Android Open Source - force_analytics_example Custom Server Url Editor

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The source code is released under:
Copyright (c) 2011, salesforce.com, inc. All rights reserved. ======================================== Redistribution and use of this software in source and binary forms, with or without modificatio...
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Java Source Code

/*
 * Copyright (c) 2014, salesforce.com, inc.
 * All rights reserved./*from  ww w. j  a v  a  2 s . c  o m*/
 * Redistribution and use of this software in source and binary forms, with or
 * without modification, are permitted provided that the following conditions
 * are met:
 * - Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * - Neither the name of salesforce.com, inc. nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission of salesforce.com, inc.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package com.salesforce.androidsdk.ui;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.text.Editable;
import android.text.SpannableString;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.WindowManager.LayoutParams;
import android.webkit.URLUtil;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.salesforce.androidsdk.app.SalesforceSDKManager;
import com.salesforce.androidsdk.auth.LoginServerManager;

/**
 * Custom dialog to allow the user to set a label and URL to use for the login.
 */
public class CustomServerUrlEditor extends Dialog {

  private static final String PERSISTED_CTRL_FOCUS = "focusedId";
  private static final String PERSISTED_LABEL = "label";
  private static final String PERSISTED_URL_VALUE = "url";

  boolean isDefault;
  private SalesforceR salesforceR;
  private LoginServerManager loginServerManager;
  private int width;

  /**
   * Parameterized constructor.
   *
   * @param context Context.
   * @param width Width.
   */
  public CustomServerUrlEditor(Context context, int width) {
    super(context);

    // Object which allows reference to resources living outside the SDK.
    salesforceR = SalesforceSDKManager.getInstance().getSalesforceR();

    // Login server manager.
    loginServerManager = SalesforceSDKManager.getInstance().getLoginServerManager();

    // Width.
    this.width = width;
  }

  private String getEditDefaultValue(int editId) {
    if (editId == salesforceR.idPickerCustomLabel()) {
      return getString(salesforceR.stringServerUrlDefaultCustomLabel());
    } else { 
      return getString(salesforceR.stringServerUrlDefaultCustomUrl());
    }
  }

  private String getString(int resourceKey) {
    return getContext().getString(resourceKey);
  }

  @Override
  public void onBackPressed() {
    cancel();
  }

  @Override
  public void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    setEditText(salesforceR.idPickerCustomLabel(), savedInstanceState
        .getString(PERSISTED_LABEL));
    setEditText(salesforceR.idPickerCustomUrl(), savedInstanceState
        .getString(PERSISTED_URL_VALUE));
    if (savedInstanceState.getInt(PERSISTED_CTRL_FOCUS) > 0) {
      final EditText et = (EditText) findViewById(savedInstanceState
          .getInt(PERSISTED_CTRL_FOCUS));
      et.requestFocus();
    }
  }

  @Override
  public Bundle onSaveInstanceState() {
    final Bundle superBundle = super.onSaveInstanceState();
    persistEditCtrlInfo(superBundle, PERSISTED_LABEL, salesforceR.idPickerCustomLabel());
    persistEditCtrlInfo(superBundle, PERSISTED_URL_VALUE, salesforceR.idPickerCustomUrl());
    return superBundle;
  }

  @Override
  protected void onCreate(Bundle savedInstance) {
    final String label = (getEditDefaultValue((salesforceR.idPickerCustomLabel())));
    final String urlValue = (getEditDefaultValue((salesforceR.idPickerCustomUrl())));
    isDefault = urlValue.equals(getString(salesforceR.stringServerUrlDefaultCustomUrl()));
    if (isDefault) {
      setTitle(salesforceR.stringServerUrlAddTitle());
    } else {
      setTitle(salesforceR.stringServerUrlEditTitle());
    }
    setContentView(salesforceR.layoutCustomServerUrl());
    setEditText(salesforceR.idPickerCustomLabel(), label);
    setEditText(salesforceR.idPickerCustomUrl(), urlValue);

    /*
     * Sets handlers in the code for the dialog. 
     */
    final Button applyBtn = (Button) findViewById(salesforceR.idApplyButton());
    applyBtn.setOnClickListener(new View.OnClickListener() {

      @Override
      public void onClick(View v) {
        final String lbl = validateInput(salesforceR.idPickerCustomLabel());
        if (lbl == null) {
          return;
        }
        final String val = validateInput(salesforceR.idPickerCustomUrl());
        if (val == null) {
          return;
        }

        // Saves state and dismisses the dialog.
        loginServerManager.addCustomLoginServer(lbl, val);
        dismiss();
      }
    });
    final Button cancelBtn = (Button) findViewById(salesforceR.idCancelButton());
    cancelBtn.setOnClickListener(new View.OnClickListener() {

      @Override
      public void onClick(View v) {
        cancel();
      }
    });
    final LayoutParams params = getWindow().getAttributes();
    params.width = (width != 0 ? width : LayoutParams.FILL_PARENT);
    getWindow().setAttributes(params);
  }

  private void persistEditCtrlInfo(Bundle superBundle, String keyName,
      int ctrlId) {
    final EditText et = (EditText) findViewById(ctrlId);
    superBundle.putString(keyName, et.getText().toString());
    if (et.hasFocus()) {
      superBundle.putInt(PERSISTED_CTRL_FOCUS, ctrlId);
    }
  }

  private void setEditText(int editId, String value) {
    if (value == null) {
      throw new RuntimeException("Value cannot be null");
    }
    final EditText et = (EditText) findViewById(editId);
    final SpannableString labelSpan = new SpannableString(value);
    if (et != null) {
      et.setText(labelSpan);
      if (et.getOnFocusChangeListener() == null) {
        et.setOnFocusChangeListener(new OnFocusChangeListener() {

          @Override
          public void onFocusChange(View v, boolean hasFocus) {
            final EditText et = (EditText) v;
            boolean isDefaultValue = et.getText().toString().equals(
                getEditDefaultValue(et.getId()));
            if (hasFocus && isDefaultValue) {
              et.getText().clear();
            } else if (!hasFocus && et.getText().toString().equals("")) {
              if (et.getId() == salesforceR.idPickerCustomLabel()) {
                setEditText(salesforceR.idPickerCustomLabel(), getEditDefaultValue(et.getId()));
              } else {
                setEditText(salesforceR.idPickerCustomUrl(), getEditDefaultValue(et.getId()));
              }
            }
          }
        });
      }
    }
  }

  private String validateInput(int editId) {
    final EditText et = (EditText) findViewById(editId);
    final Editable etVal = et.getText();
    boolean isInvalidValue = etVal.toString().equals(getEditDefaultValue(editId))
        || etVal.toString().equals("");

    /*
     * Ensures that the URL is a 'https://' URL, since OAuth requires 'https://'.
     */
    if (editId == salesforceR.idPickerCustomUrl()) {
      isInvalidValue = !URLUtil.isHttpsUrl(etVal.toString());
      if (isInvalidValue) {
        Toast.makeText(getContext(), getContext().getString(salesforceR.stringInvalidServerUrl()),
            Toast.LENGTH_SHORT).show();
      }
    }
    if (isInvalidValue) {
      et.selectAll();
      et.requestFocus();
      return null;
    }
    return etVal.toString();
  }
}
Java Source Code List
