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package org.wordpress.android.ui;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.webkit.WebView;
import org.wordpress.android.R;
import java.util.Map;
/**
* Basic activity for displaying a WebView.
*/
public abstract class WebViewActivity extends AppCompatActivity {
/** Primary webview used to display content. */
private static final String URL = "url";
protected WebView mWebView;
@Override
public void onCreate(Bundle savedInstanceState) {
supportRequestWindowFeature(Window.FEATURE_PROGRESS);
super.onCreate(savedInstanceState);
// clear title text so there's no title until actual web page title can be shown
// this is done here rather than in the manifest to automatically handle descendants
// such as AuthenticatedWebViewActivity
setTitle("");
configureView();
// note: do NOT call mWebView.getSettings().setUserAgentString(WordPress.getUserAgent())
// here since it causes problems with the browser-sniffing that some sites rely on to
// format the page for mobile display
mWebView = (WebView) findViewById(R.id.webView);
mWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
configureWebView();
if (savedInstanceState == null) {
loadContent();
}
}
/*
* load the desired content - only done on initial activity creation (ie: when savedInstanceState
* is null) since onSaveInstanceState() and onRestoreInstanceState() will take care of saving
* and restoring the correct URL when the activity is recreated - note that descendants should
* override this w/o calling super() to load a different URL.
*/
protected void loadContent() {
String url = getIntent().getStringExtra(URL);
if (url != null) {
loadUrl(url);
}
}
/*
* save the webView state with the bundle so it can be restored
*/
@Override
protected void onSaveInstanceState(Bundle outState) {
mWebView.saveState(outState);
super.onSaveInstanceState(outState);
}
/*
* restore the webView state saved above
*/
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
mWebView.restoreState(savedInstanceState);
}
@Override
protected void onPause() {
super.onPause();
// Flash video may keep playing if the webView isn't paused here
pauseWebView();
}
@Override
protected void onResume() {
super.onResume();
resumeWebView();
}
public void configureView() {
setContentView(R.layout.webview);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar != null) {
setSupportActionBar(toolbar);
}
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayShowTitleEnabled(true);
actionBar.setDisplayHomeAsUpEnabled(true);
}
}
/*
* descendants should override this to set a WebViewClient, WebChromeClient, and anything
* else necessary to configure the webView prior to navigation
*/
protected void configureWebView() {
// noop
}
private void pauseWebView() {
if (mWebView != null) {
mWebView.onPause();
}
}
private void resumeWebView() {
if (mWebView != null) {
mWebView.onResume();
}
}
/**
* Load the specified URL in the webview.
*
* @param url URL to load in the webview.
*/
protected void loadUrl(String url) {
mWebView.loadUrl(url);
}
public void loadUrl(String url, Map<String, String> additionalHttpHeaders) {
mWebView.loadUrl(url, additionalHttpHeaders);
}
@Override
public void onBackPressed() {
if (mWebView != null && mWebView.canGoBack())
mWebView.goBack();
else
super.onBackPressed();
}
@Override
public boolean onOptionsItemSelected(final MenuItem item) {
if (item.getItemId() == android.R.id.home) {
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
}
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