RenderStateTestRec.java

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package com.realtime.crossfire.jxclient.gui.log;
 
import java.util.List;
import org.jetbrains.annotations.NotNull;
import org.junit.Assert;
 
public class RenderStateTestRec {
 
    public static final int FONT_HEIGHT = 11;
 
    public static final int HEIGHT = 10*FONT_HEIGHT;
 
    @NotNull
    private final RenderState rs;
 
    @NotNull
    private final Buffer buffer;
 
    public RenderStateTestRec(final int maxLines) {
        buffer = new TestBuffer(maxLines, 200, FONT_HEIGHT);
        buffer.setShowTimestamps(true);
        rs = new RenderState();
        assert buffer != null;
        rs.setHeight(buffer, HEIGHT);
 
        final BufferListener bufferListener = new BufferListener() {
 
            @Override
            public void lineAdded() {
                assert rs != null;
                assert buffer != null;
                rs.linesAdded(buffer);
            }
 
            @Override
            public void lineReplaced() {
                assert rs != null;
                assert buffer != null;
                rs.linesReplaced(buffer);
            }
 
            @Override
            public void linesRemoved(@NotNull final List<Line> lines) {
                assert rs != null;
                assert buffer != null;
                rs.linesRemoved(buffer, lines);
            }
 
        };
        assert buffer != null;
        buffer.addBufferListener(bufferListener);
    }
 
    @NotNull
    public Buffer getBuffer() {
        return buffer;
    }
 
    public void scrollTo(final int y) {
        rs.scrollTo(buffer, y);
    }
 
    public void checkState(final int expectedTopIndex, final int expectedTopOffset) {
        final int expectedScrollPos = expectedTopIndex*FONT_HEIGHT+expectedTopOffset;
        final int topIndex = rs.getTopIndex();
        final int topOffset = rs.getTopOffset();
        final int scrollPos = rs.getScrollPos();
        Assert.assertEquals(formatState(expectedTopIndex, expectedTopOffset, expectedScrollPos), formatState(topIndex, topOffset, scrollPos));
    }
 
    @NotNull
    private String formatState(final int topIndex, final int topOffset, final int scrollPos) {
        return "top="+topIndex+"/"+topOffset+" pos="+scrollPos+"/"+buffer.getTotalHeight();
    }
 
}