mirror of
https://github.com/gsantner/dandelion
synced 2024-11-16 01:12:08 +01:00
130 lines
4 KiB
Java
130 lines
4 KiB
Java
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/*#######################################################
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*
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* Maintained by Gregor Santner, 2017-
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* https://gsantner.net/
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*
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* License: Apache 2.0
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* https://github.com/gsantner/opoc/#licensing
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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#########################################################*/
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package net.gsantner.opoc.activity;
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import android.content.Context;
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import android.os.Bundle;
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import android.support.annotation.LayoutRes;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.support.v4.app.Fragment;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import net.gsantner.opoc.util.ContextUtils;
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import butterknife.ButterKnife;
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/**
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* A common base fragment to extend from
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*/
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public abstract class GsFragmentBase extends Fragment {
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private boolean _fragmentFirstTimeVisible = true;
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private final Object _fragmentFirstTimeVisibleSync = new Object();
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protected ContextUtils _cu;
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protected Bundle _savedInstanceState = null;
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setHasOptionsMenu(true);
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}
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/**
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* Inflate the fragments layout. Don't override this method, just supply the needed
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* {@link LayoutRes} via abstract method {@link #getLayoutResId()}, super does the rest
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*/
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@Deprecated
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@Nullable
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@Override
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public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
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_cu = new ContextUtils(inflater.getContext());
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_cu.setAppLanguage(getAppLanguage());
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_savedInstanceState = savedInstanceState;
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View view = inflater.inflate(getLayoutResId(), container, false);
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ButterKnife.bind(this, view);
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return view;
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}
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@Override
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public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
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super.onViewCreated(view, savedInstanceState);
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view.postDelayed(() -> {
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synchronized (_fragmentFirstTimeVisibleSync) {
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if (getUserVisibleHint() && isVisible() && _fragmentFirstTimeVisible) {
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_fragmentFirstTimeVisible = false;
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onFragmentFirstTimeVisible();
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}
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}
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}, 1);
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}
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/**
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* Get a tag from the fragment, allows faster distinction
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*
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* @return This fragments tag
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*/
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public abstract String getFragmentTag();
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/**
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* Get the layout to be inflated in the fragment
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*
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* @return Layout resource id
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*/
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@LayoutRes
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protected abstract int getLayoutResId();
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/**
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* Event to be called when the back button was pressed
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* True should be returned when this was handled by the fragment
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* and no further handling in the view hierarchy is needed
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*
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* @return True if back handled by fragment
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*/
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public boolean onBackPressed() {
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return false;
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}
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/**
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* Set the language to be used in this fragment
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* Defaults to resolve the language from sharedpreferences: pref_key__language
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*
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* @return Empty string for system language, or an android locale code
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*/
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public String getAppLanguage() {
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if (getContext() != null) {
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return getContext().getSharedPreferences("app", Context.MODE_PRIVATE)
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.getString("pref_key__language", "");
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}
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return "";
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}
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/**
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* This will be called when this fragment gets the first time visible
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*/
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public void onFragmentFirstTimeVisible() {
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}
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@Override
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public void setUserVisibleHint(boolean isVisibleToUser) {
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super.setUserVisibleHint(isVisibleToUser);
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synchronized (_fragmentFirstTimeVisibleSync) {
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if (isVisibleToUser && _fragmentFirstTimeVisible) {
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_fragmentFirstTimeVisible = false;
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onFragmentFirstTimeVisible();
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}
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}
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}
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}
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