X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=plugins%2Fnet.mograsim.plugin.core%2Fsrc%2Fnet%2Fmograsim%2Fplugin%2Fpreferences%2FEclipsePreferences.java;fp=plugins%2Fnet.mograsim.plugin.core%2Fsrc%2Fnet%2Fmograsim%2Fplugin%2Fpreferences%2FEclipsePreferences.java;h=c57c443e302844ca6d9d657b61510e7a7ed71823;hb=c6806c7c38252b1d782581599efecff3930aa395;hp=0000000000000000000000000000000000000000;hpb=17f902a2717d92dee566eae233cc635ec8bebd74;p=Mograsim.git

diff --git a/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/preferences/EclipsePreferences.java b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/preferences/EclipsePreferences.java
new file mode 100755
index 00000000..c57c443e
--- /dev/null
+++ b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/preferences/EclipsePreferences.java
@@ -0,0 +1,189 @@
+package net.mograsim.plugin.preferences;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.function.Consumer;
+import java.util.function.Function;
+
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.jface.resource.ColorRegistry;
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.RGB;
+import org.eclipse.ui.statushandlers.StatusManager;
+import org.eclipse.ui.themes.ITheme;
+
+import net.mograsim.plugin.MograsimActivator;
+import net.mograsim.preferences.ColorDefinition;
+import net.mograsim.preferences.Preferences;
+
+public class EclipsePreferences implements Preferences
+{
+	private final ITheme theme;
+	private final IPreferenceStore prefs;
+	private final Preferences defaultPrefs;
+
+	private final ListenerManager<Boolean> booleanListeners;
+	private final ListenerManager<Integer> intListeners;
+	private final ListenerManager<Double> doubleListeners;
+	private final ListenerManager<ColorDefinition> colorDefinitionListeners;
+
+	protected EclipsePreferences(ITheme theme, IPreferenceStore prefs, Preferences defaultPrefs)
+	{
+		this.theme = theme;
+		this.prefs = prefs;
+		this.defaultPrefs = defaultPrefs;
+
+		this.booleanListeners = new ListenerManager<>(this::getBoolean);
+		this.intListeners = new ListenerManager<>(this::getInt);
+		this.doubleListeners = new ListenerManager<>(this::getDouble);
+		this.colorDefinitionListeners = new ListenerManager<>(this::getColorDefinition);
+	}
+
+	@Override
+	public boolean getBoolean(String name)
+	{
+		prefs.setDefault(name, defaultPrefs.getBoolean(name));
+		return prefs.getBoolean(name);
+	}
+
+	@Override
+	public int getInt(String name)
+	{
+		prefs.setDefault(name, defaultPrefs.getInt(name));
+		return prefs.getInt(name);
+	}
+
+	@Override
+	public double getDouble(String name)
+	{
+		prefs.setDefault(name, defaultPrefs.getDouble(name));
+		return prefs.getDouble(name);
+	}
+
+	@Override
+	public ColorDefinition getColorDefinition(String name)
+	{
+		RGB rgb = getColorRegistry().getRGB(name);
+		if (rgb == null)
+		{
+			StatusManager.getManager().handle(new Status(IStatus.ERROR, MograsimActivator.PLUGIN_ID, "No color for name " + name));
+			return null;
+		}
+		return new ColorDefinition(rgb.red, rgb.green, rgb.blue);
+	}
+
+	@Override
+	public Color getColor(String name)
+	{
+		return getColorRegistry().get(name);
+	}
+
+	private ColorRegistry getColorRegistry()
+	{
+		return theme.getColorRegistry();
+	}
+
+	@Override
+	public void addBooleanListener(String name, Consumer<Boolean> listener)
+	{
+		booleanListeners.addListener(name, listener);
+	}
+
+	@Override
+	public void removeBooleanListener(String name, Consumer<Boolean> listener)
+	{
+		booleanListeners.removeListener(name, listener);
+	}
+
+	@Override
+	public void addIntListener(String name, Consumer<Integer> listener)
+	{
+		intListeners.addListener(name, listener);
+	}
+
+	@Override
+	public void removeIntListener(String name, Consumer<Integer> listener)
+	{
+		intListeners.removeListener(name, listener);
+	}
+
+	@Override
+	public void addDoubleListener(String name, Consumer<Double> listener)
+	{
+		doubleListeners.addListener(name, listener);
+	}
+
+	@Override
+	public void removeDoubleListener(String name, Consumer<Double> listener)
+	{
+		doubleListeners.removeListener(name, listener);
+	}
+
+	@Override
+	public void addColorDefinitionListener(String name, Consumer<ColorDefinition> listener)
+	{
+		colorDefinitionListeners.addListener(name, listener);
+	}
+
+	@Override
+	public void removeColorDefinitionListener(String name, Consumer<ColorDefinition> listener)
+	{
+		colorDefinitionListeners.removeListener(name, listener);
+	}
+
+	private class ListenerManager<P>
+	{
+		private final Map<String, Set<Consumer<P>>> listenersPerName;
+		private final IPropertyChangeListener eclipseListener;
+
+		public ListenerManager(Function<String, P> preferenceGetter)
+		{
+			this.listenersPerName = new HashMap<>();
+			this.eclipseListener = e ->
+			{
+				String name = e.getProperty();
+				synchronized (listenersPerName)
+				{
+					Set<Consumer<P>> listenersThisName = listenersPerName.get(name);
+					if (listenersThisName != null)
+					{
+						P p = preferenceGetter.apply(name);
+						listenersThisName.forEach(l -> l.accept(p));
+					}
+				}
+			};
+		}
+
+		public void addListener(String name, Consumer<P> listener)
+		{
+			synchronized (listenersPerName)
+			{
+				boolean wasEmpty = listenersPerName.isEmpty();
+				listenersPerName.computeIfAbsent(name, n -> new HashSet<>()).add(listener);
+				if (wasEmpty)
+					prefs.addPropertyChangeListener(eclipseListener);
+			}
+		}
+
+		public void removeListener(String name, Consumer<P> listener)
+		{
+			synchronized (listenersPerName)
+			{
+				Set<Consumer<P>> listenersThisName = listenersPerName.get(name);
+				if (listenersThisName != null)
+				{
+					listenersThisName.remove(listener);
+					if (listenersThisName.isEmpty())
+						listenersPerName.remove(name);
+				}
+				if (listenersPerName.isEmpty())
+					prefs.addPropertyChangeListener(eclipseListener);
+			}
+		}
+	}
+}
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