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Code Issues Packages Projects Releases Wiki Activity

Android back and forward buttons gray out if unusable

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This commit is contained in:
Isaac 2016-04-01 15:55:12 +03:00
parent f47f9406f4
commit 3bbcf57ca2
2 changed files with 30 additions and 4 deletions
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6
res/layout/drawer.xml
View File

@ -55,7 +55,8 @@
android:paddingLeft="4dp" android:paddingLeft="4dp"
android:paddingRight="4dp" android:paddingRight="4dp"
android:paddingTop="4dp" android:paddingTop="4dp"
android:src="?attr/arrowBackDrawable"/> android:src="?attr/arrowBackDrawable"
android:id="@+id/action_back_button" />
</RelativeLayout> </RelativeLayout>
<RelativeLayout <RelativeLayout
@ -94,7 +95,8 @@
android:paddingLeft="4dp" android:paddingLeft="4dp"
android:paddingRight="4dp" android:paddingRight="4dp"
android:paddingTop="4dp" android:paddingTop="4dp"
android:src="?attr/arrowForwardDrawable"/> android:src="?attr/arrowForwardDrawable"
android:id="@+id/action_forward_button" />
</RelativeLayout> </RelativeLayout>
</LinearLayout> </LinearLayout>

28
src/org/kiwix/kiwixmobile/KiwixMobileActivity.java
View File

@ -26,6 +26,9 @@ import android.content.DialogInterface;
import android.content.Intent; import android.content.Intent;
import android.content.SharedPreferences; import android.content.SharedPreferences;
import android.content.res.Configuration; import android.content.res.Configuration;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.net.Uri; import android.net.Uri;
import android.os.Build; import android.os.Build;
import android.os.Bundle; import android.os.Bundle;
@ -628,7 +631,7 @@ public class KiwixMobileActivity extends AppCompatActivity
} else { } else {
Log.e(TAG_KIWIX, "ZIM file doesn't exist at " + file.getAbsolutePath()); Log.e(TAG_KIWIX, "ZIM file doesn't exist at " + file.getAbsolutePath());
Toast.makeText(this, getResources().getString(R.string.error_filenotfound), Toast.makeText(this, getResources().getString(R.string.error_filenotfound),
Toast.LENGTH_LONG).show(); Toast.LENGTH_LONG).show();
} }
return false; return false;
} }
@ -976,10 +979,11 @@ public class KiwixMobileActivity extends AppCompatActivity
public boolean onPrepareOptionsMenu(Menu menu) { public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu); super.onPrepareOptionsMenu(menu);
refreshBookmarkSymbol(menu); refreshBookmarkSymbol(menu);
refreshNavigationButtons();
return true; return true;
} }
public void refreshBookmarkSymbol(Menu menu){ public void refreshBookmarkSymbol(Menu menu) {
if (menu.findItem(R.id.menu_bookmarks) != null && if (menu.findItem(R.id.menu_bookmarks) != null &&
getCurrentWebView().getUrl() != null && getCurrentWebView().getUrl() != null &&
!getCurrentWebView().getUrl().equals("file:///android_res/raw/help.html") && !getCurrentWebView().getUrl().equals("file:///android_res/raw/help.html") &&
@ -993,6 +997,26 @@ public class KiwixMobileActivity extends AppCompatActivity
} }
} }
public void refreshNavigationButtons() {
ImageView back = (ImageView) mDrawerLayout.findViewById(R.id.action_back_button);
ImageView forward = (ImageView) mDrawerLayout.findViewById(R.id.action_forward_button);
toggleImageViewGrayFilter(back, getCurrentWebView().canGoBack());
toggleImageViewGrayFilter(forward, getCurrentWebView().canGoForward());
mDrawerLayout.findViewById(R.id.action_back).setEnabled(getCurrentWebView().canGoBack());
mDrawerLayout.findViewById(R.id.action_forward).setEnabled(getCurrentWebView().canGoForward());
}
public void toggleImageViewGrayFilter(ImageView image, boolean state) {
Drawable originalIcon = image.getDrawable();
Drawable res = originalIcon.mutate();
if (state) {
res.clearColorFilter();
} else {
res.setColorFilter(Color.GRAY, PorterDuff.Mode.SRC_IN);
}
image.setImageDrawable(res);
}
public void loadPrefs() { public void loadPrefs() {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this); SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);