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45 lines
1.0 KiB
45 lines
1.0 KiB
package com.jotuntech.sketcher.client.command;
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import java.nio.ByteBuffer;
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import java.util.Deque;
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import com.jotuntech.sketcher.client.Client;
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import com.jotuntech.sketcher.client.Command;
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import com.jotuntech.sketcher.client.Connection;
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import com.jotuntech.sketcher.common.BitmapUndoData;
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import com.jotuntech.sketcher.common.UndoEntry;
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import com.jotuntech.sketcher.common.User;
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public class UndoDataCommand implements Command {
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byte[] data;
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public int perform(Client client, User user) {
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if(user == null) {
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return Connection.SEND_NONE;
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}
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if(user.isViewer()) {
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return Connection.SEND_NONE;
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}
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Deque<UndoEntry> undoDeque = user.getUndoDeque();
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if(undoDeque.size() == 0) {
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return Connection.SEND_NONE;
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}
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BitmapUndoData bud = (BitmapUndoData) undoDeque.getLast().getUndoData();
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bud.decode(data);
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return Connection.SEND_NONE;
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}
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public void decode(ByteBuffer in) {
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data = new byte[in.remaining()];
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in.get(data);
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}
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public void encode(ByteBuffer out) {
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out.put(data);
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}
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}
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