KEY, DIALOG extends JDialog> extends
                JDialog {

        public abstract class FactoryInterface {

                public abstract DIALOG create();

        }

        final Logger LOGGER = Logger.getLogger(DialogManager.class);

        private HashMap<KEY, DIALOG> dialogCache = new HashMap<KEY, DIALOG>();

        public DialogManager() {
        }

        /**
         * This will be done with every dialog that an instance is required for.
         * 
         * @param dialog
         * @return
         */
        protected DIALOG bringup(DIALOG dialog) {
                if (!dialog.isVisible())
                        dialog.setVisible(true);
                dialog.toFront();

                return dialog;
        }

        public abstract DIALOG getInstanceFor(final KEY key, final Component owner,
                        final Object... constArgs);

        /**
         * @return Is there an open/visible dialog for the given layer id?
         */
        public boolean isVisibleFor(KEY key) {
                return dialogCache.containsKey(key) && dialogCache.get(key).isVisible();
        }

        /**
         * Will dispose any dialog that is registered to the given parent
         * {@link Component}
         * 
         * @param parent
         */
        public void disposeInstanceForParent(final Component parent) {

                final HashMap<KEY, JDialog> clonedHashMap = (HashMap<KEY, JDialog>) dialogCache
                                .clone();

                for (KEY chartId : clonedHashMap.keySet()) {
                        if (dialogCache.get(chartId).getParent() == parent) {
                                disposeInstanceFor(chartId);
                        }
                }
        }

        public boolean disposeInstanceFor(KEY chartId) {
                synchronized (dialogCache) {

                        final DIALOG dialog = dialogCache.get(chartId);
                        if (dialog != null) {
                                dialog.dispose();
                                if (dialogCache.remove(chartId) == null) {
                                        LOGGER.warn("Hae?!?!"); //TODO cleanup
                                }
                                return true;
                        }
                        return false;
                }
        }

        /**
         * Checks whether there already is an instance for that key and otherwise
         * will create the instance by invoking the {@link FactoryInterface} #create
         * method.
         * 
         * @param key
         * @param factory
         *            {@link FactoryInterface} that creates the DIALOG
         * 
         * @return Always a visible and inFront instance for the given key.
         */
        public DIALOG getInstanceFor(final KEY key, FactoryInterface factory) {
                DIALOG dialog;
                if (isVisibleFor(key)) {
                        dialog = dialogCache.get(key);
                } else {

                        dialog = factory.create();

                        dialogCache.put(key, dialog);

                        dialog.addWindowListener(new WindowAdapter() {
                                @Override
                                public void windowClosed(final WindowEvent e) {
                                        disposeInstanceFor(key);
                                }
                        });
                }
                return dialog;
        }
        

        /**
         * Disposes all open instances.
         * 
         * @return <code>true</code> if at least one window has been disposed.
         */
        public boolean disposeAll() {
                
                boolean atLeastOne = false;
                HashSet<KEY> tempKeys = new HashSet<KEY>(dialogCache.keySet());
                for (KEY key : tempKeys) {
                        DIALOG dialog = dialogCache
                                        .get(key);
                        if (dialog != null) {
                                dialog.dispose();
                                atLeastOne = true;
                        }
                }
                tempKeys.clear();
                dialogCache.clear();
                return atLeastOne;
        }
        
}
1	package skrueger.swing;
2
3	import java.awt.Component;
4	import java.awt.event.WindowAdapter;
5	import java.awt.event.WindowEvent;
6	import java.util.HashMap;
7	import java.util.HashSet;
8
9	import javax.swing.JDialog;
10
11	import org.apache.log4j.Logger;
12
13	public abstract class DialogManager<KEY, DIALOG extends JDialog> extends
14	JDialog {
15
16	public abstract class FactoryInterface {
17
18	public abstract DIALOG create();
19
20	}
21
22	final Logger LOGGER = Logger.getLogger(DialogManager.class);
23
24	private HashMap<KEY, DIALOG> dialogCache = new HashMap<KEY, DIALOG>();
25
26	public DialogManager() {
27	}
28
29	/**
30	* This will be done with every dialog that an instance is required for.
31	*
32	* @param dialog
33	* @return
34	*/
35	protected DIALOG bringup(DIALOG dialog) {
36	if (!dialog.isVisible())
37	dialog.setVisible(true);
38	dialog.toFront();
39
40	return dialog;
41	}
42
43	public abstract DIALOG getInstanceFor(final KEY key, final Component owner,
44	final Object... constArgs);
45
46	/**
47	* @return Is there an open/visible dialog for the given layer id?
48	*/
49	public boolean isVisibleFor(KEY key) {
50	return dialogCache.containsKey(key) && dialogCache.get(key).isVisible();
51	}
52
53	/**
54	* Will dispose any dialog that is registered to the given parent
55	* {@link Component}
56	*
57	* @param parent
58	*/
59	public void disposeInstanceForParent(final Component parent) {
60
61	final HashMap<KEY, JDialog> clonedHashMap = (HashMap<KEY, JDialog>) dialogCache
62	.clone();
63
64	for (KEY chartId : clonedHashMap.keySet()) {
65	if (dialogCache.get(chartId).getParent() == parent) {
66	disposeInstanceFor(chartId);
67	}
68	}
69	}
70
71	public boolean disposeInstanceFor(KEY chartId) {
72	synchronized (dialogCache) {
73
74	final DIALOG dialog = dialogCache.get(chartId);
75	if (dialog != null) {
76	dialog.dispose();
77	if (dialogCache.remove(chartId) == null) {
78	LOGGER.warn("Hae?!?!"); //TODO cleanup
79	}
80	return true;
81	}
82	return false;
83	}
84	}
85
86	/**
87	* Checks whether there already is an instance for that key and otherwise
88	* will create the instance by invoking the {@link FactoryInterface} #create
89	* method.
90	*
91	* @param key
92	* @param factory
93	* {@link FactoryInterface} that creates the DIALOG
94	*
95	* @return Always a visible and inFront instance for the given key.
96	*/
97	public DIALOG getInstanceFor(final KEY key, FactoryInterface factory) {
98	DIALOG dialog;
99	if (isVisibleFor(key)) {
100	dialog = dialogCache.get(key);
101	} else {
102
103	dialog = factory.create();
104
105	dialogCache.put(key, dialog);
106
107	dialog.addWindowListener(new WindowAdapter() {
108	@Override
109	public void windowClosed(final WindowEvent e) {
110	disposeInstanceFor(key);
111	}
112	});
113	}
114	return dialog;
115	}
116
117
118	/**
119	* Disposes all open instances.
120	*
121	* @return <code>true</code> if at least one window has been disposed.
122	*/
123	public boolean disposeAll() {
124
125	boolean atLeastOne = false;
126	HashSet<KEY> tempKeys = new HashSet<KEY>(dialogCache.keySet());
127	for (KEY key : tempKeys) {
128	DIALOG dialog = dialogCache
129	.get(key);
130	if (dialog != null) {
131	dialog.dispose();
132	atLeastOne = true;
133	}
134	}
135	tempKeys.clear();
136	dialogCache.clear();
137	return atLeastOne;
138	}
139
140	}
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