/*
* Copyright 2016 J. Alexandre Oliveira
*
* 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 com.alexive.graphicalutils.lists;
import android.content.Context;
import android.graphics.Rect;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.alexive.graphicalutils.R;
import com.alexive.graphicalutils.view.ProportionalImageView;
import com.alexive.graphicalutils.view.ViewUtils;
/**
* Base grid adapter class. Provides subheaders, click listeners setting, etc.
*/
public abstract class GridAdapter extends ListAdapter {
/*
---------------------
* ---------------------
* TODO MAJOR REFACTOR!!!!!!! or just make it an hybrid (rows with n columns or w/ 1)
* ---------------------
* ---------------------
*/
private final DetailsType mDetailsViewType;
private final String DETAILS_VIEW_TAG = "detailsviewtag";
private GridItemSpecs gridSpecs;
private int numCols;
public GridAdapter(DetailsType type) {
super();
mDetailsViewType = type;
}
@Override
public AwesomeViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
if (i == ListItemType.GRID_ITEM.resId) {
return getItemView(viewGroup);
} else
return super.onCreateViewHolder(viewGroup, i);
}
protected AwesomeViewHolder getItemView(ViewGroup group) {
if (gridSpecs == null)
gridSpecs = new GridItemSpecs();
LayoutInflater inflater = LayoutInflater.from(group.getContext());
View base = inflater.inflate(gridSpecs.detailsViewFloats ? R.layout
.grid_float_headerfooter_tile : R.layout.grid_dummy_tile, group, false);
base.setClickable(true);
AwesomeViewHolder result = new AwesomeViewHolder(base);
setListenerForHolder(result);
ProportionalImageView imageView = (ProportionalImageView) base.findViewById(R.id.imageView);
if (gridSpecs.forceSquareImage)
imageView.setSquare();
result.setImageView1(imageView);
if (mDetailsViewType == DetailsType.NONE) {
return result;
}
View details = getDetailsView(inflater, group, result);
ImageButton imageButton = (ImageButton) details.findViewById(R.id.imageButton);
imageButton.setOnClickListener(new ButtonListener(result));
result.setButton(imageButton);
if (gridSpecs.detailsViewFloats) {
//We just add it to the framelayout and set the gravity
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams
.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
FrameLayout fl = (FrameLayout) base.findViewById(R.id.floatParent);
params.gravity = gridSpecs.detailsGravityIsTop ? Gravity.TOP : Gravity.BOTTOM;
fl.addView(details, 1, params);
} else {
LinearLayout parent = (LinearLayout) base.findViewById(R.id.noFloatParent);
// LinearLayout parent = (LinearLayout) base.findViewById(gridSpecs.detailsGravityIsTop ? R
// .id.headerNoFloat : R.id.footerNoFloat);
// LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams
// .FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
parent.addView(details, gridSpecs.detailsGravityIsTop ? 0 : 1);
base.findViewById(R.id.noFloatParent).requestLayout();
}
return result;
}
// public String getGridImageTransitionName(Context c) {
// return c.getString(R.string.image_transition_name);
// }
public View getDetailsView(LayoutInflater inflater, ViewGroup parent,
AwesomeViewHolder result) {
//TODO FORCE DARK MODE
View view = null;
switch (mDetailsViewType) {
case SINGLE_LINE:
view = inflater.inflate(R.layout.griddetails_single_line, null);
break;
case TWO_LINES:
view = inflater.inflate(R.layout.griddetails_two_lines, null);
break;
default:
case NONE:
return null;
}
view.setTag(DETAILS_VIEW_TAG);
result.setDetailsView(view);
result.setText1((TextView) view.findViewById(android.R.id.text1));
result.setText2((TextView) view.findViewById(android.R.id.text2));
result.setButton((ImageButton) view.findViewById(R.id.imageButton));
return view;
}
@Override
public boolean shouldSubHeaderTextColorBeAccent() {
return false;
}
@Override
public boolean drawDivider(int i) {
//Dividers in a grid make no sense.
return false;
}
@Override
public void bindDataToListItem(int index,
View itemView,
ImageView iconOrAvatar,
ImageButton button,
TextView... texts) {
//useless
//you should override bindDataToItem
}
@Override
protected void preBindData(int i, AwesomeViewHolder awesomeViewHolder) {
bindDataToItem(i,
awesomeViewHolder.itemView,
awesomeViewHolder.getDetailsView(),
awesomeViewHolder.getImageView1(),
awesomeViewHolder.button,
awesomeViewHolder.text1,
awesomeViewHolder.text2);
}
/**
* Fills in the list item
*
* @param index The index of the item
* @param itemView The list item's view
* @param detailsView Item's detail view, typically under the image
* @param imageViewOrAvatar The item's ImageView, or the avatar if it's an ordinary item
* @param imageButton If it's an ordinary list item, it's button
* @param txt The item's text views, from top to bottom, left to right
*/
public abstract void bindDataToItem(int index,
View itemView,
View detailsView,
ImageView imageViewOrAvatar,
ImageButton imageButton,
TextView... txt);
public void setItemSpecs(GridItemSpecs specs) {
gridSpecs = specs;
}
//public abstract void bindDataToItemView(int position, ImageView imageView, View... detailsView);
public GridLayoutManager getGridLayoutManager(Context ctx, int numColumns) {
this.numCols = numColumns;
GridLayoutManager mngr = new GridLayoutManager(ctx, numColumns);
mngr.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int position) {
return getItemViewType(position) == ListItemType.GRID_ITEM.resId ? 1 : numCols;
}
});
return mngr;
}
public RecyclerView.ItemDecoration getDecorationForSmallSpacing(Context c) {
return new Decorator(ViewUtils.convertDPtoPixels(c, 1));
}
public RecyclerView.ItemDecoration getDecorationForLargeSpacing(Context c) {
return new Decorator(ViewUtils.convertDPtoPixels(c, 4));
}
public enum DetailsType {
NONE,
SINGLE_LINE,
TWO_LINES
}
public static class GridItemSpecs {
public boolean detailsGravityIsTop = false;
public boolean detailsViewFloats = false;
public boolean forceDarkMode = false;
public boolean forceSquareImage = true;
}
private class Decorator extends RecyclerView.ItemDecoration {
private final int padding;
public Decorator(int padding) {
this.padding = padding;
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
super.getItemOffsets(outRect, view, parent, state);
int pos = parent.getChildAdapterPosition(view);
if (getListItemDataType(pos) == ListItemType.SUB_HEADER)
return;
//TODO Faster approach
//TODO actually compute the list item's padding IF it's on the edge.
//Having subheaders/items taking up a full row made the code I had before messed up
// //If the list has subheaders, without this the padding will be VERY EFFED Up.
// int newPos = 0;
// for (int i = 0; i <= pos; i++) {
// if (isSubHeader(i)) {
// newPos = 0;
// }else
// newPos++;
// }
//
// if(newPos % numCols != 0)
outRect.left = padding;
// if ((newPos + 1) % numCols != 0);
outRect.right = padding;
outRect.bottom = padding;
outRect.top = padding;
}
}
}
