Add support for secure system overlays. (DO NOT MERGE)
This change adds a new window type for secure system overlays
created by the system itself from non-secure system overlays that
might be created by applications that have the system alert permission.
Secure views ignore the presence of secure system overlays.
Bug: 3098519
Change-Id: I8f8398f4fdeb0469e5d71124c21bedf121bd8c07
diff --git a/core/java/android/view/WindowManager.java b/core/java/android/view/WindowManager.java
index 9c4aefe..091844e 100644
--- a/core/java/android/view/WindowManager.java
+++ b/core/java/android/view/WindowManager.java
@@ -163,7 +163,8 @@
@ViewDebug.IntToString(from = TYPE_KEYGUARD_DIALOG, to = "TYPE_KEYGUARD_DIALOG"),
@ViewDebug.IntToString(from = TYPE_SYSTEM_ERROR, to = "TYPE_SYSTEM_ERROR"),
@ViewDebug.IntToString(from = TYPE_INPUT_METHOD, to = "TYPE_INPUT_METHOD"),
- @ViewDebug.IntToString(from = TYPE_INPUT_METHOD_DIALOG, to = "TYPE_INPUT_METHOD_DIALOG")
+ @ViewDebug.IntToString(from = TYPE_INPUT_METHOD_DIALOG, to = "TYPE_INPUT_METHOD_DIALOG"),
+ @ViewDebug.IntToString(from = TYPE_SECURE_SYSTEM_OVERLAY, to = "TYPE_SECURE_SYSTEM_OVERLAY")
})
public int type;
@@ -341,7 +342,19 @@
* Window type: panel that slides out from the status bar
*/
public static final int TYPE_STATUS_BAR_PANEL = FIRST_SYSTEM_WINDOW+14;
-
+
+ /**
+ * Window type: secure system overlay windows, which need to be displayed
+ * on top of everything else. These windows must not take input
+ * focus, or they will interfere with the keyguard.
+ *
+ * This is exactly like {@link #TYPE_SYSTEM_OVERLAY} except that only the
+ * system itself is allowed to create these overlays. Applications cannot
+ * obtain permission to create secure system overlays.
+ * @hide
+ */
+ public static final int TYPE_SECURE_SYSTEM_OVERLAY = FIRST_SYSTEM_WINDOW+15;
+
/**
* End of types of system windows.
*/
diff --git a/include/ui/InputDispatcher.h b/include/ui/InputDispatcher.h
index 3599163..4955d47 100644
--- a/include/ui/InputDispatcher.h
+++ b/include/ui/InputDispatcher.h
@@ -183,6 +183,7 @@
TYPE_INPUT_METHOD_DIALOG= FIRST_SYSTEM_WINDOW+12,
TYPE_WALLPAPER = FIRST_SYSTEM_WINDOW+13,
TYPE_STATUS_BAR_PANEL = FIRST_SYSTEM_WINDOW+14,
+ TYPE_SECURE_SYSTEM_OVERLAY = FIRST_SYSTEM_WINDOW+15,
LAST_SYSTEM_WINDOW = 2999,
};
diff --git a/libs/ui/InputDispatcher.cpp b/libs/ui/InputDispatcher.cpp
index 6ba19d7..41123284 100644
--- a/libs/ui/InputDispatcher.cpp
+++ b/libs/ui/InputDispatcher.cpp
@@ -149,7 +149,8 @@
bool InputWindow::isTrustedOverlay() const {
return layoutParamsType == TYPE_INPUT_METHOD
- || layoutParamsType == TYPE_INPUT_METHOD_DIALOG;
+ || layoutParamsType == TYPE_INPUT_METHOD_DIALOG
+ || layoutParamsType == TYPE_SECURE_SYSTEM_OVERLAY;
}
@@ -1350,7 +1351,7 @@
target.flags = 0;
target.xOffset = 0;
target.yOffset = 0;
- target.windowType = InputWindow::TYPE_SYSTEM_OVERLAY;
+ target.windowType = -1;
}
}
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index 3cf4360..43936a4 100755
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -93,6 +93,7 @@
import static android.view.WindowManager.LayoutParams.TYPE_PHONE;
import static android.view.WindowManager.LayoutParams.TYPE_PRIORITY_PHONE;
import static android.view.WindowManager.LayoutParams.TYPE_SEARCH_BAR;
+import static android.view.WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR;
import static android.view.WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL;
import static android.view.WindowManager.LayoutParams.TYPE_SYSTEM_DIALOG;
@@ -153,6 +154,7 @@
static final int KEYGUARD_DIALOG_LAYER = 15;
// things in here CAN NOT take focus, but are shown on top of everything else.
static final int SYSTEM_OVERLAY_LAYER = 16;
+ static final int SECURE_SYSTEM_OVERLAY_LAYER = 17;
static final int APPLICATION_MEDIA_SUBLAYER = -2;
static final int APPLICATION_MEDIA_OVERLAY_SUBLAYER = -1;
@@ -631,7 +633,7 @@
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.MATCH_PARENT);
- lp.type = WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY;
+ lp.type = WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
lp.flags =
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE|
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
@@ -727,6 +729,7 @@
public void adjustWindowParamsLw(WindowManager.LayoutParams attrs) {
switch (attrs.type) {
case TYPE_SYSTEM_OVERLAY:
+ case TYPE_SECURE_SYSTEM_OVERLAY:
case TYPE_TOAST:
// These types of windows can't receive input events.
attrs.flags |= WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
@@ -804,6 +807,8 @@
return INPUT_METHOD_DIALOG_LAYER;
case TYPE_SYSTEM_OVERLAY:
return SYSTEM_OVERLAY_LAYER;
+ case TYPE_SECURE_SYSTEM_OVERLAY:
+ return SECURE_SYSTEM_OVERLAY_LAYER;
case TYPE_PRIORITY_PHONE:
return PRIORITY_PHONE_LAYER;
case TYPE_TOAST:
diff --git a/services/java/com/android/server/LoadAverageService.java b/services/java/com/android/server/LoadAverageService.java
index 0d86429..b6baadb 100644
--- a/services/java/com/android/server/LoadAverageService.java
+++ b/services/java/com/android/server/LoadAverageService.java
@@ -272,7 +272,7 @@
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
- WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY,
+ WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
PixelFormat.TRANSLUCENT);
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index 7eb295b..de228d9 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -5888,7 +5888,7 @@
View v = LayoutInflater.from(mContext).inflate(
com.android.internal.R.layout.safe_mode, null);
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
- lp.type = WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY;
+ lp.type = WindowManager.LayoutParams.TYPE_SECURE_SYSTEM_OVERLAY;
lp.width = WindowManager.LayoutParams.WRAP_CONTENT;
lp.height = WindowManager.LayoutParams.WRAP_CONTENT;
lp.gravity = Gravity.BOTTOM | Gravity.LEFT;