org.transdroid.core.gui.navigation.SetTransferRatesDialog.java Source code

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Here is the source code for org.transdroid.core.gui.navigation.SetTransferRatesDialog.java

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/* 
 * Copyright 2010-2013 Eric Kok et al.
 * 
 * Transdroid is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Transdroid is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Transdroid.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.transdroid.core.gui.navigation;

import java.security.InvalidParameterException;

import org.transdroid.core.R;

import android.app.Dialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;

/**
 * A dialog fragment that allow picking of maximum download and upload transfer rates as well as the resetting of these
 * values.
 * @author Eric Kok
 */
public class SetTransferRatesDialog extends DialogFragment {

    private OnRatesPickedListener onRatesPickedListener = null;
    private TextView maxSpeedDown, maxSpeedUp;

    public SetTransferRatesDialog() {
        setRetainInstance(true);
    }

    /**
     * Sets the callback for results in this dialog (with newly selected values or a reset).
     * @param onRatesPickedListener The event listener to this dialog
     * @return This dialog, for method chaining
     */
    public SetTransferRatesDialog setOnRatesPickedListener(OnRatesPickedListener onRatesPickedListener) {
        this.onRatesPickedListener = onRatesPickedListener;
        return this;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        if (onRatesPickedListener == null)
            throw new InvalidParameterException(
                    "Please first set the callback listener using setOnRatesPickedListener before opening the dialog.");
        final View transferRatesContent = getActivity().getLayoutInflater().inflate(R.layout.dialog_transferrates,
                null, false);
        maxSpeedDown = (TextView) transferRatesContent.findViewById(R.id.maxspeeddown_text);
        maxSpeedUp = (TextView) transferRatesContent.findViewById(R.id.maxspeedup_text);
        bindButtons(transferRatesContent, maxSpeedDown, R.id.down1Button, R.id.down2Button, R.id.down3Button,
                R.id.down4Button, R.id.down5Button, R.id.down6Button, R.id.down7Button, R.id.down8Button,
                R.id.down9Button, R.id.down0Button);
        bindButtons(transferRatesContent, maxSpeedUp, R.id.up1Button, R.id.up2Button, R.id.up3Button,
                R.id.up4Button, R.id.up5Button, R.id.up6Button, R.id.up7Button, R.id.up8Button, R.id.up9Button,
                R.id.up0Button);
        ((Button) transferRatesContent.findViewById(R.id.ok_button)).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                int maxDown = -1, maxUp = -1;
                try {
                    maxDown = Integer.parseInt(maxSpeedDown.getText().toString());
                    maxUp = Integer.parseInt(maxSpeedUp.getText().toString());
                } catch (NumberFormatException e) {
                }
                if (maxDown <= 0 || maxUp <= 0) {
                    onRatesPickedListener.onInvalidNumber();
                }
                onRatesPickedListener.onRatesPicked(maxDown, maxUp);
                dismiss();
            }
        });
        ((Button) transferRatesContent.findViewById(R.id.reset_button)).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                onRatesPickedListener.resetRates();
                dismiss();
            }
        });
        ((Button) transferRatesContent.findViewById(R.id.cancel_button)).setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                dismiss();
            }
        });
        Dialog dialog = new Dialog(getActivity());
        dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        dialog.setContentView(transferRatesContent);
        return dialog;
    }

    private void bindButtons(View transferRatesContent, View numberView, int... buttonResource) {
        for (int i : buttonResource) {
            // Keep the relevant number as reference in the view tag and bind the click listerner
            transferRatesContent.findViewById(i).setTag(numberView);
            transferRatesContent.findViewById(i).setOnClickListener(onNumberClicked);
        }
    }

    private android.view.View.OnClickListener onNumberClicked = new android.view.View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // Append the text contents of the button itself as text to the current number (as reference in the view's
            // tag)
            TextView numberView = (TextView) v.getTag();
            if (numberView.getText().equals("-"))
                numberView.setText("");
            numberView.setText(numberView.getText().toString() + ((Button) v).getText().toString());
        }
    };

    /**
     * Listener interface to the user having picked or wanting to resets the current maximum transfer speeds;
     */
    public interface OnRatesPickedListener {
        public void onRatesPicked(int maxDownloadSpeed, int maxUploadSpeed);

        public void resetRates();

        public void onInvalidNumber();
    }

}