1 files changed, 245 insertions, 0 deletions
diff --git a/actionbarsherlock/src/com/actionbarsherlock/internal/widget/ActionBarContainer.java b/actionbarsherlock/src/com/actionbarsherlock/internal/widget/ActionBarContainer.java
new file mode 100644
index 000000000..5e5aa2867
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+++ b/actionbarsherlock/src/com/actionbarsherlock/internal/widget/ActionBarContainer.java
@@ -0,0 +1,245 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.actionbarsherlock.internal.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.actionbarsherlock.R;
+import com.actionbarsherlock.app.ActionBar;
+import com.actionbarsherlock.internal.nineoldandroids.widget.NineFrameLayout;
+
+/**
+ * This class acts as a container for the action bar view and action mode context views.
+ * It applies special styles as needed to help handle animated transitions between them.
+ * @hide
+ */
+public class ActionBarContainer extends NineFrameLayout {
+    private boolean mIsTransitioning;
+    private View mTabContainer;
+    private ActionBarView mActionBarView;
+
+    private Drawable mBackground;
+    private Drawable mStackedBackground;
+    private Drawable mSplitBackground;
+    private boolean mIsSplit;
+    private boolean mIsStacked;
+
+    public ActionBarContainer(Context context) {
+        this(context, null);
+    }
+
+    public ActionBarContainer(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        setBackgroundDrawable(null);
+
+        TypedArray a = context.obtainStyledAttributes(attrs,
+                R.styleable.SherlockActionBar);
+        mBackground = a.getDrawable(R.styleable.SherlockActionBar_background);
+        mStackedBackground = a.getDrawable(
+                R.styleable.SherlockActionBar_backgroundStacked);
+
+        if (getId() == R.id.abs__split_action_bar) {
+            mIsSplit = true;
+            mSplitBackground = a.getDrawable(
+                    R.styleable.SherlockActionBar_backgroundSplit);
+        }
+        a.recycle();
+
+        setWillNotDraw(mIsSplit ? mSplitBackground == null :
+                mBackground == null && mStackedBackground == null);
+    }
+
+    @Override
+    public void onFinishInflate() {
+        super.onFinishInflate();
+        mActionBarView = (ActionBarView) findViewById(R.id.abs__action_bar);
+    }
+
+    public void setPrimaryBackground(Drawable bg) {
+        mBackground = bg;
+        invalidate();
+    }
+
+    public void setStackedBackground(Drawable bg) {
+        mStackedBackground = bg;
+        invalidate();
+    }
+
+    public void setSplitBackground(Drawable bg) {
+        mSplitBackground = bg;
+        invalidate();
+    }
+
+    /**
+     * Set the action bar into a "transitioning" state. While transitioning
+     * the bar will block focus and touch from all of its descendants. This
+     * prevents the user from interacting with the bar while it is animating
+     * in or out.
+     *
+     * @param isTransitioning true if the bar is currently transitioning, false otherwise.
+     */
+    public void setTransitioning(boolean isTransitioning) {
+        mIsTransitioning = isTransitioning;
+        setDescendantFocusability(isTransitioning ? FOCUS_BLOCK_DESCENDANTS
+                : FOCUS_AFTER_DESCENDANTS);
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        return mIsTransitioning || super.onInterceptTouchEvent(ev);
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent ev) {
+        super.onTouchEvent(ev);
+
+        // An action bar always eats touch events.
+        return true;
+    }
+
+    @Override
+    public boolean onHoverEvent(MotionEvent ev) {
+        super.onHoverEvent(ev);
+
+        // An action bar always eats hover events.
+        return true;
+    }
+
+    public void setTabContainer(ScrollingTabContainerView tabView) {
+        if (mTabContainer != null) {
+            removeView(mTabContainer);
+        }
+        mTabContainer = tabView;
+        if (tabView != null) {
+            addView(tabView);
+            final ViewGroup.LayoutParams lp = tabView.getLayoutParams();
+            lp.width = LayoutParams.MATCH_PARENT;
+            lp.height = LayoutParams.WRAP_CONTENT;
+            tabView.setAllowCollapse(false);
+        }
+    }
+
+    public View getTabContainer() {
+        return mTabContainer;
+    }
+
+    @Override
+    public void onDraw(Canvas canvas) {
+        if (getWidth() == 0 || getHeight() == 0) {
+            return;
+        }
+
+        if (mIsSplit) {
+            if (mSplitBackground != null) mSplitBackground.draw(canvas);
+        } else {
+            if (mBackground != null) {
+                mBackground.draw(canvas);
+            }
+            if (mStackedBackground != null && mIsStacked) {
+                mStackedBackground.draw(canvas);
+            }
+        }
+    }
+
+    //This causes the animation reflection to fail on pre-HC platforms
+    //@Override
+    //public android.view.ActionMode startActionModeForChild(View child, android.view.ActionMode.Callback callback) {
+    //    // No starting an action mode for an action bar child! (Where would it go?)
+    //    return null;
+    //}
+
+    @Override
+    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+
+        if (mActionBarView == null) return;
+
+        final LayoutParams lp = (LayoutParams) mActionBarView.getLayoutParams();
+        final int actionBarViewHeight = mActionBarView.isCollapsed() ? 0 :
+                mActionBarView.getMeasuredHeight() + lp.topMargin + lp.bottomMargin;
+
+        if (mTabContainer != null && mTabContainer.getVisibility() != GONE) {
+            final int mode = MeasureSpec.getMode(heightMeasureSpec);
+            if (mode == MeasureSpec.AT_MOST) {
+                final int maxHeight = MeasureSpec.getSize(heightMeasureSpec);
+                setMeasuredDimension(getMeasuredWidth(),
+                        Math.min(actionBarViewHeight + mTabContainer.getMeasuredHeight(),
+                                maxHeight));
+            }
+        }
+    }
+
+    @Override
+    public void onLayout(boolean changed, int l, int t, int r, int b) {
+        super.onLayout(changed, l, t, r, b);
+
+        final boolean hasTabs = mTabContainer != null && mTabContainer.getVisibility() != GONE;
+
+        if (mTabContainer != null && mTabContainer.getVisibility() != GONE) {
+            final int containerHeight = getMeasuredHeight();
+            final int tabHeight = mTabContainer.getMeasuredHeight();
+
+            if ((mActionBarView.getDisplayOptions() & ActionBar.DISPLAY_SHOW_HOME) == 0) {
+                // Not showing home, put tabs on top.
+                final int count = getChildCount();
+                for (int i = 0; i < count; i++) {
+                    final View child = getChildAt(i);
+
+                    if (child == mTabContainer) continue;
+
+                    if (!mActionBarView.isCollapsed()) {
+                        child.offsetTopAndBottom(tabHeight);
+                    }
+                }
+                mTabContainer.layout(l, 0, r, tabHeight);
+            } else {
+                mTabContainer.layout(l, containerHeight - tabHeight, r, containerHeight);
+            }
+        }
+
+        boolean needsInvalidate = false;
+        if (mIsSplit) {
+            if (mSplitBackground != null) {
+                mSplitBackground.setBounds(0, 0, getMeasuredWidth(), getMeasuredHeight());
+                needsInvalidate = true;
+            }
+        } else {
+            if (mBackground != null) {
+                mBackground.setBounds(mActionBarView.getLeft(), mActionBarView.getTop(),
+                        mActionBarView.getRight(), mActionBarView.getBottom());
+                needsInvalidate = true;
+            }
+            if ((mIsStacked = hasTabs && mStackedBackground != null)) {
+                mStackedBackground.setBounds(mTabContainer.getLeft(), mTabContainer.getTop(),
+                        mTabContainer.getRight(), mTabContainer.getBottom());
+                needsInvalidate = true;
+            }
+        }
+
+        if (needsInvalidate) {
+            invalidate();
+        }
+    }
+}