Extensions

public class ExampleCustomExportButton extends Button implements View.OnClickListener {

    private UiStateMenu settings;

    public ExampleCustomExportButton(Context context) {
        super(context);
        init();
    }

    public ExampleCustomExportButton(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public ExampleCustomExportButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        setText("Export Button");
        setOnClickListener(this);
    }

    @MainThread
    @OnEvent(value = {
      UiStateMenu.Event.ENTER_TOOL,
      UiStateMenu.Event.LEAVE_TOOL,
      UiStateMenu.Event.LEAVE_AND_REVERT_TOOL
    }, triggerDelay = 30)
    protected void onToolChanged() {
        AbstractToolPanel currentTool = settings != null ? settings.getCurrentTool() : null;
        if (currentTool != null && currentTool.isAttached()) {
            setVisibility(currentTool.isAcceptable() ? View.VISIBLE : View.GONE);
            if (UiStateMenu.MAIN_TOOL_ID.equals(settings.getCurrentPanelData().getId())) {
                setVisibility(View.VISIBLE);
            } else {
                setVisibility(View.INVISIBLE);
            }
        }
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        try {
            StateHandler stateHandler = StateHandler.findInViewContext(getContext());
            stateHandler.registerSettingsEventListener(this);
            settings = stateHandler.getStateModel(UiStateMenu.class);
        } catch (StateHandler.StateHandlerNotFoundException ignored) {
            ignored.printStackTrace();
        }
    }


    @Override
    public void onClick(View view) {
        settings.notifySaveClicked();
    }
}

public class MyImageStickerItem extends ImageStickerItem {

    public MyImageStickerItem(String id, @StringRes int name, ImageSource previewSource) {
        super(id, name, previewSource);
    }

    public MyImageStickerItem(String id, String name, ImageSource previewSource) {
        super(id, name, previewSource);
    }

    @Override
    public int getLayout() {
        return R.layout.imgly_list_item_sticker;
    }

    @Override
    public boolean isSelectable() {
        return false;
    }

    @Override
    public int describeContents() {
        return 0;
    }

    public boolean isPurchased(){
        // Todo: Your code here!
        return false;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        super.writeToParcel(dest, flags);
    }

    @NonNull
    @Override
    public Class<? extends DataSourceListAdapter.DataSourceViewHolder> getViewHolderClass() {
        return MyStickerViewHolder.class;
    }

    protected MyImageStickerItem(Parcel in) {
        super(in);
    }

    public static final Creator<MyImageStickerItem> CREATOR = new Creator<MyImageStickerItem>() {
        @Override
        public MyImageStickerItem createFromParcel(Parcel source) {
            return new MyImageStickerItem(source);
        }

        @Override
        public MyImageStickerItem[] newArray(int size) {
            return new MyImageStickerItem[size];
        }
    };
}

@android.support.annotation.Keep
public class MyStickerViewHolder extends DataSourceListAdapter.DataSourceViewHolder<MyImageStickerItem, Bitmap> implements View.OnClickListener {

    public final View contentHolder;
    @Nullable
    private final TextView textView;

    @Nullable
    private final ImageSourceView imageView;

    private boolean isPurchased = false;

    @android.support.annotation.Keep
    public DefaultViewHolder(@NonNull View v) {
        super(v);
        textView = v.findViewById(R.id.label);
        imageView = v.findViewById(R.id.image);
        contentHolder = v.findViewById(R.id.contentHolder);

        contentHolder.setOnClickListener(this);
    }

    @Override
    protected Bitmap createAsyncData(MyImageStickerItem abstractItem) {
        return abstractItem.hasStaticThumbnail() ? null : abstractItem.getThumbnailBitmap(Math.round(64 * uiDensity));
    }

    @Override
    protected void bindData(MyImageStickerItem data) {
        itemView.setContentDescription(data.getName());

        isPurchased = data.isPurchased();

        if (textView != null) {
            textView.setText(data.getName());
        }
        if (imageView != null) {
            if (data.hasStaticThumbnail()) {
                imageView.setAlpha(1f);
                imageView.setImageSource(data.getThumbnailSource());
            } else {
                imageView.setAlpha(0f);
            }
        }
    }

    @Override
    protected void bindData(MyImageStickerItem data, Bitmap bitmap) {
        if (imageView != null) {
            imageView.setAlpha(1f);
            imageView.setImageBitmap(bitmap);
        }
    }

    @Override
    public void setSelectedState(boolean selected) {
        contentHolder.setSelected(selected);
    }

    public void onClick(View v) {
        dispatchSelection();
        if (isPurchased) {
             dispatchOnItemClick();
        } else {
             // Todo: Your code here!
        }
    }
}

public class ToolAsButton extends AbstractToolPanel {

    public static String ID = "ToolAsButton";

    public ToolAsButton(@NonNull StateHandler stateHandler) {
        super(stateHandler);
    }

    @Override
    protected void onAttached(Context context, @NonNull View panelView) {
        super.onAttached(context, panelView);
        AssetConfig assetConfig = getStateHandler().getSettingsModel(AssetConfig.class);
        String monthName = (String) android.text.format.DateFormat.format("MMMM", new Date());
        String text = "Employee of the Month: " + monthName;
        FontAsset fontAsset = assetConfig.getAssetById(FontAsset.class, "imgly_font_open_sans_bold");
        TextStickerConfig currentConfig = new TextStickerConfig(text, Paint.Align.LEFT, fontAsset, Color.GRAY, Color.TRANSPARENT);
        getStateHandler().getSettingsModel(LayerListSettings.class).addLayer(new TextLayerSettings(currentConfig).setPosition(0.5, 0.05, 0, 0.05));
        getStateHandler().getStateModel(UiStateMenu.class).openMainMenu();
    }

    @Override
    protected int getLayoutResource() {
        return R.layout.imgly_panel_tool_menu;
    }

    @NonNull
    @Override
    protected Animator createShowAnimator(@NonNull View panelView) {
        return new AnimatorSet();
    }

    @NonNull
    @Override
    protected Animator createExitAnimator(@NonNull View panelView) {
        return new AnimatorSet();
    }

    @Override
    protected void onDetached() {

    }
}