/*
* Copyright 2011 Yuri Kanivets
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package clock.socoolby.com.clock.widget.adapters;
import android.content.Context;
import android.graphics.Typeface;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
/**
* Abstract wheel adapter provides common functionality for adapters.
*/
public abstract class AbstractWheelTextAdapter extends AbstractWheelAdapter {
/** Text view resource. Used as a default view for adapter. */
public static final int TEXT_VIEW_ITEM_RESOURCE = -1;
/** No resource constant. */
protected static final int NO_RESOURCE = 0;
/** Default text color */
public static final int DEFAULT_TEXT_COLOR = 0xFF101010;
/** Default text color */
public static final int LABEL_COLOR = 0xFF700070;
/** Default text size */
public static final int DEFAULT_TEXT_SIZE = 20;
// Text settings
private int textColor = DEFAULT_TEXT_COLOR;
private int textSize = DEFAULT_TEXT_SIZE;
// Current context
protected Context context;
// Layout inflater
protected LayoutInflater inflater;
// Items resources
protected int itemResourceId;
protected int itemTextResourceId;
// Empty items resources
protected int emptyItemResourceId;
/**
* Constructor
* @param context the current context
*/
protected AbstractWheelTextAdapter(Context context) {
this(context, TEXT_VIEW_ITEM_RESOURCE);
}
/**
* Constructor
* @param context the current context
* @param itemResource the resource ID for a layout file containing a TextView to use when instantiating items views
*/
protected AbstractWheelTextAdapter(Context context, int itemResource) {
this(context, itemResource, NO_RESOURCE);
}
/**
* Constructor
* @param context the current context
* @param itemResource the resource ID for a layout file containing a TextView to use when instantiating items views
* @param itemTextResource the resource ID for a text view in the item layout
*/
protected AbstractWheelTextAdapter(Context context, int itemResource, int itemTextResource) {
this.context = context;
itemResourceId = itemResource;
itemTextResourceId = itemTextResource;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
/**
* Gets text color
* @return the text color
*/
public int getTextColor() {
return textColor;
}
/**
* Sets text color
* @param textColor the text color to set
*/
public void setTextColor(int textColor) {
this.textColor = textColor;
}
/**
* Gets text size
* @return the text size
*/
public int getTextSize() {
return textSize;
}
/**
* Sets text size
* @param textSize the text size to set
*/
public void setTextSize(int textSize) {
this.textSize = textSize;
}
/**
* Gets resource Id for items views
* @return the item resource Id
*/
public int getItemResource() {
return itemResourceId;
}
/**
* Sets resource Id for items views
* @param itemResourceId the resource Id to set
*/
public void setItemResource(int itemResourceId) {
this.itemResourceId = itemResourceId;
}
/**
* Gets resource Id for text view in item layout
* @return the item text resource Id
*/
public int getItemTextResource() {
return itemTextResourceId;
}
/**
* Sets resource Id for text view in item layout
* @param itemTextResourceId the item text resource Id to set
*/
public void setItemTextResource(int itemTextResourceId) {
this.itemTextResourceId = itemTextResourceId;
}
/**
* Gets resource Id for empty items views
* @return the empty item resource Id
*/
public int getEmptyItemResource() {
return emptyItemResourceId;
}
/**
* Sets resource Id for empty items views
* @param emptyItemResourceId the empty item resource Id to set
*/
public void setEmptyItemResource(int emptyItemResourceId) {
this.emptyItemResourceId = emptyItemResourceId;
}
/**
* Returns text for specified item
* @param index the item index
* @return the text of specified items
*/
protected abstract CharSequence getItemText(int index);
@Override
public View getItem(int index, View convertView, ViewGroup parent) {
if (index >= 0 && index < getItemsCount()) {
if (convertView == null) {
convertView = getView(itemResourceId, parent);
}
TextView textView = getTextView(convertView, itemTextResourceId);
if (textView != null) {
CharSequence text = getItemText(index);
if (text == null) {
text = "";
}
textView.setText(text);
if (itemResourceId == TEXT_VIEW_ITEM_RESOURCE) {
configureTextView(textView);
}
}
return convertView;
}
return null;
}
@Override
public View getEmptyItem(View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = getView(emptyItemResourceId, parent);
}
if (emptyItemResourceId == TEXT_VIEW_ITEM_RESOURCE && convertView instanceof TextView) {
configureTextView((TextView)convertView);
}
return convertView;
}
/**
* Configures text view. Is called for the TEXT_VIEW_ITEM_RESOURCE views.
* @param view the text view to be configured
*/
protected void configureTextView(TextView view) {
view.setTextColor(textColor);
view.setGravity(Gravity.CENTER);
view.setTextSize(textSize);
view.setLines(1);
view.setTypeface(Typeface.SANS_SERIF, Typeface.NORMAL);
}
/**
* Loads a text view from view
* @param view the text view or layout containing it
* @param textResource the text resource Id in layout
* @return the loaded text view
*/
private TextView getTextView(View view, int textResource) {
TextView text = null;
try {
if (textResource == NO_RESOURCE && view instanceof TextView) {
text = (TextView) view;
} else if (textResource != NO_RESOURCE) {
text = (TextView) view.findViewById(textResource);
}
} catch (ClassCastException e) {
Log.e("AbstractWheelAdapter", "You must supply a resource ID for a TextView");
throw new IllegalStateException(
"AbstractWheelAdapter requires the resource ID to be a TextView", e);
}
return text;
}
/**
* Loads view from resources
* @param resource the resource Id
* @return the loaded view or null if resource is not set
*/
private View getView(int resource, ViewGroup parent) {
switch (resource) {
case NO_RESOURCE:
return null;
case TEXT_VIEW_ITEM_RESOURCE:
return new TextView(context);
default:
return inflater.inflate(resource, parent, false);
}
}
}
