X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=net.mograsim.plugin.core%2Fsrc%2Fnet%2Fmograsim%2Fplugin%2Ftables%2FLazyTableViewer.java;fp=net.mograsim.plugin.core%2Fsrc%2Fnet%2Fmograsim%2Fplugin%2Ftables%2FLazyTableViewer.java;h=e00742f9d427b40fce5f5effea786d25382578a1;hb=c9d1646a7969181829b65dabb5db89ea7a2da69d;hp=0000000000000000000000000000000000000000;hpb=7958e659b3ea9aac43c1a67a0b2921c5323e4c84;p=Mograsim.git

diff --git a/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/LazyTableViewer.java b/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/LazyTableViewer.java
new file mode 100644
index 00000000..e00742f9
--- /dev/null
+++ b/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/LazyTableViewer.java
@@ -0,0 +1,50 @@
+package net.mograsim.plugin.tables;
+
+import org.eclipse.jface.viewers.IContentProvider;
+import org.eclipse.jface.viewers.ILazyContentProvider;
+import org.eclipse.jface.viewers.TableViewer;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Table;
+
+public class LazyTableViewer extends TableViewer
+{
+
+	public LazyTableViewer(Composite parent, int style)
+	{
+		super(parent, style | SWT.VIRTUAL);
+	}
+
+	public LazyTableViewer(Composite parent)
+	{
+		super(parent);
+	}
+
+	public LazyTableViewer(Table table)
+	{
+		super(table);
+	}
+
+	@Override
+	public void setContentProvider(IContentProvider provider)
+	{
+		if (!(provider instanceof ILazyContentProvider))
+			throw new IllegalArgumentException("Content provider must be an ILazyContentProvider");
+		super.setContentProvider(provider);
+	}
+
+	public void refreshLazy()
+	{
+		Table t = getTable();
+		ILazyContentProvider provider = (ILazyContentProvider) getContentProvider();
+		doClearAll();
+		int startIndex = t.getTopIndex();
+		int numRows = t.getBounds().height / t.getItemHeight();
+		int endIndex = startIndex + numRows + 5;
+
+		for (int i = startIndex; i < endIndex; i++)
+		{
+			provider.updateElement(i);
+		}
+	}
+}