73 |
74 |
--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env bash
2 |
3 | ##############################################################################
4 | ##
5 | ## Gradle start up script for UN*X
6 | ##
7 | ##############################################################################
8 |
9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
10 | DEFAULT_JVM_OPTS=""
11 |
12 | APP_NAME="Gradle"
13 | APP_BASE_NAME=`basename "$0"`
14 |
15 | # Use the maximum available, or set MAX_FD != -1 to use that value.
16 | MAX_FD="maximum"
17 |
18 | warn ( ) {
19 | echo "$*"
20 | }
21 |
22 | die ( ) {
23 | echo
24 | echo "$*"
25 | echo
26 | exit 1
27 | }
28 |
29 | # OS specific support (must be 'true' or 'false').
30 | cygwin=false
31 | msys=false
32 | darwin=false
33 | case "`uname`" in
34 | CYGWIN* )
35 | cygwin=true
36 | ;;
37 | Darwin* )
38 | darwin=true
39 | ;;
40 | MINGW* )
41 | msys=true
42 | ;;
43 | esac
44 |
45 | # Attempt to set APP_HOME
46 | # Resolve links: $0 may be a link
47 | PRG="$0"
48 | # Need this for relative symlinks.
49 | while [ -h "$PRG" ] ; do
50 | ls=`ls -ld "$PRG"`
51 | link=`expr "$ls" : '.*-> \(.*\)$'`
52 | if expr "$link" : '/.*' > /dev/null; then
53 | PRG="$link"
54 | else
55 | PRG=`dirname "$PRG"`"/$link"
56 | fi
57 | done
58 | SAVED="`pwd`"
59 | cd "`dirname \"$PRG\"`/" >/dev/null
60 | APP_HOME="`pwd -P`"
61 | cd "$SAVED" >/dev/null
62 |
63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
64 |
65 | # Determine the Java command to use to start the JVM.
66 | if [ -n "$JAVA_HOME" ] ; then
67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
68 | # IBM's JDK on AIX uses strange locations for the executables
69 | JAVACMD="$JAVA_HOME/jre/sh/java"
70 | else
71 | JAVACMD="$JAVA_HOME/bin/java"
72 | fi
73 | if [ ! -x "$JAVACMD" ] ; then
74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
75 |
76 | Please set the JAVA_HOME variable in your environment to match the
77 | location of your Java installation."
78 | fi
79 | else
80 | JAVACMD="java"
81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
82 |
83 | Please set the JAVA_HOME variable in your environment to match the
84 | location of your Java installation."
85 | fi
86 |
87 | # Increase the maximum file descriptors if we can.
88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
89 | MAX_FD_LIMIT=`ulimit -H -n`
90 | if [ $? -eq 0 ] ; then
91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
92 | MAX_FD="$MAX_FD_LIMIT"
93 | fi
94 | ulimit -n $MAX_FD
95 | if [ $? -ne 0 ] ; then
96 | warn "Could not set maximum file descriptor limit: $MAX_FD"
97 | fi
98 | else
99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
100 | fi
101 | fi
102 |
103 | # For Darwin, add options to specify how the application appears in the dock
104 | if $darwin; then
105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
106 | fi
107 |
108 | # For Cygwin, switch paths to Windows format before running java
109 | if $cygwin ; then
110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"`
111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
112 | JAVACMD=`cygpath --unix "$JAVACMD"`
113 |
114 | # We build the pattern for arguments to be converted via cygpath
115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
116 | SEP=""
117 | for dir in $ROOTDIRSRAW ; do
118 | ROOTDIRS="$ROOTDIRS$SEP$dir"
119 | SEP="|"
120 | done
121 | OURCYGPATTERN="(^($ROOTDIRS))"
122 | # Add a user-defined pattern to the cygpath arguments
123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then
124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
125 | fi
126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh
127 | i=0
128 | for arg in "$@" ; do
129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
131 |
132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
134 | else
135 | eval `echo args$i`="\"$arg\""
136 | fi
137 | i=$((i+1))
138 | done
139 | case $i in
140 | (0) set -- ;;
141 | (1) set -- "$args0" ;;
142 | (2) set -- "$args0" "$args1" ;;
143 | (3) set -- "$args0" "$args1" "$args2" ;;
144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
150 | esac
151 | fi
152 |
153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
154 | function splitJvmOpts() {
155 | JVM_OPTS=("$@")
156 | }
157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
159 |
160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
161 |
--------------------------------------------------------------------------------
/library/src/main/java/com/github/techisfun/android/topsheet/TopSheetDialog.java:
--------------------------------------------------------------------------------
1 | package com.github.techisfun.android.topsheet;
2 | /*
3 | * Copyright (C) 2015 The Android Open Source Project
4 | *
5 | * Licensed under the Apache License, Version 2.0 (the "License");
6 | * you may not use this file except in compliance with the License.
7 | * You may obtain a copy of the License at
8 | *
9 | * http://www.apache.org/licenses/LICENSE-2.0
10 | *
11 | * Unless required by applicable law or agreed to in writing, software
12 | * distributed under the License is distributed on an "AS IS" BASIS,
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 | * See the License for the specific language governing permissions and
15 | * limitations under the License.
16 | */
17 |
18 | import android.content.Context;
19 | import android.os.Build;
20 | import android.os.Bundle;
21 | import android.util.TypedValue;
22 | import android.view.View;
23 | import android.view.ViewGroup;
24 | import android.view.Window;
25 | import android.widget.FrameLayout;
26 |
27 | import com.google.android.material.bottomsheet.BottomSheetBehavior;
28 |
29 | import androidx.annotation.LayoutRes;
30 | import androidx.annotation.NonNull;
31 | import androidx.annotation.StyleRes;
32 | import androidx.appcompat.app.AppCompatDialog;
33 | import androidx.coordinatorlayout.widget.CoordinatorLayout;
34 |
35 | /**
36 | * Created by andrea on 23/08/16.
37 | */
38 | public class TopSheetDialog extends AppCompatDialog {
39 |
40 | private TopSheetBehavior topSheetBehavior;
41 |
42 | public TopSheetDialog(@NonNull Context context) {
43 | super(context, getThemeResId(context, 0));
44 | supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
45 | }
46 |
47 | public TopSheetDialog(@NonNull Context context, @StyleRes int theme) {
48 | super(context, getThemeResId(context, theme));
49 | // We hide the title bar for any style configuration. Otherwise, there will be a gap
50 | // above the bottom sheet when it is expanded.
51 | supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
52 | }
53 |
54 | protected TopSheetDialog(@NonNull Context context, boolean cancelable,
55 | OnCancelListener cancelListener) {
56 | super(context, cancelable, cancelListener);
57 | supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
58 | }
59 |
60 | @Override
61 | public void setContentView(@LayoutRes int layoutResId) {
62 | super.setContentView(wrapInTopSheet(layoutResId, null, null));
63 | }
64 |
65 | @Override
66 | protected void onCreate(Bundle savedInstanceState) {
67 | super.onCreate(savedInstanceState);
68 | getWindow().setLayout(
69 | ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
70 | }
71 |
72 | @Override
73 | public void setContentView(View view) {
74 | super.setContentView(wrapInTopSheet(0, view, null));
75 | }
76 |
77 | @Override
78 | public void setContentView(View view, ViewGroup.LayoutParams params) {
79 | super.setContentView(wrapInTopSheet(0, view, params));
80 | }
81 |
82 | private View wrapInTopSheet(int layoutResId, View view, ViewGroup.LayoutParams params) {
83 | final CoordinatorLayout coordinator = (CoordinatorLayout) View.inflate(getContext(),
84 | R.layout.top_sheet_dialog, null);
85 | if (layoutResId != 0 && view == null) {
86 | view = getLayoutInflater().inflate(layoutResId, coordinator, false);
87 | }
88 | FrameLayout topSheet = (FrameLayout) coordinator.findViewById(R.id.design_top_sheet);
89 | topSheetBehavior = TopSheetBehavior.from(topSheet);
90 | topSheetBehavior.setTopSheetCallback(mTopSheetCallback);
91 | if (params == null) {
92 | topSheet.addView(view);
93 | } else {
94 | topSheet.addView(view, params);
95 | }
96 | // We treat the CoordinatorLayout as outside the dialog though it is technically inside
97 | if (shouldWindowCloseOnTouchOutside()) {
98 | coordinator.findViewById(R.id.top_sheet_touch_outside).setOnClickListener(
99 | new View.OnClickListener() {
100 | @Override
101 | public void onClick(View view) {
102 | if (isShowing()) {
103 | cancel();
104 | }
105 | }
106 | });
107 | }
108 | return coordinator;
109 | }
110 |
111 | private boolean shouldWindowCloseOnTouchOutside() {
112 | if (true) {
113 | return true;
114 | }
115 |
116 | if (Build.VERSION.SDK_INT < 11) {
117 | return true;
118 | }
119 | TypedValue value = new TypedValue();
120 | //noinspection SimplifiableIfStatement
121 | if (getContext().getTheme()
122 | .resolveAttribute(android.R.attr.windowCloseOnTouchOutside, value, true)) {
123 | return value.data != 0;
124 | }
125 | return false;
126 | }
127 |
128 | @Override
129 | public void show() {
130 | super.show();
131 | //topSheetBehavior.setState(TopSheetBehavior.STATE_EXPANDED);
132 | }
133 |
134 | private static int getThemeResId(Context context, int themeId) {
135 | if (themeId == 0) {
136 | // If the provided theme is 0, then retrieve the dialogTheme from our theme
137 | TypedValue outValue = new TypedValue();
138 | if (context.getTheme().resolveAttribute(
139 | R.attr.bottomSheetDialogTheme, outValue, true)) {
140 | themeId = outValue.resourceId;
141 | } else {
142 | // bottomSheetDialogTheme is not provided; we default to our light theme
143 | themeId = R.style.Theme_Design_TopSheetDialog;
144 | }
145 | }
146 | return themeId;
147 | }
148 |
149 | private final TopSheetBehavior.TopSheetCallback mTopSheetCallback
150 | = new TopSheetBehavior.TopSheetCallback() {
151 | @Override
152 | public void onStateChanged(@NonNull View topSheet,
153 | @BottomSheetBehavior.State int newState) {
154 | if (newState == TopSheetBehavior.STATE_HIDDEN) {
155 | dismiss();
156 | }
157 | }
158 |
159 | @Override
160 | public void onSlide(@NonNull View topSheet, float slideOffset) {
161 | }
162 | };
163 |
164 |
165 | }
166 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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/library/src/main/java/com/github/techisfun/android/topsheet/TopSheetBehavior.java:
--------------------------------------------------------------------------------
1 | package com.github.techisfun.android.topsheet;
2 |
3 | /*
4 | * Copyright (C) 2015 The Android Open Source Project
5 | *
6 | * Licensed under the Apache License, Version 2.0 (the "License");
7 | * you may not use this file except in compliance with the License.
8 | * You may obtain a copy of the License at
9 | *
10 | * http://www.apache.org/licenses/LICENSE-2.0
11 | *
12 | * Unless required by applicable law or agreed to in writing, software
13 | * distributed under the License is distributed on an "AS IS" BASIS,
14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 | * See the License for the specific language governing permissions and
16 | * limitations under the License.
17 | */
18 |
19 |
20 | import android.content.Context;
21 | import android.content.res.TypedArray;
22 | import android.os.Parcel;
23 | import android.os.Parcelable;
24 | import android.util.AttributeSet;
25 | import android.view.MotionEvent;
26 | import android.view.VelocityTracker;
27 | import android.view.View;
28 | import android.view.ViewConfiguration;
29 | import android.view.ViewGroup;
30 |
31 | import java.lang.annotation.Retention;
32 | import java.lang.annotation.RetentionPolicy;
33 | import java.lang.ref.WeakReference;
34 |
35 | import androidx.annotation.IntDef;
36 | import androidx.annotation.NonNull;
37 | import androidx.coordinatorlayout.widget.CoordinatorLayout;
38 | import androidx.core.os.ParcelableCompat;
39 | import androidx.core.os.ParcelableCompatCreatorCallbacks;
40 | import androidx.core.view.MotionEventCompat;
41 | import androidx.core.view.NestedScrollingChild;
42 | import androidx.core.view.VelocityTrackerCompat;
43 | import androidx.core.view.ViewCompat;
44 | import androidx.customview.view.AbsSavedState;
45 | import androidx.customview.widget.ViewDragHelper;
46 |
47 |
48 | /**
49 | * An interaction behavior plugin for a child view of {@link CoordinatorLayout} to make it work as
50 | * a bottom sheet.
51 | */
52 | public class TopSheetBehavior extends CoordinatorLayout.Behavior {
53 |
54 | /**
55 | * Callback for monitoring events about bottom sheets.
56 | */
57 | public abstract static class TopSheetCallback {
58 |
59 | /**
60 | * Called when the bottom sheet changes its state.
61 | *
62 | * @param bottomSheet The bottom sheet view.
63 | * @param newState The new state. This will be one of {@link #STATE_DRAGGING},
64 | * {@link #STATE_SETTLING}, {@link #STATE_EXPANDED},
65 | * {@link #STATE_COLLAPSED}, or {@link #STATE_HIDDEN}.
66 | */
67 | public abstract void onStateChanged(@NonNull View bottomSheet, @State int newState);
68 |
69 | /**
70 | * Called when the bottom sheet is being dragged.
71 | *
72 | * @param bottomSheet The bottom sheet view.
73 | * @param slideOffset The new offset of this bottom sheet within its range, from 0 to 1
74 | * when it is moving upward, and from 0 to -1 when it moving downward.
75 | */
76 | public abstract void onSlide(@NonNull View bottomSheet, float slideOffset);
77 | }
78 |
79 | /**
80 | * The bottom sheet is dragging.
81 | */
82 | public static final int STATE_DRAGGING = 1;
83 |
84 | /**
85 | * The bottom sheet is settling.
86 | */
87 | public static final int STATE_SETTLING = 2;
88 |
89 | /**
90 | * The bottom sheet is expanded.
91 | */
92 | public static final int STATE_EXPANDED = 3;
93 |
94 | /**
95 | * The bottom sheet is collapsed.
96 | */
97 | public static final int STATE_COLLAPSED = 4;
98 |
99 | /**
100 | * The bottom sheet is hidden.
101 | */
102 | public static final int STATE_HIDDEN = 5;
103 |
104 | /**
105 | * @hide
106 | */
107 | @IntDef({STATE_EXPANDED, STATE_COLLAPSED, STATE_DRAGGING, STATE_SETTLING, STATE_HIDDEN})
108 | @Retention(RetentionPolicy.SOURCE)
109 | public @interface State {
110 | }
111 |
112 | private static final float HIDE_THRESHOLD = 0.5f;
113 |
114 | private static final float HIDE_FRICTION = 0.1f;
115 |
116 | private float mMaximumVelocity;
117 |
118 | private int mPeekHeight;
119 |
120 | private int mMinOffset;
121 |
122 | private int mMaxOffset;
123 |
124 | private boolean mHideable;
125 |
126 | private boolean mSkipCollapsed;
127 |
128 | @State
129 | private int mState = STATE_COLLAPSED;
130 |
131 | private ViewDragHelper mViewDragHelper;
132 |
133 | private boolean mIgnoreEvents;
134 |
135 | private int mLastNestedScrollDy;
136 |
137 | private boolean mNestedScrolled;
138 |
139 | private int mParentHeight;
140 |
141 | private WeakReference mViewRef;
142 |
143 | private WeakReference mNestedScrollingChildRef;
144 |
145 | private TopSheetCallback mCallback;
146 |
147 | private VelocityTracker mVelocityTracker;
148 |
149 | private int mActivePointerId;
150 |
151 | private int mInitialY;
152 |
153 | private boolean mTouchingScrollingChild;
154 |
155 | /**
156 | * Default constructor for instantiating TopSheetBehaviors.
157 | */
158 | public TopSheetBehavior() {
159 | }
160 |
161 | /**
162 | * Default constructor for inflating TopSheetBehaviors from layout.
163 | *
164 | * @param context The {@link Context}.
165 | * @param attrs The {@link AttributeSet}.
166 | */
167 | public TopSheetBehavior(Context context, AttributeSet attrs) {
168 | super(context, attrs);
169 | TypedArray a = context.obtainStyledAttributes(attrs,
170 | R.styleable.BottomSheetBehavior_Layout);
171 | setPeekHeight(a.getDimensionPixelSize(
172 | R.styleable.BottomSheetBehavior_Layout_behavior_peekHeight, 0));
173 | setHideable(a.getBoolean(R.styleable.BottomSheetBehavior_Layout_behavior_hideable, false));
174 | setSkipCollapsed(a.getBoolean(R.styleable.BottomSheetBehavior_Layout_behavior_skipCollapsed,
175 | false));
176 | a.recycle();
177 | ViewConfiguration configuration = ViewConfiguration.get(context);
178 | mMaximumVelocity = configuration.getScaledMaximumFlingVelocity();
179 | }
180 |
181 | @Override
182 | public Parcelable onSaveInstanceState(CoordinatorLayout parent, V child) {
183 | return new SavedState(super.onSaveInstanceState(parent, child), mState);
184 | }
185 |
186 | @Override
187 | public void onRestoreInstanceState(CoordinatorLayout parent, V child, Parcelable state) {
188 | SavedState ss = (SavedState) state;
189 | super.onRestoreInstanceState(parent, child, ss.getSuperState());
190 | // Intermediate states are restored as collapsed state
191 | if (ss.state == STATE_DRAGGING || ss.state == STATE_SETTLING) {
192 | mState = STATE_COLLAPSED;
193 | } else {
194 | mState = ss.state;
195 | }
196 | }
197 |
198 | @Override
199 | public boolean onLayoutChild(CoordinatorLayout parent, V child, int layoutDirection) {
200 | if (ViewCompat.getFitsSystemWindows(parent) && !ViewCompat.getFitsSystemWindows(child)) {
201 | ViewCompat.setFitsSystemWindows(child, true);
202 | }
203 | int savedTop = child.getTop();
204 | // First let the parent lay it out
205 | parent.onLayoutChild(child, layoutDirection);
206 | // Offset the bottom sheet
207 | mParentHeight = parent.getHeight();
208 | mMinOffset = Math.max(-child.getHeight(), -(child.getHeight() - mPeekHeight));
209 | mMaxOffset = 0;
210 | if (mState == STATE_EXPANDED) {
211 | ViewCompat.offsetTopAndBottom(child, mMaxOffset);
212 | } else if (mHideable && mState == STATE_HIDDEN) {
213 | ViewCompat.offsetTopAndBottom(child, -child.getHeight());
214 | } else if (mState == STATE_COLLAPSED) {
215 | ViewCompat.offsetTopAndBottom(child, mMinOffset);
216 | } else if (mState == STATE_DRAGGING || mState == STATE_SETTLING) {
217 | ViewCompat.offsetTopAndBottom(child, savedTop - child.getTop());
218 | }
219 | if (mViewDragHelper == null) {
220 | mViewDragHelper = ViewDragHelper.create(parent, mDragCallback);
221 | }
222 | mViewRef = new WeakReference<>(child);
223 | mNestedScrollingChildRef = new WeakReference<>(findScrollingChild(child));
224 | return true;
225 | }
226 |
227 | @Override
228 | public boolean onInterceptTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
229 | if (!child.isShown()) {
230 | return false;
231 | }
232 | int action = MotionEventCompat.getActionMasked(event);
233 | // Record the velocity
234 | if (action == MotionEvent.ACTION_DOWN) {
235 | reset();
236 | }
237 | if (mVelocityTracker == null) {
238 | mVelocityTracker = VelocityTracker.obtain();
239 | }
240 | mVelocityTracker.addMovement(event);
241 | switch (action) {
242 | case MotionEvent.ACTION_UP:
243 | case MotionEvent.ACTION_CANCEL:
244 | mTouchingScrollingChild = false;
245 | mActivePointerId = MotionEvent.INVALID_POINTER_ID;
246 | // Reset the ignore flag
247 | if (mIgnoreEvents) {
248 | mIgnoreEvents = false;
249 | return false;
250 | }
251 | break;
252 | case MotionEvent.ACTION_DOWN:
253 | int initialX = (int) event.getX();
254 | mInitialY = (int) event.getY();
255 | View scroll = mNestedScrollingChildRef.get();
256 | if (scroll != null && parent.isPointInChildBounds(scroll, initialX, mInitialY)) {
257 | mActivePointerId = event.getPointerId(event.getActionIndex());
258 | mTouchingScrollingChild = true;
259 | }
260 | mIgnoreEvents = mActivePointerId == MotionEvent.INVALID_POINTER_ID &&
261 | !parent.isPointInChildBounds(child, initialX, mInitialY);
262 | break;
263 | }
264 | if (!mIgnoreEvents && mViewDragHelper.shouldInterceptTouchEvent(event)) {
265 | return true;
266 | }
267 | // We have to handle cases that the ViewDragHelper does not capture the bottom sheet because
268 | // it is not the top most view of its parent. This is not necessary when the touch event is
269 | // happening over the scrolling content as nested scrolling logic handles that case.
270 | View scroll = mNestedScrollingChildRef.get();
271 | return action == MotionEvent.ACTION_MOVE && scroll != null &&
272 | !mIgnoreEvents && mState != STATE_DRAGGING &&
273 | !parent.isPointInChildBounds(scroll, (int) event.getX(), (int) event.getY()) &&
274 | Math.abs(mInitialY - event.getY()) > mViewDragHelper.getTouchSlop();
275 | }
276 |
277 | @Override
278 | public boolean onTouchEvent(CoordinatorLayout parent, V child, MotionEvent event) {
279 | if (!child.isShown()) {
280 | return false;
281 | }
282 | int action = MotionEventCompat.getActionMasked(event);
283 | if (mState == STATE_DRAGGING && action == MotionEvent.ACTION_DOWN) {
284 | return true;
285 | }
286 | if (mViewDragHelper != null) {
287 | mViewDragHelper.processTouchEvent(event);
288 | }
289 | // Record the velocity
290 | if (action == MotionEvent.ACTION_DOWN) {
291 | reset();
292 | }
293 | if (mVelocityTracker == null) {
294 | mVelocityTracker = VelocityTracker.obtain();
295 | }
296 | mVelocityTracker.addMovement(event);
297 | // The ViewDragHelper tries to capture only the top-most View. We have to explicitly tell it
298 | // to capture the bottom sheet in case it is not captured and the touch slop is passed.
299 | if (action == MotionEvent.ACTION_MOVE && !mIgnoreEvents) {
300 | if (Math.abs(mInitialY - event.getY()) > mViewDragHelper.getTouchSlop()) {
301 | mViewDragHelper.captureChildView(child, event.getPointerId(event.getActionIndex()));
302 | }
303 | }
304 | return !mIgnoreEvents;
305 | }
306 |
307 | @Override
308 | public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, V child,
309 | View directTargetChild, View target, int nestedScrollAxes) {
310 | mLastNestedScrollDy = 0;
311 | mNestedScrolled = false;
312 | return (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0;
313 | }
314 |
315 | @Override
316 | public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, V child, View target, int dx,
317 | int dy, int[] consumed) {
318 | View scrollingChild = mNestedScrollingChildRef.get();
319 | if (target != scrollingChild) {
320 | return;
321 | }
322 | int currentTop = child.getTop();
323 | int newTop = currentTop - dy;
324 | if (dy > 0) { // Upward
325 | if (!ViewCompat.canScrollVertically(target, 1)) {
326 | if (newTop >= mMinOffset || mHideable) {
327 | consumed[1] = dy;
328 | ViewCompat.offsetTopAndBottom(child, -dy);
329 | setStateInternal(STATE_DRAGGING);
330 | } else {
331 | consumed[1] = currentTop - mMinOffset;
332 | ViewCompat.offsetTopAndBottom(child, -consumed[1]);
333 | setStateInternal(STATE_COLLAPSED);
334 | }
335 | }
336 | } else if (dy < 0) { // Downward
337 | // Negative to check scrolling up, positive to check scrolling down
338 | if (newTop < mMaxOffset) {
339 | consumed[1] = dy;
340 | ViewCompat.offsetTopAndBottom(child, -dy);
341 | setStateInternal(STATE_DRAGGING);
342 | } else {
343 | consumed[1] = currentTop - mMaxOffset;
344 | ViewCompat.offsetTopAndBottom(child, -consumed[1]);
345 | setStateInternal(STATE_EXPANDED);
346 | }
347 | }
348 | dispatchOnSlide(child.getTop());
349 | mLastNestedScrollDy = dy;
350 | mNestedScrolled = true;
351 | }
352 |
353 | @Override
354 | public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, V child, View target) {
355 | if (child.getTop() == mMaxOffset) {
356 | setStateInternal(STATE_EXPANDED);
357 | return;
358 | }
359 | if (target != mNestedScrollingChildRef.get() || !mNestedScrolled) {
360 | return;
361 | }
362 | int top;
363 | int targetState;
364 | if (mLastNestedScrollDy < 0) {
365 | top = mMaxOffset;
366 | targetState = STATE_EXPANDED;
367 | } else if (mHideable && shouldHide(child, getYVelocity())) {
368 | top = -child.getHeight();
369 | targetState = STATE_HIDDEN;
370 | } else if (mLastNestedScrollDy == 0) {
371 | int currentTop = child.getTop();
372 | if (Math.abs(currentTop - mMinOffset) > Math.abs(currentTop - mMaxOffset)) {
373 | top = mMaxOffset;
374 | targetState = STATE_EXPANDED;
375 | } else {
376 | top = mMinOffset;
377 | targetState = STATE_COLLAPSED;
378 | }
379 | } else {
380 | top = mMinOffset;
381 | targetState = STATE_COLLAPSED;
382 | }
383 | if (mViewDragHelper.smoothSlideViewTo(child, child.getLeft(), top)) {
384 | setStateInternal(STATE_SETTLING);
385 | ViewCompat.postOnAnimation(child, new SettleRunnable(child, targetState));
386 | } else {
387 | setStateInternal(targetState);
388 | }
389 | mNestedScrolled = false;
390 | }
391 |
392 | @Override
393 | public boolean onNestedPreFling(CoordinatorLayout coordinatorLayout, V child, View target,
394 | float velocityX, float velocityY) {
395 | return target == mNestedScrollingChildRef.get() &&
396 | (mState != STATE_EXPANDED ||
397 | super.onNestedPreFling(coordinatorLayout, child, target,
398 | velocityX, velocityY));
399 | }
400 |
401 | /**
402 | * Sets the height of the bottom sheet when it is collapsed.
403 | *
404 | * @param peekHeight The height of the collapsed bottom sheet in pixels.
405 | * @attr ref android.support.design.R.styleable#TopSheetBehavior_Params_behavior_peekHeight
406 | */
407 | public final void setPeekHeight(int peekHeight) {
408 | mPeekHeight = Math.max(0, peekHeight);
409 | // mMaxOffset = mParentHeight - peekHeight;
410 | if (mViewRef != null && mViewRef.get() != null) {
411 | mMinOffset = Math.max(-mViewRef.get().getHeight(), -(mViewRef.get().getHeight() - mPeekHeight));
412 | }
413 | }
414 |
415 | /**
416 | * Gets the height of the bottom sheet when it is collapsed.
417 | *
418 | * @return The height of the collapsed bottom sheet.
419 | * @attr ref android.support.design.R.styleable#BottomSheetBehavior_Layout_behavior_peekHeight
420 | */
421 | public final int getPeekHeight() {
422 | return mPeekHeight;
423 | }
424 |
425 | /**
426 | * Sets whether this bottom sheet can hide when it is swiped down.
427 | *
428 | * @param hideable {@code true} to make this bottom sheet hideable.
429 | * @attr ref android.support.design.R.styleable#BottomSheetBehavior_Layout_behavior_hideable
430 | */
431 | public void setHideable(boolean hideable) {
432 | mHideable = hideable;
433 | }
434 |
435 | /**
436 | * Gets whether this bottom sheet can hide when it is swiped down.
437 | *
438 | * @return {@code true} if this bottom sheet can hide.
439 | * @attr ref android.support.design.R.styleable#BottomSheetBehavior_Layout_behavior_hideable
440 | */
441 | public boolean isHideable() {
442 | return mHideable;
443 | }
444 |
445 | /**
446 | * Sets whether this bottom sheet should skip the collapsed state when it is being hidden
447 | * after it is expanded once. Setting this to true has no effect unless the sheet is hideable.
448 | *
449 | * @param skipCollapsed True if the bottom sheet should skip the collapsed state.
450 | * @attr ref android.support.design.R.styleable#BottomSheetBehavior_Layout_behavior_skipCollapsed
451 | */
452 | public void setSkipCollapsed(boolean skipCollapsed) {
453 | mSkipCollapsed = skipCollapsed;
454 | }
455 |
456 | /**
457 | * Sets whether this bottom sheet should skip the collapsed state when it is being hidden
458 | * after it is expanded once.
459 | *
460 | * @return Whether the bottom sheet should skip the collapsed state.
461 | * @attr ref android.support.design.R.styleable#BottomSheetBehavior_Layout_behavior_skipCollapsed
462 | */
463 | public boolean getSkipCollapsed() {
464 | return mSkipCollapsed;
465 | }
466 |
467 | /**
468 | * Sets a callback to be notified of bottom sheet events.
469 | *
470 | * @param callback The callback to notify when bottom sheet events occur.
471 | */
472 | public void setTopSheetCallback(TopSheetCallback callback) {
473 | mCallback = callback;
474 | }
475 |
476 | /**
477 | * Sets the state of the bottom sheet. The bottom sheet will transition to that state with
478 | * animation.
479 | *
480 | * @param state One of {@link #STATE_COLLAPSED}, {@link #STATE_EXPANDED}, or
481 | * {@link #STATE_HIDDEN}.
482 | */
483 | public final void setState(@State int state) {
484 | if (state == mState) {
485 | return;
486 | }
487 | if (mViewRef == null) {
488 | // The view is not laid out yet; modify mState and let onLayoutChild handle it later
489 | if (state == STATE_COLLAPSED || state == STATE_EXPANDED ||
490 | (mHideable && state == STATE_HIDDEN)) {
491 | mState = state;
492 | }
493 | return;
494 | }
495 | V child = mViewRef.get();
496 | if (child == null) {
497 | return;
498 | }
499 | int top;
500 | if (state == STATE_COLLAPSED) {
501 | top = mMinOffset;
502 | } else if (state == STATE_EXPANDED) {
503 | top = mMaxOffset;
504 | } else if (mHideable && state == STATE_HIDDEN) {
505 | top = -child.getHeight();
506 | } else {
507 | throw new IllegalArgumentException("Illegal state argument: " + state);
508 | }
509 | setStateInternal(STATE_SETTLING);
510 | if (mViewDragHelper.smoothSlideViewTo(child, child.getLeft(), top)) {
511 | ViewCompat.postOnAnimation(child, new SettleRunnable(child, state));
512 | }
513 | }
514 |
515 | /**
516 | * Gets the current state of the bottom sheet.
517 | *
518 | * @return One of {@link #STATE_EXPANDED}, {@link #STATE_COLLAPSED}, {@link #STATE_DRAGGING},
519 | * and {@link #STATE_SETTLING}.
520 | */
521 | @State
522 | public final int getState() {
523 | return mState;
524 | }
525 |
526 | private void setStateInternal(@State int state) {
527 | if (mState == state) {
528 | return;
529 | }
530 | mState = state;
531 | View bottomSheet = mViewRef.get();
532 | if (bottomSheet != null && mCallback != null) {
533 | mCallback.onStateChanged(bottomSheet, state);
534 | }
535 | }
536 |
537 | private void reset() {
538 | mActivePointerId = ViewDragHelper.INVALID_POINTER;
539 | if (mVelocityTracker != null) {
540 | mVelocityTracker.recycle();
541 | mVelocityTracker = null;
542 | }
543 | }
544 |
545 | private boolean shouldHide(View child, float yvel) {
546 | if (child.getTop() > mMinOffset) {
547 | // It should not hide, but collapse.
548 | return false;
549 | }
550 | final float newTop = child.getTop() + yvel * HIDE_FRICTION;
551 | return Math.abs(newTop - mMinOffset) / (float) mPeekHeight > HIDE_THRESHOLD;
552 | }
553 |
554 | private View findScrollingChild(View view) {
555 | if (view instanceof NestedScrollingChild) {
556 | return view;
557 | }
558 | if (view instanceof ViewGroup) {
559 | ViewGroup group = (ViewGroup) view;
560 | for (int i = 0, count = group.getChildCount(); i < count; i++) {
561 | View scrollingChild = findScrollingChild(group.getChildAt(i));
562 | if (scrollingChild != null) {
563 | return scrollingChild;
564 | }
565 | }
566 | }
567 | return null;
568 | }
569 |
570 | private float getYVelocity() {
571 | mVelocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
572 | return VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId);
573 | }
574 |
575 | private final ViewDragHelper.Callback mDragCallback = new ViewDragHelper.Callback() {
576 |
577 | @Override
578 | public boolean tryCaptureView(View child, int pointerId) {
579 | if (mState == STATE_DRAGGING) {
580 | return false;
581 | }
582 | if (mTouchingScrollingChild) {
583 | return false;
584 | }
585 | if (mState == STATE_EXPANDED && mActivePointerId == pointerId) {
586 | View scroll = mNestedScrollingChildRef.get();
587 | if (scroll != null && ViewCompat.canScrollVertically(scroll, -1)) {
588 | // Let the content scroll up
589 | return false;
590 | }
591 | }
592 | return mViewRef != null && mViewRef.get() == child;
593 | }
594 |
595 | @Override
596 | public void onViewPositionChanged(View changedView, int left, int top, int dx, int dy) {
597 | dispatchOnSlide(top);
598 | }
599 |
600 | @Override
601 | public void onViewDragStateChanged(int state) {
602 | if (state == ViewDragHelper.STATE_DRAGGING) {
603 | setStateInternal(STATE_DRAGGING);
604 | }
605 | }
606 |
607 | @Override
608 | public void onViewReleased(View releasedChild, float xvel, float yvel) {
609 | int top;
610 | @State int targetState;
611 | if (yvel > 0) { // Moving up
612 | top = mMaxOffset;
613 | targetState = STATE_EXPANDED;
614 | } else if (mHideable && shouldHide(releasedChild, yvel)) {
615 | top = -mViewRef.get().getHeight();
616 | targetState = STATE_HIDDEN;
617 | } else if (yvel == 0.f) {
618 | int currentTop = releasedChild.getTop();
619 | if (Math.abs(currentTop - mMinOffset) > Math.abs(currentTop - mMaxOffset)) {
620 | top = mMaxOffset;
621 | targetState = STATE_EXPANDED;
622 | } else {
623 | top = mMinOffset;
624 | targetState = STATE_COLLAPSED;
625 | }
626 | } else {
627 | top = mMinOffset;
628 | targetState = STATE_COLLAPSED;
629 | }
630 | if (mViewDragHelper.settleCapturedViewAt(releasedChild.getLeft(), top)) {
631 | setStateInternal(STATE_SETTLING);
632 | ViewCompat.postOnAnimation(releasedChild,
633 | new SettleRunnable(releasedChild, targetState));
634 | } else {
635 | setStateInternal(targetState);
636 | }
637 | }
638 |
639 | @Override
640 | public int clampViewPositionVertical(View child, int top, int dy) {
641 | return constrain(top, mHideable ? -child.getHeight() : mMinOffset, mMaxOffset);
642 | }
643 |
644 | @Override
645 | public int clampViewPositionHorizontal(View child, int left, int dx) {
646 | return child.getLeft();
647 | }
648 |
649 | @Override
650 | public int getViewVerticalDragRange(View child) {
651 | if (mHideable) {
652 | return child.getHeight();
653 | } else {
654 | return mMaxOffset - mMinOffset;
655 | }
656 | }
657 | };
658 |
659 | private void dispatchOnSlide(int top) {
660 | View bottomSheet = mViewRef.get();
661 | if (bottomSheet != null && mCallback != null) {
662 | if (top < mMinOffset) {
663 | mCallback.onSlide(bottomSheet, (float) (top - mMinOffset) / mPeekHeight);
664 | } else {
665 | mCallback.onSlide(bottomSheet,
666 | (float) (top - mMinOffset) / ((mMaxOffset - mMinOffset)));
667 | }
668 | }
669 | }
670 |
671 | private class SettleRunnable implements Runnable {
672 |
673 | private final View mView;
674 |
675 | @State
676 | private final int mTargetState;
677 |
678 | SettleRunnable(View view, @State int targetState) {
679 | mView = view;
680 | mTargetState = targetState;
681 | }
682 |
683 | @Override
684 | public void run() {
685 | if (mViewDragHelper != null && mViewDragHelper.continueSettling(true)) {
686 | ViewCompat.postOnAnimation(mView, this);
687 | } else {
688 | setStateInternal(mTargetState);
689 | }
690 | }
691 | }
692 |
693 | protected static class SavedState extends AbsSavedState {
694 | @State
695 | final int state;
696 |
697 | public SavedState(Parcel source) {
698 | this(source, null);
699 | }
700 |
701 | public SavedState(Parcel source, ClassLoader loader) {
702 | super(source, loader);
703 | //noinspection ResourceType
704 | state = source.readInt();
705 | }
706 |
707 | public SavedState(Parcelable superState, @State int state) {
708 | super(superState);
709 | this.state = state;
710 | }
711 |
712 | @Override
713 | public void writeToParcel(Parcel out, int flags) {
714 | super.writeToParcel(out, flags);
715 | out.writeInt(state);
716 | }
717 |
718 | public static final Creator CREATOR = ParcelableCompat.newCreator(
719 | new ParcelableCompatCreatorCallbacks() {
720 | @Override
721 | public SavedState createFromParcel(Parcel in, ClassLoader loader) {
722 | return new SavedState(in, loader);
723 | }
724 |
725 | @Override
726 | public SavedState[] newArray(int size) {
727 | return new SavedState[size];
728 | }
729 | });
730 | }
731 |
732 | /**
733 | * A utility function to get the {@link TopSheetBehavior} associated with the {@code view}.
734 | *
735 | * @param view The {@link View} with {@link TopSheetBehavior}.
736 | * @return The {@link TopSheetBehavior} associated with the {@code view}.
737 | */
738 | @SuppressWarnings("unchecked")
739 | public static TopSheetBehavior from(V view) {
740 | ViewGroup.LayoutParams params = view.getLayoutParams();
741 | if (!(params instanceof CoordinatorLayout.LayoutParams)) {
742 | throw new IllegalArgumentException("The view is not a child of CoordinatorLayout");
743 | }
744 | CoordinatorLayout.Behavior behavior = ((CoordinatorLayout.LayoutParams) params)
745 | .getBehavior();
746 | if (!(behavior instanceof TopSheetBehavior)) {
747 | throw new IllegalArgumentException(
748 | "The view is not associated with TopSheetBehavior");
749 | }
750 | return (TopSheetBehavior) behavior;
751 | }
752 |
753 | static int constrain(int amount, int low, int high) {
754 | return amount < low ? low : (amount > high ? high : amount);
755 | }
756 |
757 | static float constrain(float amount, float low, float high) {
758 | return amount < low ? low : (amount > high ? high : amount);
759 | }
760 | }
761 |
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