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Implementing support for item diffing instead of creating out the

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complete UI on every update

Bug: 229860311
Test: Verified locally
Change-Id: I5712b5d76878a0ed72cc1392ede59b3778b7a1dc
This commit is contained in:
Sunny Goyal
2022-05-01 12:18:14 -07:00
parent e73c3075c1
commit 3c5a08ada1
11 changed files with 149 additions and 170 deletions
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59
src/com/android/launcher3/allapps/BaseAllAppsAdapter.java
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@@ -88,10 +88,8 @@ public abstract class BaseAllAppsAdapter<T extends Context & ActivityContext> ex
*/
public static class AdapterItem {
/** Common properties */
// The index of this adapter item in the list
public int position;
// The type of this item
public int viewType;
public final int viewType;
// The row that this item shows up on
public int rowIndex;
@@ -100,50 +98,37 @@ public abstract class BaseAllAppsAdapter<T extends Context & ActivityContext> ex
// The associated ItemInfoWithIcon for the item
public AppInfo itemInfo = null;
public AdapterItem(int viewType) {
this.viewType = viewType;
}
/**
* Factory method for AppIcon AdapterItem
*/
public static AdapterItem asApp(int pos, AppInfo appInfo) {
AdapterItem item = new AdapterItem();
item.viewType = VIEW_TYPE_ICON;
item.position = pos;
public static AdapterItem asApp(AppInfo appInfo) {
AdapterItem item = new AdapterItem(VIEW_TYPE_ICON);
item.itemInfo = appInfo;
return item;
}
/**
* Factory method for empty search results view
*/
public static AdapterItem asEmptySearch(int pos) {
AdapterItem item = new AdapterItem();
item.viewType = VIEW_TYPE_EMPTY_SEARCH;
item.position = pos;
return item;
}
/**
* Factory method for a dividerView in AllAppsSearch
*/
public static AdapterItem asAllAppsDivider(int pos) {
AdapterItem item = new AdapterItem();
item.viewType = VIEW_TYPE_ALL_APPS_DIVIDER;
item.position = pos;
return item;
}
/**
* Factory method for a market search button
*/
public static AdapterItem asMarketSearch(int pos) {
AdapterItem item = new AdapterItem();
item.viewType = VIEW_TYPE_SEARCH_MARKET;
item.position = pos;
return item;
}
protected boolean isCountedForAccessibility() {
return viewType == VIEW_TYPE_ICON || viewType == VIEW_TYPE_SEARCH_MARKET;
}
/**
* Returns true if the items represent the same object
*/
public boolean isSameAs(AdapterItem other) {
return (other.viewType != viewType) && (other.getClass() == getClass());
}
/**
* This is called only if {@link #isSameAs} returns true to check if the contents are same
* as well. Returning true will prevent redrawing of thee item.
*/
public boolean isContentSame(AdapterItem other) {
return itemInfo == null && other.itemInfo == null;
}
}
protected final T mActivityContext;