();
private final int[] mTempMargins = new int[2];
private OnMenuItemClickListener mOnMenuItemClickListener;
private final ActionMenuView.OnMenuItemClickListener mMenuViewItemClickListener =
new ActionMenuView.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
if (mOnMenuItemClickListener != null) {
return mOnMenuItemClickListener.onMenuItemClick(item);
}
return false;
}
};
private ToolbarWidgetWrapper mWrapper;
private ActionMenuPresenter mOuterActionMenuPresenter;
private ExpandedActionViewMenuPresenter mExpandedMenuPresenter;
private MenuPresenter.Callback mActionMenuPresenterCallback;
private MenuBuilder.Callback mMenuBuilderCallback;
private boolean mCollapsible;
private final Runnable mShowOverflowMenuRunnable = new Runnable() {
@Override public void run() {
showOverflowMenu();
}
};
public Toolbar(Context context) {
this(context, null);
}
public Toolbar(Context context, AttributeSet attrs) {
this(context, attrs, com.android.internal.R.attr.toolbarStyle);
}
public Toolbar(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public Toolbar(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Toolbar,
defStyleAttr, defStyleRes);
mTitleTextAppearance = a.getResourceId(R.styleable.Toolbar_titleTextAppearance, 0);
mSubtitleTextAppearance = a.getResourceId(R.styleable.Toolbar_subtitleTextAppearance, 0);
mNavButtonStyle = a.getResourceId(R.styleable.Toolbar_navigationButtonStyle, 0);
mGravity = a.getInteger(R.styleable.Toolbar_gravity, mGravity);
mButtonGravity = a.getInteger(R.styleable.Toolbar_buttonGravity, Gravity.TOP);
mTitleMarginStart = mTitleMarginEnd = mTitleMarginTop = mTitleMarginBottom =
a.getDimensionPixelOffset(R.styleable.Toolbar_titleMargins, 0);
final int marginStart = a.getDimensionPixelOffset(R.styleable.Toolbar_titleMarginStart, -1);
if (marginStart >= 0) {
mTitleMarginStart = marginStart;
}
final int marginEnd = a.getDimensionPixelOffset(R.styleable.Toolbar_titleMarginEnd, -1);
if (marginEnd >= 0) {
mTitleMarginEnd = marginEnd;
}
final int marginTop = a.getDimensionPixelOffset(R.styleable.Toolbar_titleMarginTop, -1);
if (marginTop >= 0) {
mTitleMarginTop = marginTop;
}
final int marginBottom = a.getDimensionPixelOffset(R.styleable.Toolbar_titleMarginBottom,
-1);
if (marginBottom >= 0) {
mTitleMarginBottom = marginBottom;
}
mMaxButtonHeight = a.getDimensionPixelSize(R.styleable.Toolbar_maxButtonHeight, -1);
final int contentInsetStart =
a.getDimensionPixelOffset(R.styleable.Toolbar_contentInsetStart,
RtlSpacingHelper.UNDEFINED);
final int contentInsetEnd =
a.getDimensionPixelOffset(R.styleable.Toolbar_contentInsetEnd,
RtlSpacingHelper.UNDEFINED);
final int contentInsetLeft =
a.getDimensionPixelSize(R.styleable.Toolbar_contentInsetLeft, 0);
final int contentInsetRight =
a.getDimensionPixelSize(R.styleable.Toolbar_contentInsetRight, 0);
mContentInsets.setAbsolute(contentInsetLeft, contentInsetRight);
if (contentInsetStart != RtlSpacingHelper.UNDEFINED ||
contentInsetEnd != RtlSpacingHelper.UNDEFINED) {
mContentInsets.setRelative(contentInsetStart, contentInsetEnd);
}
mCollapseIcon = a.getDrawable(R.styleable.Toolbar_collapseIcon);
mCollapseDescription = a.getText(R.styleable.Toolbar_collapseContentDescription);
final CharSequence title = a.getText(R.styleable.Toolbar_title);
if (!TextUtils.isEmpty(title)) {
setTitle(title);
}
final CharSequence subtitle = a.getText(R.styleable.Toolbar_subtitle);
if (!TextUtils.isEmpty(subtitle)) {
setSubtitle(subtitle);
}
// Set the default context, since setPopupTheme() may be a no-op.
mPopupContext = mContext;
setPopupTheme(a.getResourceId(R.styleable.Toolbar_popupTheme, 0));
final Drawable navIcon = a.getDrawable(R.styleable.Toolbar_navigationIcon);
if (navIcon != null) {
setNavigationIcon(navIcon);
}
final CharSequence navDesc = a.getText(
R.styleable.Toolbar_navigationContentDescription);
if (!TextUtils.isEmpty(navDesc)) {
setNavigationContentDescription(navDesc);
}
a.recycle();
}
/**
* Specifies the theme to use when inflating popup menus. By default, uses
* the same theme as the toolbar itself.
*
* @param resId theme used to inflate popup menus
* @see #getPopupTheme()
*/
public void setPopupTheme(int resId) {
if (mPopupTheme != resId) {
mPopupTheme = resId;
if (resId == 0) {
mPopupContext = mContext;
} else {
mPopupContext = new ContextThemeWrapper(mContext, resId);
}
}
}
/**
* @return resource identifier of the theme used to inflate popup menus, or
* 0 if menus are inflated against the toolbar theme
* @see #setPopupTheme(int)
*/
public int getPopupTheme() {
return mPopupTheme;
}
@Override
public void onRtlPropertiesChanged(@ResolvedLayoutDir int layoutDirection) {
super.onRtlPropertiesChanged(layoutDirection);
mContentInsets.setDirection(layoutDirection == LAYOUT_DIRECTION_RTL);
}
/**
* Set a logo drawable from a resource id.
*
* This drawable should generally take the place of title text. The logo cannot be
* clicked. Apps using a logo should also supply a description using
* {@link #setLogoDescription(int)}.
*
* @param resId ID of a drawable resource
*/
public void setLogo(int resId) {
setLogo(getContext().getDrawable(resId));
}
/** @hide */
public boolean canShowOverflowMenu() {
return getVisibility() == VISIBLE && mMenuView != null && mMenuView.isOverflowReserved();
}
/**
* Check whether the overflow menu is currently showing. This may not reflect
* a pending show operation in progress.
*
* @return true if the overflow menu is currently showing
*/
public boolean isOverflowMenuShowing() {
return mMenuView != null && mMenuView.isOverflowMenuShowing();
}
/** @hide */
public boolean isOverflowMenuShowPending() {
return mMenuView != null && mMenuView.isOverflowMenuShowPending();
}
/**
* Show the overflow items from the associated menu.
*
* @return true if the menu was able to be shown, false otherwise
*/
public boolean showOverflowMenu() {
return mMenuView != null && mMenuView.showOverflowMenu();
}
/**
* Hide the overflow items from the associated menu.
*
* @return true if the menu was able to be hidden, false otherwise
*/
public boolean hideOverflowMenu() {
return mMenuView != null && mMenuView.hideOverflowMenu();
}
/** @hide */
public void setMenu(MenuBuilder menu, ActionMenuPresenter outerPresenter) {
if (menu == null && mMenuView == null) {
return;
}
ensureMenuView();
final MenuBuilder oldMenu = mMenuView.peekMenu();
if (oldMenu == menu) {
return;
}
if (oldMenu != null) {
oldMenu.removeMenuPresenter(mOuterActionMenuPresenter);
oldMenu.removeMenuPresenter(mExpandedMenuPresenter);
}
if (mExpandedMenuPresenter == null) {
mExpandedMenuPresenter = new ExpandedActionViewMenuPresenter();
}
outerPresenter.setExpandedActionViewsExclusive(true);
if (menu != null) {
menu.addMenuPresenter(outerPresenter, mPopupContext);
menu.addMenuPresenter(mExpandedMenuPresenter, mPopupContext);
} else {
outerPresenter.initForMenu(mPopupContext, null);
mExpandedMenuPresenter.initForMenu(mPopupContext, null);
outerPresenter.updateMenuView(true);
mExpandedMenuPresenter.updateMenuView(true);
}
mMenuView.setPopupTheme(mPopupTheme);
mMenuView.setPresenter(outerPresenter);
mOuterActionMenuPresenter = outerPresenter;
}
/**
* Dismiss all currently showing popup menus, including overflow or submenus.
*/
public void dismissPopupMenus() {
if (mMenuView != null) {
mMenuView.dismissPopupMenus();
}
}
/** @hide */
public boolean isTitleTruncated() {
if (mTitleTextView == null) {
return false;
}
final Layout titleLayout = mTitleTextView.getLayout();
if (titleLayout == null) {
return false;
}
final int lineCount = titleLayout.getLineCount();
for (int i = 0; i < lineCount; i++) {
if (titleLayout.getEllipsisCount(i) > 0) {
return true;
}
}
return false;
}
/**
* Set a logo drawable.
*
* This drawable should generally take the place of title text. The logo cannot be
* clicked. Apps using a logo should also supply a description using
* {@link #setLogoDescription(int)}.
*
* @param drawable Drawable to use as a logo
*/
public void setLogo(Drawable drawable) {
if (drawable != null) {
ensureLogoView();
if (mLogoView.getParent() == null) {
addSystemView(mLogoView);
updateChildVisibilityForExpandedActionView(mLogoView);
}
} else if (mLogoView != null && mLogoView.getParent() != null) {
removeView(mLogoView);
}
if (mLogoView != null) {
mLogoView.setImageDrawable(drawable);
}
}
/**
* Return the current logo drawable.
*
* @return The current logo drawable
* @see #setLogo(int)
* @see #setLogo(android.graphics.drawable.Drawable)
*/
public Drawable getLogo() {
return mLogoView != null ? mLogoView.getDrawable() : null;
}
/**
* Set a description of the toolbar's logo.
*
* This description will be used for accessibility or other similar descriptions
* of the UI.
*
* @param resId String resource id
*/
public void setLogoDescription(int resId) {
setLogoDescription(getContext().getText(resId));
}
/**
* Set a description of the toolbar's logo.
*
* This description will be used for accessibility or other similar descriptions
* of the UI.
*
* @param description Description to set
*/
public void setLogoDescription(CharSequence description) {
if (!TextUtils.isEmpty(description)) {
ensureLogoView();
}
if (mLogoView != null) {
mLogoView.setContentDescription(description);
}
}
/**
* Return the description of the toolbar's logo.
*
* @return A description of the logo
*/
public CharSequence getLogoDescription() {
return mLogoView != null ? mLogoView.getContentDescription() : null;
}
private void ensureLogoView() {
if (mLogoView == null) {
mLogoView = new ImageView(getContext());
}
}
/**
* Check whether this Toolbar is currently hosting an expanded action view.
*
* An action view may be expanded either directly from the
* {@link android.view.MenuItem MenuItem} it belongs to or by user action. If the Toolbar
* has an expanded action view it can be collapsed using the {@link #collapseActionView()}
* method.
*
* @return true if the Toolbar has an expanded action view
*/
public boolean hasExpandedActionView() {
return mExpandedMenuPresenter != null &&
mExpandedMenuPresenter.mCurrentExpandedItem != null;
}
/**
* Collapse a currently expanded action view. If this Toolbar does not have an
* expanded action view this method has no effect.
*
* An action view may be expanded either directly from the
* {@link android.view.MenuItem MenuItem} it belongs to or by user action.
*
* @see #hasExpandedActionView()
*/
public void collapseActionView() {
final MenuItemImpl item = mExpandedMenuPresenter == null ? null :
mExpandedMenuPresenter.mCurrentExpandedItem;
if (item != null) {
item.collapseActionView();
}
}
/**
* Returns the title of this toolbar.
*
* @return The current title.
*/
public CharSequence getTitle() {
return mTitleText;
}
/**
* Set the title of this toolbar.
*
* A title should be used as the anchor for a section of content. It should
* describe or name the content being viewed.
*
* @param resId Resource ID of a string to set as the title
*/
public void setTitle(int resId) {
setTitle(getContext().getText(resId));
}
/**
* Set the title of this toolbar.
*
* A title should be used as the anchor for a section of content. It should
* describe or name the content being viewed.
*
* @param title Title to set
*/
public void setTitle(CharSequence title) {
if (!TextUtils.isEmpty(title)) {
if (mTitleTextView == null) {
final Context context = getContext();
mTitleTextView = new TextView(context);
mTitleTextView.setSingleLine();
mTitleTextView.setEllipsize(TextUtils.TruncateAt.END);
if (mTitleTextAppearance != 0) {
mTitleTextView.setTextAppearance(context, mTitleTextAppearance);
}
if (mTitleTextColor != 0) {
mTitleTextView.setTextColor(mTitleTextColor);
}
}
if (mTitleTextView.getParent() == null) {
addSystemView(mTitleTextView);
updateChildVisibilityForExpandedActionView(mTitleTextView);
}
} else if (mTitleTextView != null && mTitleTextView.getParent() != null) {
removeView(mTitleTextView);
}
if (mTitleTextView != null) {
mTitleTextView.setText(title);
}
mTitleText = title;
}
/**
* Return the subtitle of this toolbar.
*
* @return The current subtitle
*/
public CharSequence getSubtitle() {
return mSubtitleText;
}
/**
* Set the subtitle of this toolbar.
*
* Subtitles should express extended information about the current content.
*
* @param resId String resource ID
*/
public void setSubtitle(int resId) {
setSubtitle(getContext().getText(resId));
}
/**
* Set the subtitle of this toolbar.
*
* Subtitles should express extended information about the current content.
*
* @param subtitle Subtitle to set
*/
public void setSubtitle(CharSequence subtitle) {
if (!TextUtils.isEmpty(subtitle)) {
if (mSubtitleTextView == null) {
final Context context = getContext();
mSubtitleTextView = new TextView(context);
mSubtitleTextView.setSingleLine();
mSubtitleTextView.setEllipsize(TextUtils.TruncateAt.END);
if (mSubtitleTextAppearance != 0) {
mSubtitleTextView.setTextAppearance(context, mSubtitleTextAppearance);
}
if (mSubtitleTextColor != 0) {
mSubtitleTextView.setTextColor(mSubtitleTextColor);
}
}
if (mSubtitleTextView.getParent() == null) {
addSystemView(mSubtitleTextView);
updateChildVisibilityForExpandedActionView(mSubtitleTextView);
}
} else if (mSubtitleTextView != null && mSubtitleTextView.getParent() != null) {
removeView(mSubtitleTextView);
}
if (mSubtitleTextView != null) {
mSubtitleTextView.setText(subtitle);
}
mSubtitleText = subtitle;
}
/**
* Sets the text color, size, style, hint color, and highlight color
* from the specified TextAppearance resource.
*/
public void setTitleTextAppearance(Context context, int resId) {
mTitleTextAppearance = resId;
if (mTitleTextView != null) {
mTitleTextView.setTextAppearance(context, resId);
}
}
/**
* Sets the text color, size, style, hint color, and highlight color
* from the specified TextAppearance resource.
*/
public void setSubtitleTextAppearance(Context context, int resId) {
mSubtitleTextAppearance = resId;
if (mSubtitleTextView != null) {
mSubtitleTextView.setTextAppearance(context, resId);
}
}
/**
* Sets the text color of the title, if present.
*
* @param color The new text color in 0xAARRGGBB format
*/
public void setTitleTextColor(int color) {
mTitleTextColor = color;
if (mTitleTextView != null) {
mTitleTextView.setTextColor(color);
}
}
/**
* Sets the text color of the subtitle, if present.
*
* @param color The new text color in 0xAARRGGBB format
*/
public void setSubtitleTextColor(int color) {
mSubtitleTextColor = color;
if (mSubtitleTextView != null) {
mSubtitleTextView.setTextColor(color);
}
}
/**
* Retrieve the currently configured content description for the navigation button view.
* This will be used to describe the navigation action to users through mechanisms such
* as screen readers or tooltips.
*
* @return The navigation button's content description
*
* @attr ref android.R.styleable#Toolbar_navigationContentDescription
*/
@Nullable
public CharSequence getNavigationContentDescription() {
return mNavButtonView != null ? mNavButtonView.getContentDescription() : null;
}
/**
* Set a content description for the navigation button if one is present. The content
* description will be read via screen readers or other accessibility systems to explain
* the action of the navigation button.
*
* @param resId Resource ID of a content description string to set, or 0 to
* clear the description
*
* @attr ref android.R.styleable#Toolbar_navigationContentDescription
*/
public void setNavigationContentDescription(int resId) {
setNavigationContentDescription(resId != 0 ? getContext().getText(resId) : null);
}
/**
* Set a content description for the navigation button if one is present. The content
* description will be read via screen readers or other accessibility systems to explain
* the action of the navigation button.
*
* @param description Content description to set, or null to
* clear the content description
*
* @attr ref android.R.styleable#Toolbar_navigationContentDescription
*/
public void setNavigationContentDescription(@Nullable CharSequence description) {
if (!TextUtils.isEmpty(description)) {
ensureNavButtonView();
}
if (mNavButtonView != null) {
mNavButtonView.setContentDescription(description);
}
}
/**
* Set the icon to use for the toolbar's navigation button.
*
* The navigation button appears at the start of the toolbar if present. Setting an icon
* will make the navigation button visible.
*
* If you use a navigation icon you should also set a description for its action using
* {@link #setNavigationContentDescription(int)}. This is used for accessibility and
* tooltips.
*
* @param resId Resource ID of a drawable to set
*
* @attr ref android.R.styleable#Toolbar_navigationIcon
*/
public void setNavigationIcon(int resId) {
setNavigationIcon(getContext().getDrawable(resId));
}
/**
* Set the icon to use for the toolbar's navigation button.
*
* The navigation button appears at the start of the toolbar if present. Setting an icon
* will make the navigation button visible.
*
* If you use a navigation icon you should also set a description for its action using
* {@link #setNavigationContentDescription(int)}. This is used for accessibility and
* tooltips.
*
* @param icon Drawable to set, may be null to clear the icon
*
* @attr ref android.R.styleable#Toolbar_navigationIcon
*/
public void setNavigationIcon(@Nullable Drawable icon) {
if (icon != null) {
ensureNavButtonView();
if (mNavButtonView.getParent() == null) {
addSystemView(mNavButtonView);
updateChildVisibilityForExpandedActionView(mNavButtonView);
}
} else if (mNavButtonView != null && mNavButtonView.getParent() != null) {
removeView(mNavButtonView);
}
if (mNavButtonView != null) {
mNavButtonView.setImageDrawable(icon);
}
}
/**
* Return the current drawable used as the navigation icon.
*
* @return The navigation icon drawable
*
* @attr ref android.R.styleable#Toolbar_navigationIcon
*/
@Nullable
public Drawable getNavigationIcon() {
return mNavButtonView != null ? mNavButtonView.getDrawable() : null;
}
/**
* Set a listener to respond to navigation events.
*
* This listener will be called whenever the user clicks the navigation button
* at the start of the toolbar. An icon must be set for the navigation button to appear.
*
* @param listener Listener to set
* @see #setNavigationIcon(android.graphics.drawable.Drawable)
*/
public void setNavigationOnClickListener(OnClickListener listener) {
ensureNavButtonView();
mNavButtonView.setOnClickListener(listener);
}
/**
* Return the Menu shown in the toolbar.
*
* Applications that wish to populate the toolbar's menu can do so from here. To use
* an XML menu resource, use {@link #inflateMenu(int)}.
*
* @return The toolbar's Menu
*/
public Menu getMenu() {
ensureMenu();
return mMenuView.getMenu();
}
private void ensureMenu() {
ensureMenuView();
if (mMenuView.peekMenu() == null) {
// Initialize a new menu for the first time.
final MenuBuilder menu = (MenuBuilder) mMenuView.getMenu();
if (mExpandedMenuPresenter == null) {
mExpandedMenuPresenter = new ExpandedActionViewMenuPresenter();
}
mMenuView.setExpandedActionViewsExclusive(true);
menu.addMenuPresenter(mExpandedMenuPresenter, mPopupContext);
}
}
private void ensureMenuView() {
if (mMenuView == null) {
mMenuView = new ActionMenuView(getContext());
mMenuView.setPopupTheme(mPopupTheme);
mMenuView.setOnMenuItemClickListener(mMenuViewItemClickListener);
mMenuView.setMenuCallbacks(mActionMenuPresenterCallback, mMenuBuilderCallback);
final LayoutParams lp = generateDefaultLayoutParams();
lp.gravity = Gravity.END | (mButtonGravity & Gravity.VERTICAL_GRAVITY_MASK);
mMenuView.setLayoutParams(lp);
addSystemView(mMenuView);
}
}
private MenuInflater getMenuInflater() {
return new MenuInflater(getContext());
}
/**
* Inflate a menu resource into this toolbar.
*
* Inflate an XML menu resource into this toolbar. Existing items in the menu will not
* be modified or removed.
*
* @param resId ID of a menu resource to inflate
*/
public void inflateMenu(int resId) {
getMenuInflater().inflate(resId, getMenu());
}
/**
* Set a listener to respond to menu item click events.
*
* This listener will be invoked whenever a user selects a menu item from
* the action buttons presented at the end of the toolbar or the associated overflow.
*
* @param listener Listener to set
*/
public void setOnMenuItemClickListener(OnMenuItemClickListener listener) {
mOnMenuItemClickListener = listener;
}
/**
* Set the content insets for this toolbar relative to layout direction.
*
* The content inset affects the valid area for Toolbar content other than
* the navigation button and menu. Insets define the minimum margin for these components
* and can be used to effectively align Toolbar content along well-known gridlines.
*
* @param contentInsetStart Content inset for the toolbar starting edge
* @param contentInsetEnd Content inset for the toolbar ending edge
*
* @see #setContentInsetsAbsolute(int, int)
* @see #getContentInsetStart()
* @see #getContentInsetEnd()
* @see #getContentInsetLeft()
* @see #getContentInsetRight()
*/
public void setContentInsetsRelative(int contentInsetStart, int contentInsetEnd) {
mContentInsets.setRelative(contentInsetStart, contentInsetEnd);
}
/**
* Get the starting content inset for this toolbar.
*
* The content inset affects the valid area for Toolbar content other than
* the navigation button and menu. Insets define the minimum margin for these components
* and can be used to effectively align Toolbar content along well-known gridlines.
*
* @return The starting content inset for this toolbar
*
* @see #setContentInsetsRelative(int, int)
* @see #setContentInsetsAbsolute(int, int)
* @see #getContentInsetEnd()
* @see #getContentInsetLeft()
* @see #getContentInsetRight()
*/
public int getContentInsetStart() {
return mContentInsets.getStart();
}
/**
* Get the ending content inset for this toolbar.
*
* The content inset affects the valid area for Toolbar content other than
* the navigation button and menu. Insets define the minimum margin for these components
* and can be used to effectively align Toolbar content along well-known gridlines.
*
* @return The ending content inset for this toolbar
*
* @see #setContentInsetsRelative(int, int)
* @see #setContentInsetsAbsolute(int, int)
* @see #getContentInsetStart()
* @see #getContentInsetLeft()
* @see #getContentInsetRight()
*/
public int getContentInsetEnd() {
return mContentInsets.getEnd();
}
/**
* Set the content insets for this toolbar.
*
* The content inset affects the valid area for Toolbar content other than
* the navigation button and menu. Insets define the minimum margin for these components
* and can be used to effectively align Toolbar content along well-known gridlines.
*
* @param contentInsetLeft Content inset for the toolbar's left edge
* @param contentInsetRight Content inset for the toolbar's right edge
*
* @see #setContentInsetsAbsolute(int, int)
* @see #getContentInsetStart()
* @see #getContentInsetEnd()
* @see #getContentInsetLeft()
* @see #getContentInsetRight()
*/
public void setContentInsetsAbsolute(int contentInsetLeft, int contentInsetRight) {
mContentInsets.setAbsolute(contentInsetLeft, contentInsetRight);
}
/**
* Get the left content inset for this toolbar.
*
* The content inset affects the valid area for Toolbar content other than
* the navigation button and menu. Insets define the minimum margin for these components
* and can be used to effectively align Toolbar content along well-known gridlines.
*
* @return The left content inset for this toolbar
*
* @see #setContentInsetsRelative(int, int)
* @see #setContentInsetsAbsolute(int, int)
* @see #getContentInsetStart()
* @see #getContentInsetEnd()
* @see #getContentInsetRight()
*/
public int getContentInsetLeft() {
return mContentInsets.getLeft();
}
/**
* Get the right content inset for this toolbar.
*
* The content inset affects the valid area for Toolbar content other than
* the navigation button and menu. Insets define the minimum margin for these components
* and can be used to effectively align Toolbar content along well-known gridlines.
*
* @return The right content inset for this toolbar
*
* @see #setContentInsetsRelative(int, int)
* @see #setContentInsetsAbsolute(int, int)
* @see #getContentInsetStart()
* @see #getContentInsetEnd()
* @see #getContentInsetLeft()
*/
public int getContentInsetRight() {
return mContentInsets.getRight();
}
private void ensureNavButtonView() {
if (mNavButtonView == null) {
mNavButtonView = new ImageButton(getContext(), null, 0, mNavButtonStyle);
final LayoutParams lp = generateDefaultLayoutParams();
lp.gravity = Gravity.START | (mButtonGravity & Gravity.VERTICAL_GRAVITY_MASK);
mNavButtonView.setLayoutParams(lp);
}
}
private void ensureCollapseButtonView() {
if (mCollapseButtonView == null) {
mCollapseButtonView = new ImageButton(getContext(), null, 0, mNavButtonStyle);
mCollapseButtonView.setImageDrawable(mCollapseIcon);
mCollapseButtonView.setContentDescription(mCollapseDescription);
final LayoutParams lp = generateDefaultLayoutParams();
lp.gravity = Gravity.START | (mButtonGravity & Gravity.VERTICAL_GRAVITY_MASK);
lp.mViewType = LayoutParams.EXPANDED;
mCollapseButtonView.setLayoutParams(lp);
mCollapseButtonView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
collapseActionView();
}
});
}
}
private void addSystemView(View v) {
final ViewGroup.LayoutParams vlp = v.getLayoutParams();
final LayoutParams lp;
if (vlp == null) {
lp = generateDefaultLayoutParams();
} else if (!checkLayoutParams(vlp)) {
lp = generateLayoutParams(vlp);
} else {
lp = (LayoutParams) vlp;
}
lp.mViewType = LayoutParams.SYSTEM;
addView(v, lp);
}
@Override
protected Parcelable onSaveInstanceState() {
SavedState state = new SavedState(super.onSaveInstanceState());
if (mExpandedMenuPresenter != null && mExpandedMenuPresenter.mCurrentExpandedItem != null) {
state.expandedMenuItemId = mExpandedMenuPresenter.mCurrentExpandedItem.getItemId();
}
state.isOverflowOpen = isOverflowMenuShowing();
return state;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
final SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
final Menu menu = mMenuView != null ? mMenuView.peekMenu() : null;
if (ss.expandedMenuItemId != 0 && mExpandedMenuPresenter != null && menu != null) {
final MenuItem item = menu.findItem(ss.expandedMenuItemId);
if (item != null) {
item.expandActionView();
}
}
if (ss.isOverflowOpen) {
postShowOverflowMenu();
}
}
private void postShowOverflowMenu() {
removeCallbacks(mShowOverflowMenuRunnable);
post(mShowOverflowMenuRunnable);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
removeCallbacks(mShowOverflowMenuRunnable);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
// Toolbars always eat touch events, but should still respect the touch event dispatch
// contract. If the normal View implementation doesn't want the events, we'll just silently
// eat the rest of the gesture without reporting the events to the default implementation
// since that's what it expects.
final int action = ev.getActionMasked();
if (action == MotionEvent.ACTION_DOWN) {
mEatingTouch = false;
}
if (!mEatingTouch) {
final boolean handled = super.onTouchEvent(ev);
if (action == MotionEvent.ACTION_DOWN && !handled) {
mEatingTouch = true;
}
}
if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) {
mEatingTouch = false;
}
return true;
}
/**
* @hide
*/
@Override
public void addClickableRectsForAccessibility(List outRects) {
// This class always consumes touch events, therefore if it
// covers a view we do not want to send a click over it.
RectF bounds = new RectF();
bounds.set(0, 0, getWidth(), getHeight());
outRects.add(bounds);
}
/**
* @hide
*/
@Override
protected void onSetLayoutParams(View child, ViewGroup.LayoutParams lp) {
/*
* Apps may set ActionBar.LayoutParams on their action bar custom views when
* a Toolbar is actually acting in the role of the action bar. Perform a quick
* switch with Toolbar.LayoutParams whenever this happens. This does leave open
* one potential gotcha: if an app retains the ActionBar.LayoutParams reference
* and attempts to keep making changes to it before layout those changes won't
* be reflected in the final results.
*/
if (!checkLayoutParams(lp)) {
child.setLayoutParams(generateLayoutParams(lp));
}
}
private void measureChildConstrained(View child, int parentWidthSpec, int widthUsed,
int parentHeightSpec, int heightUsed, int heightConstraint) {
final MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams();
int childWidthSpec = getChildMeasureSpec(parentWidthSpec,
mPaddingLeft + mPaddingRight + lp.leftMargin + lp.rightMargin
+ widthUsed, lp.width);
int childHeightSpec = getChildMeasureSpec(parentHeightSpec,
mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin
+ heightUsed, lp.height);
final int childHeightMode = MeasureSpec.getMode(childHeightSpec);
if (childHeightMode != MeasureSpec.EXACTLY && heightConstraint >= 0) {
final int size = childHeightMode != MeasureSpec.UNSPECIFIED ?
Math.min(MeasureSpec.getSize(childHeightSpec), heightConstraint) :
heightConstraint;
childHeightSpec = MeasureSpec.makeMeasureSpec(size, MeasureSpec.EXACTLY);
}
child.measure(childWidthSpec, childHeightSpec);
}
/**
* Returns the width + uncollapsed margins
*/
private int measureChildCollapseMargins(View child,
int parentWidthMeasureSpec, int widthUsed,
int parentHeightMeasureSpec, int heightUsed, int[] collapsingMargins) {
final MarginLayoutParams lp = (MarginLayoutParams) child.getLayoutParams();
final int leftDiff = lp.leftMargin - collapsingMargins[0];
final int rightDiff = lp.rightMargin - collapsingMargins[1];
final int leftMargin = Math.max(0, leftDiff);
final int rightMargin = Math.max(0, rightDiff);
final int hMargins = leftMargin + rightMargin;
collapsingMargins[0] = Math.max(0, -leftDiff);
collapsingMargins[1] = Math.max(0, -rightDiff);
final int childWidthMeasureSpec = getChildMeasureSpec(parentWidthMeasureSpec,
mPaddingLeft + mPaddingRight + hMargins + widthUsed, lp.width);
final int childHeightMeasureSpec = getChildMeasureSpec(parentHeightMeasureSpec,
mPaddingTop + mPaddingBottom + lp.topMargin + lp.bottomMargin
+ heightUsed, lp.height);
child.measure(childWidthMeasureSpec, childHeightMeasureSpec);
return child.getMeasuredWidth() + hMargins;
}
/**
* Returns true if the Toolbar is collapsible and has no child views with a measured size > 0.
*/
private boolean shouldCollapse() {
if (!mCollapsible) return false;
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
if (shouldLayout(child) && child.getMeasuredWidth() > 0 &&
child.getMeasuredHeight() > 0) {
return false;
}
}
return true;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = 0;
int height = 0;
int childState = 0;
final int[] collapsingMargins = mTempMargins;
final int marginStartIndex;
final int marginEndIndex;
if (isLayoutRtl()) {
marginStartIndex = 1;
marginEndIndex = 0;
} else {
marginStartIndex = 0;
marginEndIndex = 1;
}
// System views measure first.
int navWidth = 0;
if (shouldLayout(mNavButtonView)) {
measureChildConstrained(mNavButtonView, widthMeasureSpec, width, heightMeasureSpec, 0,
mMaxButtonHeight);
navWidth = mNavButtonView.getMeasuredWidth() + getHorizontalMargins(mNavButtonView);
height = Math.max(height, mNavButtonView.getMeasuredHeight() +
getVerticalMargins(mNavButtonView));
childState = combineMeasuredStates(childState, mNavButtonView.getMeasuredState());
}
if (shouldLayout(mCollapseButtonView)) {
measureChildConstrained(mCollapseButtonView, widthMeasureSpec, width,
heightMeasureSpec, 0, mMaxButtonHeight);
navWidth = mCollapseButtonView.getMeasuredWidth() +
getHorizontalMargins(mCollapseButtonView);
height = Math.max(height, mCollapseButtonView.getMeasuredHeight() +
getVerticalMargins(mCollapseButtonView));
childState = combineMeasuredStates(childState, mCollapseButtonView.getMeasuredState());
}
final int contentInsetStart = getContentInsetStart();
width += Math.max(contentInsetStart, navWidth);
collapsingMargins[marginStartIndex] = Math.max(0, contentInsetStart - navWidth);
int menuWidth = 0;
if (shouldLayout(mMenuView)) {
measureChildConstrained(mMenuView, widthMeasureSpec, width, heightMeasureSpec, 0,
mMaxButtonHeight);
menuWidth = mMenuView.getMeasuredWidth() + getHorizontalMargins(mMenuView);
height = Math.max(height, mMenuView.getMeasuredHeight() +
getVerticalMargins(mMenuView));
childState = combineMeasuredStates(childState, mMenuView.getMeasuredState());
}
final int contentInsetEnd = getContentInsetEnd();
width += Math.max(contentInsetEnd, menuWidth);
collapsingMargins[marginEndIndex] = Math.max(0, contentInsetEnd - menuWidth);
if (shouldLayout(mExpandedActionView)) {
width += measureChildCollapseMargins(mExpandedActionView, widthMeasureSpec, width,
heightMeasureSpec, 0, collapsingMargins);
height = Math.max(height, mExpandedActionView.getMeasuredHeight() +
getVerticalMargins(mExpandedActionView));
childState = combineMeasuredStates(childState, mExpandedActionView.getMeasuredState());
}
if (shouldLayout(mLogoView)) {
width += measureChildCollapseMargins(mLogoView, widthMeasureSpec, width,
heightMeasureSpec, 0, collapsingMargins);
height = Math.max(height, mLogoView.getMeasuredHeight() +
getVerticalMargins(mLogoView));
childState = combineMeasuredStates(childState, mLogoView.getMeasuredState());
}
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (lp.mViewType != LayoutParams.CUSTOM || !shouldLayout(child)) {
// We already got all system views above. Skip them and GONE views.
continue;
}
width += measureChildCollapseMargins(child, widthMeasureSpec, width,
heightMeasureSpec, 0, collapsingMargins);
height = Math.max(height, child.getMeasuredHeight() + getVerticalMargins(child));
childState = combineMeasuredStates(childState, child.getMeasuredState());
}
int titleWidth = 0;
int titleHeight = 0;
final int titleVertMargins = mTitleMarginTop + mTitleMarginBottom;
final int titleHorizMargins = mTitleMarginStart + mTitleMarginEnd;
if (shouldLayout(mTitleTextView)) {
titleWidth = measureChildCollapseMargins(mTitleTextView, widthMeasureSpec,
width + titleHorizMargins, heightMeasureSpec, titleVertMargins,
collapsingMargins);
titleWidth = mTitleTextView.getMeasuredWidth() + getHorizontalMargins(mTitleTextView);
titleHeight = mTitleTextView.getMeasuredHeight() + getVerticalMargins(mTitleTextView);
childState = combineMeasuredStates(childState, mTitleTextView.getMeasuredState());
}
if (shouldLayout(mSubtitleTextView)) {
titleWidth = Math.max(titleWidth, measureChildCollapseMargins(mSubtitleTextView,
widthMeasureSpec, width + titleHorizMargins,
heightMeasureSpec, titleHeight + titleVertMargins,
collapsingMargins));
titleHeight += mSubtitleTextView.getMeasuredHeight() +
getVerticalMargins(mSubtitleTextView);
childState = combineMeasuredStates(childState, mSubtitleTextView.getMeasuredState());
}
width += titleWidth;
height = Math.max(height, titleHeight);
// Measurement already took padding into account for available space for the children,
// add it in for the final size.
width += getPaddingLeft() + getPaddingRight();
height += getPaddingTop() + getPaddingBottom();
final int measuredWidth = resolveSizeAndState(
Math.max(width, getSuggestedMinimumWidth()),
widthMeasureSpec, childState & MEASURED_STATE_MASK);
final int measuredHeight = resolveSizeAndState(
Math.max(height, getSuggestedMinimumHeight()),
heightMeasureSpec, childState << MEASURED_HEIGHT_STATE_SHIFT);
setMeasuredDimension(measuredWidth, shouldCollapse() ? 0 : measuredHeight);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
final boolean isRtl = getLayoutDirection() == LAYOUT_DIRECTION_RTL;
final int width = getWidth();
final int height = getHeight();
final int paddingLeft = getPaddingLeft();
final int paddingRight = getPaddingRight();
final int paddingTop = getPaddingTop();
final int paddingBottom = getPaddingBottom();
int left = paddingLeft;
int right = width - paddingRight;
final int[] collapsingMargins = mTempMargins;
collapsingMargins[0] = collapsingMargins[1] = 0;
// Align views within the minimum toolbar height, if set.
final int alignmentHeight = getMinimumHeight();
if (shouldLayout(mNavButtonView)) {
if (isRtl) {
right = layoutChildRight(mNavButtonView, right, collapsingMargins,
alignmentHeight);
} else {
left = layoutChildLeft(mNavButtonView, left, collapsingMargins,
alignmentHeight);
}
}
if (shouldLayout(mCollapseButtonView)) {
if (isRtl) {
right = layoutChildRight(mCollapseButtonView, right, collapsingMargins,
alignmentHeight);
} else {
left = layoutChildLeft(mCollapseButtonView, left, collapsingMargins,
alignmentHeight);
}
}
if (shouldLayout(mMenuView)) {
if (isRtl) {
left = layoutChildLeft(mMenuView, left, collapsingMargins,
alignmentHeight);
} else {
right = layoutChildRight(mMenuView, right, collapsingMargins,
alignmentHeight);
}
}
collapsingMargins[0] = Math.max(0, getContentInsetLeft() - left);
collapsingMargins[1] = Math.max(0, getContentInsetRight() - (width - paddingRight - right));
left = Math.max(left, getContentInsetLeft());
right = Math.min(right, width - paddingRight - getContentInsetRight());
if (shouldLayout(mExpandedActionView)) {
if (isRtl) {
right = layoutChildRight(mExpandedActionView, right, collapsingMargins,
alignmentHeight);
} else {
left = layoutChildLeft(mExpandedActionView, left, collapsingMargins,
alignmentHeight);
}
}
if (shouldLayout(mLogoView)) {
if (isRtl) {
right = layoutChildRight(mLogoView, right, collapsingMargins,
alignmentHeight);
} else {
left = layoutChildLeft(mLogoView, left, collapsingMargins,
alignmentHeight);
}
}
final boolean layoutTitle = shouldLayout(mTitleTextView);
final boolean layoutSubtitle = shouldLayout(mSubtitleTextView);
int titleHeight = 0;
if (layoutTitle) {
final LayoutParams lp = (LayoutParams) mTitleTextView.getLayoutParams();
titleHeight += lp.topMargin + mTitleTextView.getMeasuredHeight() + lp.bottomMargin;
}
if (layoutSubtitle) {
final LayoutParams lp = (LayoutParams) mSubtitleTextView.getLayoutParams();
titleHeight += lp.topMargin + mSubtitleTextView.getMeasuredHeight() + lp.bottomMargin;
}
if (layoutTitle || layoutSubtitle) {
int titleTop;
final View topChild = layoutTitle ? mTitleTextView : mSubtitleTextView;
final View bottomChild = layoutSubtitle ? mSubtitleTextView : mTitleTextView;
final LayoutParams toplp = (LayoutParams) topChild.getLayoutParams();
final LayoutParams bottomlp = (LayoutParams) bottomChild.getLayoutParams();
final boolean titleHasWidth = layoutTitle && mTitleTextView.getMeasuredWidth() > 0
|| layoutSubtitle && mSubtitleTextView.getMeasuredWidth() > 0;
switch (mGravity & Gravity.VERTICAL_GRAVITY_MASK) {
case Gravity.TOP:
titleTop = getPaddingTop() + toplp.topMargin + mTitleMarginTop;
break;
default:
case Gravity.CENTER_VERTICAL:
final int space = height - paddingTop - paddingBottom;
int spaceAbove = (space - titleHeight) / 2;
if (spaceAbove < toplp.topMargin + mTitleMarginTop) {
spaceAbove = toplp.topMargin + mTitleMarginTop;
} else {
final int spaceBelow = height - paddingBottom - titleHeight -
spaceAbove - paddingTop;
if (spaceBelow < toplp.bottomMargin + mTitleMarginBottom) {
spaceAbove = Math.max(0, spaceAbove -
(bottomlp.bottomMargin + mTitleMarginBottom - spaceBelow));
}
}
titleTop = paddingTop + spaceAbove;
break;
case Gravity.BOTTOM:
titleTop = height - paddingBottom - bottomlp.bottomMargin - mTitleMarginBottom -
titleHeight;
break;
}
if (isRtl) {
final int rd = (titleHasWidth ? mTitleMarginStart : 0) - collapsingMargins[1];
right -= Math.max(0, rd);
collapsingMargins[1] = Math.max(0, -rd);
int titleRight = right;
int subtitleRight = right;
if (layoutTitle) {
final LayoutParams lp = (LayoutParams) mTitleTextView.getLayoutParams();
final int titleLeft = titleRight - mTitleTextView.getMeasuredWidth();
final int titleBottom = titleTop + mTitleTextView.getMeasuredHeight();
mTitleTextView.layout(titleLeft, titleTop, titleRight, titleBottom);
titleRight = titleLeft - mTitleMarginEnd;
titleTop = titleBottom + lp.bottomMargin;
}
if (layoutSubtitle) {
final LayoutParams lp = (LayoutParams) mSubtitleTextView.getLayoutParams();
titleTop += lp.topMargin;
final int subtitleLeft = subtitleRight - mSubtitleTextView.getMeasuredWidth();
final int subtitleBottom = titleTop + mSubtitleTextView.getMeasuredHeight();
mSubtitleTextView.layout(subtitleLeft, titleTop, subtitleRight, subtitleBottom);
subtitleRight = subtitleRight - mTitleMarginEnd;
titleTop = subtitleBottom + lp.bottomMargin;
}
if (titleHasWidth) {
right = Math.min(titleRight, subtitleRight);
}
} else {
final int ld = (titleHasWidth ? mTitleMarginStart : 0) - collapsingMargins[0];
left += Math.max(0, ld);
collapsingMargins[0] = Math.max(0, -ld);
int titleLeft = left;
int subtitleLeft = left;
if (layoutTitle) {
final LayoutParams lp = (LayoutParams) mTitleTextView.getLayoutParams();
final int titleRight = titleLeft + mTitleTextView.getMeasuredWidth();
final int titleBottom = titleTop + mTitleTextView.getMeasuredHeight();
mTitleTextView.layout(titleLeft, titleTop, titleRight, titleBottom);
titleLeft = titleRight + mTitleMarginEnd;
titleTop = titleBottom + lp.bottomMargin;
}
if (layoutSubtitle) {
final LayoutParams lp = (LayoutParams) mSubtitleTextView.getLayoutParams();
titleTop += lp.topMargin;
final int subtitleRight = subtitleLeft + mSubtitleTextView.getMeasuredWidth();
final int subtitleBottom = titleTop + mSubtitleTextView.getMeasuredHeight();
mSubtitleTextView.layout(subtitleLeft, titleTop, subtitleRight, subtitleBottom);
subtitleLeft = subtitleRight + mTitleMarginEnd;
titleTop = subtitleBottom + lp.bottomMargin;
}
if (titleHasWidth) {
left = Math.max(titleLeft, subtitleLeft);
}
}
}
// Get all remaining children sorted for layout. This is all prepared
// such that absolute layout direction can be used below.
addCustomViewsWithGravity(mTempViews, Gravity.LEFT);
final int leftViewsCount = mTempViews.size();
for (int i = 0; i < leftViewsCount; i++) {
left = layoutChildLeft(mTempViews.get(i), left, collapsingMargins,
alignmentHeight);
}
addCustomViewsWithGravity(mTempViews, Gravity.RIGHT);
final int rightViewsCount = mTempViews.size();
for (int i = 0; i < rightViewsCount; i++) {
right = layoutChildRight(mTempViews.get(i), right, collapsingMargins,
alignmentHeight);
}
// Centered views try to center with respect to the whole bar, but views pinned
// to the left or right can push the mass of centered views to one side or the other.
addCustomViewsWithGravity(mTempViews, Gravity.CENTER_HORIZONTAL);
final int centerViewsWidth = getViewListMeasuredWidth(mTempViews, collapsingMargins);
final int parentCenter = paddingLeft + (width - paddingLeft - paddingRight) / 2;
final int halfCenterViewsWidth = centerViewsWidth / 2;
int centerLeft = parentCenter - halfCenterViewsWidth;
final int centerRight = centerLeft + centerViewsWidth;
if (centerLeft < left) {
centerLeft = left;
} else if (centerRight > right) {
centerLeft -= centerRight - right;
}
final int centerViewsCount = mTempViews.size();
for (int i = 0; i < centerViewsCount; i++) {
centerLeft = layoutChildLeft(mTempViews.get(i), centerLeft, collapsingMargins,
alignmentHeight);
}
mTempViews.clear();
}
private int getViewListMeasuredWidth(List views, int[] collapsingMargins) {
int collapseLeft = collapsingMargins[0];
int collapseRight = collapsingMargins[1];
int width = 0;
final int count = views.size();
for (int i = 0; i < count; i++) {
final View v = views.get(i);
final LayoutParams lp = (LayoutParams) v.getLayoutParams();
final int l = lp.leftMargin - collapseLeft;
final int r = lp.rightMargin - collapseRight;
final int leftMargin = Math.max(0, l);
final int rightMargin = Math.max(0, r);
collapseLeft = Math.max(0, -l);
collapseRight = Math.max(0, -r);
width += leftMargin + v.getMeasuredWidth() + rightMargin;
}
return width;
}
private int layoutChildLeft(View child, int left, int[] collapsingMargins,
int alignmentHeight) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
final int l = lp.leftMargin - collapsingMargins[0];
left += Math.max(0, l);
collapsingMargins[0] = Math.max(0, -l);
final int top = getChildTop(child, alignmentHeight);
final int childWidth = child.getMeasuredWidth();
child.layout(left, top, left + childWidth, top + child.getMeasuredHeight());
left += childWidth + lp.rightMargin;
return left;
}
private int layoutChildRight(View child, int right, int[] collapsingMargins,
int alignmentHeight) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
final int r = lp.rightMargin - collapsingMargins[1];
right -= Math.max(0, r);
collapsingMargins[1] = Math.max(0, -r);
final int top = getChildTop(child, alignmentHeight);
final int childWidth = child.getMeasuredWidth();
child.layout(right - childWidth, top, right, top + child.getMeasuredHeight());
right -= childWidth + lp.leftMargin;
return right;
}
private int getChildTop(View child, int alignmentHeight) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
final int childHeight = child.getMeasuredHeight();
final int alignmentOffset = alignmentHeight > 0 ? (childHeight - alignmentHeight) / 2 : 0;
switch (getChildVerticalGravity(lp.gravity)) {
case Gravity.TOP:
return getPaddingTop() - alignmentOffset;
case Gravity.BOTTOM:
return getHeight() - getPaddingBottom() - childHeight
- lp.bottomMargin - alignmentOffset;
default:
case Gravity.CENTER_VERTICAL:
final int paddingTop = getPaddingTop();
final int paddingBottom = getPaddingBottom();
final int height = getHeight();
final int space = height - paddingTop - paddingBottom;
int spaceAbove = (space - childHeight) / 2;
if (spaceAbove < lp.topMargin) {
spaceAbove = lp.topMargin;
} else {
final int spaceBelow = height - paddingBottom - childHeight -
spaceAbove - paddingTop;
if (spaceBelow < lp.bottomMargin) {
spaceAbove = Math.max(0, spaceAbove - (lp.bottomMargin - spaceBelow));
}
}
return paddingTop + spaceAbove;
}
}
private int getChildVerticalGravity(int gravity) {
final int vgrav = gravity & Gravity.VERTICAL_GRAVITY_MASK;
switch (vgrav) {
case Gravity.TOP:
case Gravity.BOTTOM:
case Gravity.CENTER_VERTICAL:
return vgrav;
default:
return mGravity & Gravity.VERTICAL_GRAVITY_MASK;
}
}
/**
* Prepare a list of non-SYSTEM child views. If the layout direction is RTL
* this will be in reverse child order.
*
* @param views List to populate. It will be cleared before use.
* @param gravity Horizontal gravity to match against
*/
private void addCustomViewsWithGravity(List views, int gravity) {
final boolean isRtl = getLayoutDirection() == LAYOUT_DIRECTION_RTL;
final int childCount = getChildCount();
final int absGrav = Gravity.getAbsoluteGravity(gravity, getLayoutDirection());
views.clear();
if (isRtl) {
for (int i = childCount - 1; i >= 0; i--) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (lp.mViewType == LayoutParams.CUSTOM && shouldLayout(child) &&
getChildHorizontalGravity(lp.gravity) == absGrav) {
views.add(child);
}
}
} else {
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (lp.mViewType == LayoutParams.CUSTOM && shouldLayout(child) &&
getChildHorizontalGravity(lp.gravity) == absGrav) {
views.add(child);
}
}
}
}
private int getChildHorizontalGravity(int gravity) {
final int ld = getLayoutDirection();
final int absGrav = Gravity.getAbsoluteGravity(gravity, ld);
final int hGrav = absGrav & Gravity.HORIZONTAL_GRAVITY_MASK;
switch (hGrav) {
case Gravity.LEFT:
case Gravity.RIGHT:
case Gravity.CENTER_HORIZONTAL:
return hGrav;
default:
return ld == LAYOUT_DIRECTION_RTL ? Gravity.RIGHT : Gravity.LEFT;
}
}
private boolean shouldLayout(View view) {
return view != null && view.getParent() == this && view.getVisibility() != GONE;
}
private int getHorizontalMargins(View v) {
final MarginLayoutParams mlp = (MarginLayoutParams) v.getLayoutParams();
return mlp.getMarginStart() + mlp.getMarginEnd();
}
private int getVerticalMargins(View v) {
final MarginLayoutParams mlp = (MarginLayoutParams) v.getLayoutParams();
return mlp.topMargin + mlp.bottomMargin;
}
@Override
public LayoutParams generateLayoutParams(AttributeSet attrs) {
return new LayoutParams(getContext(), attrs);
}
@Override
protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) {
if (p instanceof LayoutParams) {
return new LayoutParams((LayoutParams) p);
} else if (p instanceof ActionBar.LayoutParams) {
return new LayoutParams((ActionBar.LayoutParams) p);
} else if (p instanceof MarginLayoutParams) {
return new LayoutParams((MarginLayoutParams) p);
} else {
return new LayoutParams(p);
}
}
@Override
protected LayoutParams generateDefaultLayoutParams() {
return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
}
@Override
protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
return super.checkLayoutParams(p) && p instanceof LayoutParams;
}
private static boolean isCustomView(View child) {
return ((LayoutParams) child.getLayoutParams()).mViewType == LayoutParams.CUSTOM;
}
/** @hide */
public DecorToolbar getWrapper() {
if (mWrapper == null) {
mWrapper = new ToolbarWidgetWrapper(this, true);
}
return mWrapper;
}
private void setChildVisibilityForExpandedActionView(boolean expand) {
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (lp.mViewType != LayoutParams.EXPANDED && child != mMenuView) {
child.setVisibility(expand ? GONE : VISIBLE);
}
}
}
private void updateChildVisibilityForExpandedActionView(View child) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
if (lp.mViewType != LayoutParams.EXPANDED && child != mMenuView) {
child.setVisibility(mExpandedActionView != null ? GONE : VISIBLE);
}
}
/**
* Force the toolbar to collapse to zero-height during measurement if
* it could be considered "empty" (no visible elements with nonzero measured size)
* @hide
*/
public void setCollapsible(boolean collapsible) {
mCollapsible = collapsible;
requestLayout();
}
/**
* Must be called before the menu is accessed
* @hide
*/
public void setMenuCallbacks(MenuPresenter.Callback pcb, MenuBuilder.Callback mcb) {
mActionMenuPresenterCallback = pcb;
mMenuBuilderCallback = mcb;
}
/**
* Accessor to enable LayoutLib to get ActionMenuPresenter directly.
*/
ActionMenuPresenter getOuterActionMenuPresenter() {
return mOuterActionMenuPresenter;
}
Context getPopupContext() {
return mPopupContext;
}
/**
* Interface responsible for receiving menu item click events if the items themselves
* do not have individual item click listeners.
*/
public interface OnMenuItemClickListener {
/**
* This method will be invoked when a menu item is clicked if the item itself did
* not already handle the event.
*
* @param item {@link MenuItem} that was clicked
* @return true if the event was handled, false otherwise.
*/
public boolean onMenuItemClick(MenuItem item);
}
/**
* Layout information for child views of Toolbars.
*
* Toolbar.LayoutParams extends ActionBar.LayoutParams for compatibility with existing
* ActionBar API. See {@link android.app.Activity#setActionBar(Toolbar) Activity.setActionBar}
* for more info on how to use a Toolbar as your Activity's ActionBar.
*
* @attr ref android.R.styleable#Toolbar_LayoutParams_layout_gravity
*/
public static class LayoutParams extends ActionBar.LayoutParams {
static final int CUSTOM = 0;
static final int SYSTEM = 1;
static final int EXPANDED = 2;
int mViewType = CUSTOM;
public LayoutParams(@NonNull Context c, AttributeSet attrs) {
super(c, attrs);
}
public LayoutParams(int width, int height) {
super(width, height);
this.gravity = Gravity.CENTER_VERTICAL | Gravity.START;
}
public LayoutParams(int width, int height, int gravity) {
super(width, height);
this.gravity = gravity;
}
public LayoutParams(int gravity) {
this(WRAP_CONTENT, MATCH_PARENT, gravity);
}
public LayoutParams(LayoutParams source) {
super(source);
mViewType = source.mViewType;
}
public LayoutParams(ActionBar.LayoutParams source) {
super(source);
}
public LayoutParams(MarginLayoutParams source) {
super(source);
// ActionBar.LayoutParams doesn't have a MarginLayoutParams constructor.
// Fake it here and copy over the relevant data.
copyMarginsFrom(source);
}
public LayoutParams(ViewGroup.LayoutParams source) {
super(source);
}
}
static class SavedState extends BaseSavedState {
public int expandedMenuItemId;
public boolean isOverflowOpen;
public SavedState(Parcel source) {
super(source);
expandedMenuItemId = source.readInt();
isOverflowOpen = source.readInt() != 0;
}
public SavedState(Parcelable superState) {
super(superState);
}
@Override
public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeInt(expandedMenuItemId);
out.writeInt(isOverflowOpen ? 1 : 0);
}
public static final Creator CREATOR = new Creator() {
@Override
public SavedState createFromParcel(Parcel source) {
return new SavedState(source);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
private class ExpandedActionViewMenuPresenter implements MenuPresenter {
MenuBuilder mMenu;
MenuItemImpl mCurrentExpandedItem;
@Override
public void initForMenu(Context context, MenuBuilder menu) {
// Clear the expanded action view when menus change.
if (mMenu != null && mCurrentExpandedItem != null) {
mMenu.collapseItemActionView(mCurrentExpandedItem);
}
mMenu = menu;
}
@Override
public MenuView getMenuView(ViewGroup root) {
return null;
}
@Override
public void updateMenuView(boolean cleared) {
// Make sure the expanded item we have is still there.
if (mCurrentExpandedItem != null) {
boolean found = false;
if (mMenu != null) {
final int count = mMenu.size();
for (int i = 0; i < count; i++) {
final MenuItem item = mMenu.getItem(i);
if (item == mCurrentExpandedItem) {
found = true;
break;
}
}
}
if (!found) {
// The item we had expanded disappeared. Collapse.
collapseItemActionView(mMenu, mCurrentExpandedItem);
}
}
}
@Override
public void setCallback(Callback cb) {
}
@Override
public boolean onSubMenuSelected(SubMenuBuilder subMenu) {
return false;
}
@Override
public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
}
@Override
public boolean flagActionItems() {
return false;
}
@Override
public boolean expandItemActionView(MenuBuilder menu, MenuItemImpl item) {
ensureCollapseButtonView();
if (mCollapseButtonView.getParent() != Toolbar.this) {
addView(mCollapseButtonView);
}
mExpandedActionView = item.getActionView();
mCurrentExpandedItem = item;
if (mExpandedActionView.getParent() != Toolbar.this) {
final LayoutParams lp = generateDefaultLayoutParams();
lp.gravity = Gravity.START | (mButtonGravity & Gravity.VERTICAL_GRAVITY_MASK);
lp.mViewType = LayoutParams.EXPANDED;
mExpandedActionView.setLayoutParams(lp);
addView(mExpandedActionView);
}
setChildVisibilityForExpandedActionView(true);
requestLayout();
item.setActionViewExpanded(true);
if (mExpandedActionView instanceof CollapsibleActionView) {
((CollapsibleActionView) mExpandedActionView).onActionViewExpanded();
}
return true;
}
@Override
public boolean collapseItemActionView(MenuBuilder menu, MenuItemImpl item) {
// Do this before detaching the actionview from the hierarchy, in case
// it needs to dismiss the soft keyboard, etc.
if (mExpandedActionView instanceof CollapsibleActionView) {
((CollapsibleActionView) mExpandedActionView).onActionViewCollapsed();
}
removeView(mExpandedActionView);
removeView(mCollapseButtonView);
mExpandedActionView = null;
setChildVisibilityForExpandedActionView(false);
mCurrentExpandedItem = null;
requestLayout();
item.setActionViewExpanded(false);
return true;
}
@Override
public int getId() {
return 0;
}
@Override
public Parcelable onSaveInstanceState() {
return null;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
}
}
}