com.github.xpenatan.gdx.backends.teavm.TeaClipboard Maven / Gradle / Ivy

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Tool to generate libgdx to javascript using teaVM
There is a newer version: 1.0.4
package com.github.xpenatan.gdx.backends.teavm;

import com.badlogic.gdx.utils.Clipboard;
import com.github.xpenatan.gdx.backends.teavm.dom.ClipboardEventWrapper;
import com.github.xpenatan.gdx.backends.teavm.dom.DataTransferWrapper;
import com.github.xpenatan.gdx.backends.teavm.dom.impl.TeaWindow;
import org.teavm.jso.JSBody;

/**
 * Clipboard implementation copied over from libGDX/GWT. Paste only works within the libGDX application.
 */
public class TeaClipboard implements Clipboard {

    private boolean requestedWritePermissions = false;
    private boolean hasWritePermissions = true;

    private final ClipboardWriteHandler writeHandler = new ClipboardWriteHandler();

    private String content = "";

    public TeaClipboard() {
        TeaWindow.get().getDocument().addEventListener("copy", evt -> {
            ClipboardEventWrapper event = (ClipboardEventWrapper)evt;
            DataTransferWrapper clipboardData = event.getClipboardData();
            if(clipboardData != null) {
    //            System.out.println("COPY DATA: " + content);
                clipboardData.setData("text/plain", content);
            }
            evt.preventDefault();
        });

        TeaWindow.get().getDocument().addEventListener("cut", evt -> {
            ClipboardEventWrapper event = (ClipboardEventWrapper)evt;
            DataTransferWrapper clipboardData = event.getClipboardData();
            if(clipboardData != null) {
    //            System.out.println("CUT DATA: " + content);
                clipboardData.setData("text/plain", content);
            }
            evt.preventDefault();
        });

        TeaWindow.get().getDocument().addEventListener("paste", evt -> {
            ClipboardEventWrapper event = (ClipboardEventWrapper)evt;
            DataTransferWrapper clipboardData = event.getClipboardData();
            if(clipboardData != null) {
                content = clipboardData.getData("text/plain");
//                System.out.println("PASTE DATA: " + content);
            }
            evt.preventDefault();
        });
    }

    @Override
    public boolean hasContents() {
        String contents = getContents();
        return contents != null && !contents.isEmpty();
    }

    @Override
    public String getContents () {
        return content;
    }

    @Override
    public void setContents (String content) {
        this.content = content;
        if (requestedWritePermissions || TeaApplication.getAgentInfo().isFirefox()) {
          if (hasWritePermissions) setContentNATIVE(content);
        } else {
          TeaPermissions.queryPermission("clipboard-write", writeHandler);
          requestedWritePermissions = true;
        }
    }

    @JSBody(params = {"content"}, script =
          "if (\"clipboard\" in navigator) {\n" +
          "    navigator.clipboard.writeText(content);\n" +
          "}")
    private static native void setContentNATIVE(String content);

    private class ClipboardWriteHandler implements TeaPermissions.TeaPermissionResult {
        @Override
        public void granted() {
            hasWritePermissions = true;
            setContentNATIVE(content);
        }

        @Override
        public void denied() {
            hasWritePermissions = false;
        }

        @Override
        public void prompt() {
            hasWritePermissions = true;
            setContentNATIVE(content);
        }
    }
}