package it.neokree.materialtabs;
import java.util.LinkedList;
import java.util.List;
import java.util.Objects;
import it.neokree.materialtabs.R;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.support.v7.widget.LinearLayoutCompat;
import android.util.AttributeSet;
import android.view.View;
import android.widget.HorizontalScrollView;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
/**
* A Toolbar that contains multiple tabs
* @author neokree
*
*/
@SuppressLint("InflateParams")
public class MaterialTabHost extends RelativeLayout implements View.OnClickListener {
private int primaryColor;
private int accentColor;
private int textColor;
private int iconColor;
private List<MaterialTab> tabs;
private boolean hasIcons;
private boolean isTablet;
private float density;
private boolean scrollable;
private HorizontalScrollView scrollView;
private LinearLayout layout;
private ImageButton left;
private ImageButton right;
private static int tabSelected;
public MaterialTabHost(Context context) {
this(context, null);
}
public MaterialTabHost(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public MaterialTabHost(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
scrollView = new HorizontalScrollView(context);
scrollView.setOverScrollMode(HorizontalScrollView.OVER_SCROLL_NEVER);
scrollView.setHorizontalScrollBarEnabled(false);
layout = new LinearLayout(context);
scrollView.addView(layout);
// get attributes
if(attrs != null) {
TypedArray a = context.getTheme().obtainStyledAttributes(attrs,R.styleable.MaterialTabHost, 0, 0);
try {
// custom attributes
hasIcons = a.getBoolean(R.styleable.MaterialTabHost_hasIcons, false);
primaryColor = a.getColor(R.styleable.MaterialTabHost_materialTabsPrimaryColor, Color.parseColor("#009688"));
accentColor = a.getColor(R.styleable.MaterialTabHost_accentColor,Color.parseColor("#00b0ff"));
iconColor = a.getColor(R.styleable.MaterialTabHost_iconColor,Color.WHITE);
textColor = a.getColor(R.styleable.MaterialTabHost_textColor,Color.WHITE);
} finally {
a.recycle();
}
}
else {
hasIcons = false;
}
this.isInEditMode();
scrollable = false;
isTablet = this.getResources().getBoolean(R.bool.isTablet);
density = this.getResources().getDisplayMetrics().density;
tabSelected = 0;
// initialize tabs list
tabs = new LinkedList<MaterialTab>();
// set background color
super.setBackgroundColor(primaryColor);
}
public void setPrimaryColor(int color) {
this.primaryColor = color;
this.setBackgroundColor(primaryColor);
for(MaterialTab tab : tabs) {
tab.setPrimaryColor(color);
}
}
public void setAccentColor(int color) {
this.accentColor = color;
for(MaterialTab tab : tabs) {
tab.setAccentColor(color);
}
}
public void setTextColor(int color) {
this.textColor = color;
for(MaterialTab tab : tabs) {
tab.setTextColor(color);
}
}
public void setIconColor(int color) {
this.iconColor = color;
for(MaterialTab tab : tabs) {
tab.setIconColor(color);
}
}
public void addTab(MaterialTab tab) {
// add properties to tab
tab.setAccentColor(accentColor);
tab.setPrimaryColor(primaryColor);
tab.setTextColor(textColor);
tab.setIconColor(iconColor);
tab.setPosition(tabs.size());
// insert new tab in list
tabs.add(tab);
if(tabs.size() == 4 && !hasIcons) {
// switch tabs to scrollable before its draw
scrollable = true;
}
if(tabs.size() == 6 && hasIcons) {
scrollable = true;
}
}
public MaterialTab newTab() {
return new MaterialTab(this.getContext(),hasIcons);
}
public void setSelectedNavigationItem(int position) {
if(position < 0 || position > tabs.size()) {
throw new RuntimeException("Index overflow");
} else {
// tab at position will select, other will deselect
for(int i = 0; i < tabs.size(); i++) {
MaterialTab tab = tabs.get(i);
if(i == position) {
tab.activateTab();
}
else {
tabs.get(i).disableTab();
}
}
// move the tab if it is slidable
if(scrollable) {
scrollTo(position);
}
tabSelected = position;
}
}
private void scrollTo(int position) {
int totalWidth = 0;//(int) ( 60 * density);
for (int i = 0; i < position; i++) {
int width = tabs.get(i).getView().getWidth();
if(width == 0) {
if(!isTablet)
width = (int) (tabs.get(i).getTabMinWidth() + (24 * density));
else
width = (int) (tabs.get(i).getTabMinWidth() + (48 * density));
}
totalWidth += width;
}
scrollView.smoothScrollTo(totalWidth, 0);
}
@Override
public void removeAllViews() {
for(int i = 0; i<tabs.size();i++) {
tabs.remove(i);
}
layout.removeAllViews();
super.removeAllViews();
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
if(this.getWidth() != 0 && tabs.size() != 0)
notifyDataSetChanged();
}
public void notifyDataSetChanged() {
super.removeAllViews();
layout.removeAllViews();
if (!scrollable) { // not scrollable tabs
int tabWidth = this.getWidth() / tabs.size();
// set params for resizing tabs width
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(tabWidth, HorizontalScrollView.LayoutParams.MATCH_PARENT);
for (MaterialTab t : tabs) {
layout.addView(t.getView(), params);
}
} else { //scrollable tabs
if(!isTablet) {
for (int i = 0; i < tabs.size(); i++) {
LinearLayout.LayoutParams params;
MaterialTab tab = tabs.get(i);
int tabWidth = (int) (tab.getTabMinWidth() + (24 * density)); // 12dp + text/icon width + 12dp
if (i == 0) {
// first tab
View view = new View(layout.getContext());
view.setMinimumWidth((int) (60 * density));
layout.addView(view);
}
params = new LinearLayout.LayoutParams(tabWidth, HorizontalScrollView.LayoutParams.MATCH_PARENT);
layout.addView(tab.getView(), params);
if (i == tabs.size() - 1) {
// last tab
View view = new View(layout.getContext());
view.setMinimumWidth((int) (60 * density));
layout.addView(view);
}
}
}
else {
// is a tablet
for (int i = 0; i < tabs.size(); i++) {
LinearLayout.LayoutParams params;
MaterialTab tab = tabs.get(i);
int tabWidth = (int) (tab.getTabMinWidth() + (48 * density)); // 24dp + text/icon width + 24dp
params = new LinearLayout.LayoutParams(tabWidth, HorizontalScrollView.LayoutParams.MATCH_PARENT);
layout.addView(tab.getView(), params);
}
}
}
if (isTablet && scrollable) {
// if device is a tablet and have scrollable tabs add right and left arrows
Resources res = getResources();
left = new ImageButton(this.getContext());
left.setId(R.id.left);
left.setImageDrawable(res.getDrawable(R.drawable.left_arrow));
left.setBackgroundColor(Color.TRANSPARENT);
left.setOnClickListener(this);
// set 56 dp width and 48 dp height
RelativeLayout.LayoutParams paramsLeft = new LayoutParams((int)( 56 * density),(int) (48 * density));
paramsLeft.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
paramsLeft.addRule(RelativeLayout.ALIGN_PARENT_TOP);
paramsLeft.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
this.addView(left,paramsLeft);
right = new ImageButton(this.getContext());
right.setId(R.id.right);
right.setImageDrawable(res.getDrawable(R.drawable.right_arrow));
right.setBackgroundColor(Color.TRANSPARENT);
right.setOnClickListener(this);
RelativeLayout.LayoutParams paramsRight = new LayoutParams((int)( 56 * density),(int) (48 * density));
paramsRight.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
paramsRight.addRule(RelativeLayout.ALIGN_PARENT_TOP);
paramsRight.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
this.addView(right,paramsRight);
RelativeLayout.LayoutParams paramsScroll = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
paramsScroll.addRule(RelativeLayout.LEFT_OF, R.id.right);
paramsScroll.addRule(RelativeLayout.RIGHT_OF,R.id.left);
this.addView(scrollView,paramsScroll);
}
else {
// if is not a tablet add only scrollable content
RelativeLayout.LayoutParams paramsScroll = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
this.addView(scrollView,paramsScroll);
}
this.setSelectedNavigationItem(tabSelected);
}
public MaterialTab getCurrentTab() {
for(MaterialTab tab : tabs) {
if (tab.isSelected())
return tab;
}
return null;
}
@Override
public void onClick(View v) { // on tablet left/right button clicked
int currentPosition = this.getCurrentTab().getPosition();
if (v.getId() == R.id.right && currentPosition < tabs.size() -1) {
currentPosition++;
// set next tab selected
this.setSelectedNavigationItem(currentPosition);
// change fragment
tabs.get(currentPosition).getTabListener().onTabSelected(tabs.get(currentPosition));
return;
}
if(v.getId() == R.id.left && currentPosition > 0) {
currentPosition--;
// set previous tab selected
this.setSelectedNavigationItem(currentPosition);
// change fragment
tabs.get(currentPosition).getTabListener().onTabSelected(tabs.get(currentPosition));
return;
}
}
}
