Android Open Source - friendica-for-android Pull To Refresh Web View

From Project

Back to project page friendica-for-android.

License

The source code is released under:

This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.

If you think the Android project friendica-for-android listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.

Java Source Code

/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes./*from   ww  w.j av a2s  . c om*/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.handmark.pulltorefresh.library;

import android.content.Context;
import android.util.AttributeSet;
import android.util.FloatMath;
import android.webkit.WebChromeClient;
import android.webkit.WebView;

public class PullToRefreshWebView extends PullToRefreshBase<WebView> {

  private final OnRefreshListener defaultOnRefreshListener = new OnRefreshListener() {

    public void onRefresh() {
      mRefreshableView.reload();
    }

  };

  private final WebChromeClient defaultWebChromeClient = new WebChromeClient() {

    @Override
    public void onProgressChanged(WebView view, int newProgress) {
      if (newProgress == 100) {
        onRefreshComplete();
      }
    }

  };

  public PullToRefreshWebView(Context context) {
    super(context);

    /**
     * Added so that by default, Pull-to-Refresh refreshes the page
     */
    setOnRefreshListener(defaultOnRefreshListener);
    mRefreshableView.setWebChromeClient(defaultWebChromeClient);
  }

  public PullToRefreshWebView(Context context, AttributeSet attrs) {
    super(context, attrs);

    /**
     * Added so that by default, Pull-to-Refresh refreshes the page
     */
    setOnRefreshListener(defaultOnRefreshListener);
    mRefreshableView.setWebChromeClient(defaultWebChromeClient);
  }

  public PullToRefreshWebView(Context context, Mode mode) {
    super(context, mode);

    /**
     * Added so that by default, Pull-to-Refresh refreshes the page
     */
    setOnRefreshListener(defaultOnRefreshListener);
    mRefreshableView.setWebChromeClient(defaultWebChromeClient);
  }

  @Override
  protected WebView createRefreshableView(Context context, AttributeSet attrs) {
    WebView webView = new WebView(context, attrs);

    webView.setId(R.id.webview);
    return webView;
  }

  @Override
  protected boolean isReadyForPullDown() {
    return mRefreshableView.getScrollY() == 0;
  }

  @Override
  protected boolean isReadyForPullUp() {
    float exactContentHeight = FloatMath.floor(mRefreshableView.getContentHeight() * mRefreshableView.getScale());
    return mRefreshableView.getScrollY() >= (exactContentHeight - mRefreshableView.getHeight());
  }
}

Java Source Code List