internal virtual int measureContentWidth(android.widget.SpinnerAdapter adapter, android.graphics.drawable.Drawable
background)
{
if (adapter == null)
{
return(0);
}
int width = 0;
android.view.View itemView = null;
int itemType = 0;
int widthMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View
.MeasureSpec.UNSPECIFIED);
int heightMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View
.MeasureSpec.UNSPECIFIED);
// Make sure the number of items we'll measure is capped. If it's a huge data set
// with wildly varying sizes, oh well.
int start = System.Math.Max(0, getSelectedItemPosition());
int end = System.Math.Min(adapter.getCount(), start + MAX_ITEMS_MEASURED);
int count = end - start;
start = System.Math.Max(0, start - (MAX_ITEMS_MEASURED - count));
{
for (int i = start; i < end; i++)
{
int positionType = adapter.getItemViewType(i);
if (positionType != itemType)
{
itemType = positionType;
itemView = null;
}
itemView = adapter.getView(i, itemView, this);
if (itemView.getLayoutParams() == null)
{
itemView.setLayoutParams(new android.view.ViewGroup.LayoutParams(android.view.ViewGroup
.LayoutParams.WRAP_CONTENT, android.view.ViewGroup.LayoutParams.WRAP_CONTENT));
}
itemView.measure(widthMeasureSpec, heightMeasureSpec);
width = System.Math.Max(width, itemView.getMeasuredWidth());
}
}
// Add background padding to measured width
if (background != null)
{
background.getPadding(mTempRect);
width += mTempRect.left + mTempRect.right;
}
return(width);
}
public virtual void updateViewLayout(android.view.View view, android.view.ViewGroup
.LayoutParams @params)
{
if (!(@params is android.view.WindowManagerClass.LayoutParams))
{
throw new System.ArgumentException("Params must be WindowManager.LayoutParams");
}
android.view.WindowManagerClass.LayoutParams wparams = (android.view.WindowManagerClass
.LayoutParams)@params;
view.setLayoutParams(wparams);
lock (this)
{
int index = findViewLocked(view, true);
android.view.ViewRootImpl root = mRoots[index];
mParams[index] = wparams;
root.setLayoutParams(wparams, false);
}
}
public override void addView(android.view.View child)
{
if (child.getLayoutParams() == null)
{
android.widget.LinearLayout.LayoutParams lp = new android.widget.LinearLayout.LayoutParams
(0, android.view.ViewGroup.LayoutParams.MATCH_PARENT, 1.0f);
lp.setMargins(0, 0, 0, 0);
child.setLayoutParams(lp);
}
// Ensure you can navigate to the tab with the keyboard, and you can touch it
child.setFocusable(true);
child.setClickable(true);
base.addView(child);
// TODO: detect this via geometry with a tabwidget listener rather
// than potentially interfere with the view's listener
child.setOnClickListener(new android.widget.TabWidget.TabClickListener(this, getTabCount
() - 1));
child.setOnFocusChangeListener(this);
}
public override android.view.View getItemView([email protected] item, android.view.View convertView, android.view.ViewGroup parent) { android.view.View actionView = item.getActionView(); if (actionView == null || item.hasCollapsibleActionView()) { if (!(convertView is [email protected])) { convertView = null; } actionView = base.getItemView(item, convertView, parent); } actionView.setVisibility(item.isActionViewExpanded() ? android.view.View.GONE : android.view.View .VISIBLE); [email protected] menuParent = ([email protected] )parent; android.view.ViewGroup.LayoutParams lp = actionView.getLayoutParams(); if (!menuParent.checkLayoutParams(lp)) { actionView.setLayoutParams((([email protected] )menuParent.generateLayoutParams(lp))); } return(actionView); }
protected internal override void onMeasure(int widthMeasureSpec, int heightMeasureSpec
)
{
int widthMode = android.view.View.MeasureSpec.getMode(widthMeasureSpec);
int widthSize;
int heightSize;
mSpinnerPadding.left = mPaddingLeft > mSelectionLeftPadding ? mPaddingLeft : mSelectionLeftPadding;
mSpinnerPadding.top = mPaddingTop > mSelectionTopPadding ? mPaddingTop : mSelectionTopPadding;
mSpinnerPadding.right = mPaddingRight > mSelectionRightPadding ? mPaddingRight :
mSelectionRightPadding;
mSpinnerPadding.bottom = mPaddingBottom > mSelectionBottomPadding ? mPaddingBottom
: mSelectionBottomPadding;
if (mDataChanged)
{
handleDataChanged();
}
int preferredHeight = 0;
int preferredWidth = 0;
bool needsMeasuring = true;
int selectedPosition = getSelectedItemPosition();
if (selectedPosition >= 0 && mAdapter != null && selectedPosition < mAdapter.getCount
())
{
// Try looking in the recycler. (Maybe we were measured once already)
android.view.View view = mRecycler.get(selectedPosition);
if (view == null)
{
// Make a new one
view = mAdapter.getView(selectedPosition, null, this);
}
if (view != null)
{
// Put in recycler for re-measuring and/or layout
mRecycler.put(selectedPosition, view);
}
if (view != null)
{
if (view.getLayoutParams() == null)
{
mBlockLayoutRequests = true;
view.setLayoutParams(generateDefaultLayoutParams());
mBlockLayoutRequests = false;
}
measureChild(view, widthMeasureSpec, heightMeasureSpec);
preferredHeight = getChildHeight(view) + mSpinnerPadding.top + mSpinnerPadding.bottom;
preferredWidth = getChildWidth(view) + mSpinnerPadding.left + mSpinnerPadding.right;
needsMeasuring = false;
}
}
if (needsMeasuring)
{
// No views -- just use padding
preferredHeight = mSpinnerPadding.top + mSpinnerPadding.bottom;
if (widthMode == android.view.View.MeasureSpec.UNSPECIFIED)
{
preferredWidth = mSpinnerPadding.left + mSpinnerPadding.right;
}
}
preferredHeight = System.Math.Max(preferredHeight, getSuggestedMinimumHeight());
preferredWidth = System.Math.Max(preferredWidth, getSuggestedMinimumWidth());
heightSize = resolveSizeAndState(preferredHeight, heightMeasureSpec, 0);
widthSize = resolveSizeAndState(preferredWidth, widthMeasureSpec, 0);
setMeasuredDimension(widthSize, heightSize);
mHeightMeasureSpec = heightMeasureSpec;
mWidthMeasureSpec = widthMeasureSpec;
}
private void addView(android.view.View view, android.view.ViewGroup.LayoutParams
@params, android.view.CompatibilityInfoHolder cih, bool nest)
{
if (false)
{
android.util.Log.v("WindowManager", "addView view=" + view);
}
if (!(@params is android.view.WindowManagerClass.LayoutParams))
{
throw new System.ArgumentException("Params must be WindowManager.LayoutParams");
}
android.view.WindowManagerClass.LayoutParams wparams = (android.view.WindowManagerClass
.LayoutParams)@params;
android.view.ViewRootImpl root;
android.view.View panelParentView = null;
lock (this)
{
// Here's an odd/questionable case: if someone tries to add a
// view multiple times, then we simply bump up a nesting count
// and they need to remove the view the corresponding number of
// times to have it actually removed from the window manager.
// This is useful specifically for the notification manager,
// which can continually add/remove the same view as a
// notification gets updated.
int index = findViewLocked(view, false);
if (index >= 0)
{
if (!nest)
{
throw new System.InvalidOperationException("View " + view + " has already been added to the window manager."
);
}
root = mRoots[index];
root.mAddNesting++;
// Update layout parameters.
view.setLayoutParams(wparams);
root.setLayoutParams(wparams, true);
return;
}
// If this is a panel window, then find the window it is being
// attached to for future reference.
if (wparams.type >= android.view.WindowManagerClass.LayoutParams.FIRST_SUB_WINDOW &&
wparams.type <= android.view.WindowManagerClass.LayoutParams.LAST_SUB_WINDOW)
{
int count = mViews != null ? mViews.Length : 0;
{
for (int i = 0; i < count; i++)
{
if (mRoots[i].mWindow.asBinder() == wparams.token)
{
panelParentView = mViews[i];
}
}
}
}
root = new android.view.ViewRootImpl(view.getContext());
root.mAddNesting = 1;
if (cih == null)
{
root.mCompatibilityInfo = new android.view.CompatibilityInfoHolder();
}
else
{
root.mCompatibilityInfo = cih;
}
view.setLayoutParams(wparams);
if (mViews == null)
{
index = 1;
mViews = new android.view.View[1];
mRoots = new android.view.ViewRootImpl[1];
mParams = new android.view.WindowManagerClass.LayoutParams[1];
}
else
{
index = mViews.Length + 1;
object[] old = mViews;
mViews = new android.view.View[index];
System.Array.Copy(old, 0, mViews, 0, index - 1);
old = mRoots;
mRoots = new android.view.ViewRootImpl[index];
System.Array.Copy(old, 0, mRoots, 0, index - 1);
old = mParams;
mParams = new android.view.WindowManagerClass.LayoutParams[index];
System.Array.Copy(old, 0, mParams, 0, index - 1);
}
index--;
mViews[index] = view;
mRoots[index] = root;
mParams[index] = wparams;
}
// do this last because it fires off messages to start doing things
root.setView(view, wparams, panelParentView);
}
public override void setCustomView(android.view.View view, android.app.ActionBar.
LayoutParams layoutParams)
{
view.setLayoutParams(layoutParams);
mActionView.setCustomNavigationView(view);
}
