Java tutorial
/* * Copyright (C) 2009-2015 FBReader.ORG Limited <contact@fbreader.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ package org.geometerplus.android.fbreader.bookmark; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.*; import android.text.Editable; import android.text.TextWatcher; import android.util.DisplayMetrics; import android.util.TypedValue; import android.view.*; import android.widget.*; import yuku.ambilwarna.widget.AmbilWarnaPrefWidgetView; import org.geometerplus.zlibrary.core.options.ZLStringOption; import org.geometerplus.zlibrary.core.resources.ZLResource; import org.geometerplus.zlibrary.core.util.ZLColor; import org.geometerplus.zlibrary.ui.android.R; import org.geometerplus.zlibrary.ui.android.util.ZLAndroidColorUtil; import org.geometerplus.fbreader.book.*; import org.geometerplus.android.fbreader.api.FBReaderIntents; import org.geometerplus.android.fbreader.libraryService.BookCollectionShadow; import org.geometerplus.android.util.OrientationUtil; import org.geometerplus.android.util.ViewUtil; public class EditBookmarkActivity extends Activity implements IBookCollection.Listener<Book> { private final ZLResource myResource = ZLResource.resource("editBookmark"); private final BookCollectionShadow myCollection = new BookCollectionShadow(); private Bookmark myBookmark; private StyleListAdapter myStylesAdapter; private void addTab(TabHost host, String id, int content) { final TabHost.TabSpec spec = host.newTabSpec(id); spec.setIndicator(myResource.getResource(id).getValue()); spec.setContent(content); host.addTab(spec); } @Override public void onCreate(Bundle bundle) { super.onCreate(bundle); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.edit_bookmark); myBookmark = FBReaderIntents.getBookmarkExtra(getIntent()); if (myBookmark == null) { finish(); return; } final DisplayMetrics dm = getResources().getDisplayMetrics(); final int width = Math.min((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 500, dm), dm.widthPixels * 9 / 10); final int height = Math.min((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 350, dm), dm.heightPixels * 9 / 10); final TabHost tabHost = (TabHost) findViewById(R.id.edit_bookmark_tabhost); tabHost.setLayoutParams(new FrameLayout.LayoutParams(new ViewGroup.LayoutParams(width, height))); tabHost.setup(); addTab(tabHost, "text", R.id.edit_bookmark_content_text); addTab(tabHost, "style", R.id.edit_bookmark_content_style); addTab(tabHost, "delete", R.id.edit_bookmark_content_delete); final ZLStringOption currentTabOption = new ZLStringOption("LookNFeel", "EditBookmark", "text"); tabHost.setCurrentTabByTag(currentTabOption.getValue()); tabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() { public void onTabChanged(String tag) { if (!"delete".equals(tag)) { currentTabOption.setValue(tag); } } }); final EditText editor = (EditText) findViewById(R.id.edit_bookmark_text); editor.setText(myBookmark.getText()); final int len = editor.getText().length(); editor.setSelection(len, len); final Button saveTextButton = (Button) findViewById(R.id.edit_bookmark_save_text_button); saveTextButton.setEnabled(false); saveTextButton.setText(myResource.getResource("saveText").getValue()); saveTextButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { myCollection.bindToService(EditBookmarkActivity.this, new Runnable() { public void run() { myBookmark.setText(editor.getText().toString()); myCollection.saveBookmark(myBookmark); saveTextButton.setEnabled(false); } }); } }); editor.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence sequence, int start, int before, int count) { final String originalText = myBookmark.getText(); saveTextButton.setEnabled(!originalText.equals(editor.getText().toString())); } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void afterTextChanged(Editable s) { } }); final Button deleteButton = (Button) findViewById(R.id.edit_bookmark_delete_button); deleteButton.setText(myResource.getResource("deleteBookmark").getValue()); deleteButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { myCollection.bindToService(EditBookmarkActivity.this, new Runnable() { public void run() { myCollection.deleteBookmark(myBookmark); finish(); } }); } }); } @Override protected void onStart() { super.onStart(); myCollection.bindToService(this, new Runnable() { public void run() { final List<HighlightingStyle> styles = myCollection.highlightingStyles(); if (styles.isEmpty()) { finish(); return; } myStylesAdapter = new StyleListAdapter(styles); final ListView stylesList = (ListView) findViewById(R.id.edit_bookmark_content_style); stylesList.setAdapter(myStylesAdapter); stylesList.setOnItemClickListener(myStylesAdapter); myCollection.addListener(EditBookmarkActivity.this); } }); } @Override protected void onDestroy() { myCollection.unbind(); super.onDestroy(); } // method from IBookCollection.Listener public void onBookEvent(BookEvent event, Book book) { if (event == BookEvent.BookmarkStyleChanged) { myStylesAdapter.setStyleList(myCollection.highlightingStyles()); } } // method from IBookCollection.Listener public void onBuildEvent(IBookCollection.Status status) { } private class StyleListAdapter extends BaseAdapter implements AdapterView.OnItemClickListener { private final List<HighlightingStyle> myStyles; StyleListAdapter(List<HighlightingStyle> styles) { myStyles = new ArrayList<HighlightingStyle>(styles); } public synchronized void setStyleList(List<HighlightingStyle> styles) { myStyles.clear(); myStyles.addAll(styles); notifyDataSetChanged(); } public final synchronized int getCount() { return myStyles.size(); } public final synchronized HighlightingStyle getItem(int position) { return myStyles.get(position); } public final long getItemId(int position) { return position; } public final synchronized View getView(int position, View convertView, final ViewGroup parent) { final View view = convertView != null ? convertView : LayoutInflater.from(parent.getContext()).inflate(R.layout.style_item, parent, false); final HighlightingStyle style = getItem(position); final CheckBox checkBox = (CheckBox) ViewUtil.findView(view, R.id.style_item_checkbox); final AmbilWarnaPrefWidgetView colorView = (AmbilWarnaPrefWidgetView) ViewUtil.findView(view, R.id.style_item_color); final TextView titleView = ViewUtil.findTextView(view, R.id.style_item_title); final Button button = (Button) ViewUtil.findView(view, R.id.style_item_edit_button); checkBox.setChecked(style.Id == myBookmark.getStyleId()); colorView.setVisibility(View.VISIBLE); BookmarksUtil.setupColorView(colorView, style); titleView.setText(BookmarkUtil.getStyleName(style)); button.setVisibility(View.VISIBLE); button.setText(myResource.getResource("editStyle").getValue()); button.setOnClickListener(new Button.OnClickListener() { @Override public void onClick(View view) { startActivity(new Intent(EditBookmarkActivity.this, EditStyleActivity.class) .putExtra(EditStyleActivity.STYLE_ID_KEY, style.Id)); } }); return view; } public final synchronized void onItemClick(AdapterView<?> parent, View view, int position, long id) { final HighlightingStyle style = getItem(position); myCollection.bindToService(EditBookmarkActivity.this, new Runnable() { public void run() { myBookmark.setStyleId(style.Id); myCollection.setDefaultHighlightingStyleId(style.Id); myCollection.saveBookmark(myBookmark); } }); notifyDataSetChanged(); } } }