Accept freeMemory messages and pass them to the native code (e0155e95) · Commits · e / os / android_frameworks_base

core/java/android/webkit/WebView.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -1940,6 +1940,15 @@ public class WebView extends AbsoluteLayout
		return mIsPaused;
		}

		/**
		* Call this to inform the view that memory is low so that it can
		* free any available memory.
		* @hide
		*/
		public void freeMemory() {
		mWebViewCore.sendMessage(EventHub.FREE_MEMORY);
		}

		/**
		* Clear the resource cache. Note that the cache is per-application, so
		* this will clear the cache for all WebViews used.

core/java/android/webkit/WebViewCore.java

+17 −5

Original line number	Diff line number	Diff line
		@@ -590,6 +590,7 @@ final class WebViewCore {
		"SET_ACTIVE", // = 142;
		"ON_PAUSE", // = 143
		"ON_RESUME", // = 144
		"FREE_MEMORY", // = 145
		};

		class EventHub {
		@@ -645,10 +646,11 @@ final class WebViewCore {
		// or not, based on whether the WebView has focus.
		static final int SET_ACTIVE = 142;

		// pause/resume activity for just this DOM (unlike pauseTimers, which
		// lifecycle activities for just this DOM (unlike pauseTimers, which
		// is global)
		static final int ON_PAUSE = 143;
		static final int ON_RESUME = 144;
		static final int FREE_MEMORY = 145;

		// Network-based messaging
		static final int CLEAR_SSL_PREF_TABLE = 150;
		@@ -848,6 +850,11 @@ final class WebViewCore {
		nativeResume();
		break;

		case FREE_MEMORY:
		clearCache(false);
		nativeFreeMemory();
		break;

		case SET_NETWORK_STATE:
		if (BrowserFrame.sJavaBridge == null) {
		throw new IllegalStateException("No WebView " +
		@@ -858,10 +865,7 @@ final class WebViewCore {
		break;

		case CLEAR_CACHE:
		mBrowserFrame.clearCache();
		if (msg.arg1 == 1) {
		CacheManager.removeAllCacheFiles();
		}
		clearCache(msg.arg1 == 1);
		break;

		case CLEAR_HISTORY:
		@@ -1223,6 +1227,13 @@ final class WebViewCore {
		// WebViewCore private methods
		//-------------------------------------------------------------------------

		private void clearCache(boolean includeDiskFiles) {
		mBrowserFrame.clearCache();
		if (includeDiskFiles) {
		CacheManager.removeAllCacheFiles();
		}
		}

		private void loadUrl(String url) {
		if (DebugFlags.WEB_VIEW_CORE) Log.v(LOGTAG, " CORE loadUrl " + url);
		mBrowserFrame.loadUrl(url);
		@@ -1721,4 +1732,5 @@ final class WebViewCore {

		private native void nativePause();
		private native void nativeResume();
		private native void nativeFreeMemory();
		}