From fbeb74a61034203ac39da9e61a8e5dd08e3bc393 Mon Sep 17 00:00:00 2001
From: Xavier Ducrohet <xav@android.com>
Date: Thu, 23 Jul 2009 16:58:54 -0700
Subject: [PATCH] Add a checkbox to only show packages that are updates or new.

---
 .../src/com/android/sdklib/SdkManager.java    | 44 +-----------
 .../internal/repository/AddonPackage.java     | 32 +++------
 .../internal/repository/DocPackage.java       | 23 +-----
 .../internal/repository/ExtraPackage.java     | 22 +-----
 .../sdklib/internal/repository/Package.java   | 70 ++++++++++++++++---
 .../internal/repository/PlatformPackage.java  | 26 ++-----
 .../internal/repository/ToolPackage.java      | 21 +-----
 .../internal/repository/ISettingsPage.java    |  8 ++-
 .../internal/repository/LocalSdkAdapter.java  | 13 +---
 .../repository/RemotePackagesPage.java        | 29 ++++++++
 .../repository/RepoSourcesAdapter.java        | 49 +++++++++++++
 .../repository/SettingsController.java        | 12 ++++
 .../internal/repository/UpdaterData.java      | 20 +++++-
 13 files changed, 202 insertions(+), 167 deletions(-)

diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/SdkManager.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/SdkManager.java
index f23208ad0..b23d1bd58 100644
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/SdkManager.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/SdkManager.java
@@ -44,7 +44,6 @@ public final class SdkManager {
     public final static String PROP_VERSION_SDK = "ro.build.version.sdk";
     public final static String PROP_VERSION_CODENAME = "ro.build.version.codename";
     public final static String PROP_VERSION_RELEASE = "ro.build.version.release";
-    public final static String PROP_VERSION_REVISION = "ro.build.version.incremental";
 
     private final static String ADDON_NAME = "name";
     private final static String ADDON_VENDOR = "vendor";
@@ -62,9 +61,6 @@ public final class SdkManager {
     private final static Pattern PATTERN_LIB_DATA = Pattern.compile(
             "^([a-zA-Z0-9._-]+\\.jar);(.*)$", Pattern.CASE_INSENSITIVE);
 
-    private final static Pattern PATTERN_LOCAL_BUILD_PATTERN = Pattern.compile(
-            "^\\S+\\.\\S+\\.(\\d+)\\.\\d+$");
-
      // usb ids are 16-bit hexadecimal values.
     private final static Pattern PATTERN_USB_IDS = Pattern.compile(
             "^0x[a-f0-9]{4}$", Pattern.CASE_INSENSITIVE);
@@ -312,45 +308,7 @@ public final class SdkManager {
                 }
 
                 int revision = 1;
-                stringValue = map.get(PROP_VERSION_REVISION);
-                if (stringValue == null) {
-                    if (log != null) {
-                        log.error(null,
-                                "Ignoring platform '%1$s': %2$s is missing from '%3$s'",
-                                platform.getName(), PROP_VERSION_REVISION,
-                                SdkConstants.FN_BUILD_PROP);
-                    }
-                    return null;
-                } else {
-                    try {
-                         revision = Integer.parseInt(stringValue);
-                    } catch (NumberFormatException e) {
-                        // looks like the revision does not parse to a number.
-                        // we look if it's a local build in the format
-                        // <buildtype>.<username>.<date>.<time>
-                        Matcher m = PATTERN_LOCAL_BUILD_PATTERN.matcher(stringValue);
-                        boolean valid = false;
-                        if (m.matches()) {
-                            String date = m.group(1);
-                            try {
-                                revision = Integer.parseInt(date);
-                                valid = true;
-                            } catch (NumberFormatException e2) {
-                                // do nothing, we'll display an error and return below
-                            }
-                        }
-
-                        if (valid == false) {
-                            if (log != null) {
-                                log.error(null,
-                                        "Ignoring platform '%1$s': %2$s is not a valid number in %3$s.",
-                                        platform.getName(), PROP_VERSION_SDK,
-                                        SdkConstants.FN_BUILD_PROP);
-                            }
-                            return null;
-                        }
-                    }
-                }
+                // FIXME: properly parse the platform revision.
 
                 // api number and name look valid, perform a few more checks
                 if (checkPlatformContent(platform, log) == false) {
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/AddonPackage.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/AddonPackage.java
index 79b55e319..4a19206d1 100755
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/AddonPackage.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/AddonPackage.java
@@ -250,31 +250,17 @@ public class AddonPackage extends Package {
         return null;
     }
 
-    /**
-     * Computes whether the given addon package is a suitable update for the current package.
-     * The base method checks the class type.
-     * The addon package also tests that the name+vendor is the same and
-     * the revision number is greater.
-     * <p/>
-     * An update is just that: a new package that supersedes the current one. If the new
-     * package has the same revision as the current one, it's not an update.
-     *
-     * @param replacementPackage The potential replacement package.
-     * @return True if the replacement package is a suitable update for this one.
-     */
     @Override
-    public boolean canBeUpdatedBy(Package replacementPackage) {
-        if (!super.canBeUpdatedBy(replacementPackage)) {
-            return false;
+    public boolean sameItemAs(Package pkg) {
+        if (pkg instanceof AddonPackage) {
+            AddonPackage newPkg = (AddonPackage)pkg;
+
+            // check they are the same add-on.
+            return getName().equals(newPkg.getName()) &&
+                    getVendor().equals(newPkg.getVendor()) &&
+                    getVersion().equals(newPkg.getVersion());
         }
 
-        AddonPackage newPkg = (AddonPackage) replacementPackage;
-
-        String thisId = getName() + "+" + getVendor();                //$NON-NLS-1$
-        String newId  = newPkg.getName() + "+" + newPkg.getVendor();  //$NON-NLS-1$
-
-        return thisId.equalsIgnoreCase(newId) &&
-                mVersion.equals(newPkg.getVersion()) &&
-                newPkg.getRevision() > this.getRevision();
+        return false;
     }
 }
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/DocPackage.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/DocPackage.java
index 3a71b92c3..d14684207 100755
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/DocPackage.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/DocPackage.java
@@ -135,26 +135,9 @@ public class DocPackage extends Package {
         return new File(osSdkRoot, SdkConstants.FD_DOCS);
     }
 
-    /**
-     * Computes whether the given doc package is a suitable update for the current package.
-     * The base method checks the class type.
-     * The doc package also tests the API level and revision number: the revision number must
-     * always be bumped. The API level can be the same or greater.
-     * <p/>
-     * An update is just that: a new package that supersedes the current one. If the new
-     * package has the same revision as the current one, it's not an update.
-     *
-     * @param replacementPackage The potential replacement package.
-     * @return True if the replacement package is a suitable update for this one.
-     */
     @Override
-    public boolean canBeUpdatedBy(Package replacementPackage) {
-        if (!super.canBeUpdatedBy(replacementPackage)) {
-            return false;
-        }
-
-        DocPackage newPkg = (DocPackage) replacementPackage;
-        return newPkg.getRevision() > this.getRevision() &&
-            newPkg.getVersion().equals(this.getVersion());
+    public boolean sameItemAs(Package pkg) {
+        // only one doc package so any doc package is the same item.
+        return pkg instanceof DocPackage;
     }
 }
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ExtraPackage.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ExtraPackage.java
index f9d375277..86d650b02 100755
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ExtraPackage.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ExtraPackage.java
@@ -141,25 +141,9 @@ public class ExtraPackage extends Package {
         return new File(osSdkRoot, getPath());
     }
 
-    /**
-     * Computes whether the given extra package is a suitable update for the current package.
-     * The base method checks the class type.
-     * The tools package also tests that the revision number is greater and the path is the
-     * same.
-     * <p/>
-     * An update is just that: a new package that supersedes the current one. If the new
-     * package has the same revision as the current one, it's not an update.
-     *
-     * @param replacementPackage The potential replacement package.
-     * @return True if the replacement package is a suitable update for this one.
-     */
     @Override
-    public boolean canBeUpdatedBy(Package replacementPackage) {
-        if (!super.canBeUpdatedBy(replacementPackage)) {
-            return false;
-        }
-
-        ExtraPackage newPkg = (ExtraPackage) replacementPackage;
-        return newPkg.getRevision() > this.getRevision() && newPkg.getPath().equals(this.getPath());
+    public boolean sameItemAs(Package pkg) {
+        // Extra packages are similar if they have the same path.
+        return pkg instanceof ExtraPackage && ((ExtraPackage)pkg).mPath.equals(mPath);
     }
 }
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/Package.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/Package.java
index b28043a49..369305a36 100755
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/Package.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/Package.java
@@ -55,6 +55,21 @@ public abstract class Package implements IDescription {
     private final Archive[] mArchives;
     private final RepoSource mSource;
 
+    /**
+     * Enum for the result of {@link Package#canBeUpdatedBy(Package)}. This used so that we can
+     * differentiate between a package that is totally incompatible, and one that is the same item
+     * but just not an update.
+     * @see #canBeUpdatedBy(Package)
+     */
+    public static enum UpdateInfo {
+        /** Means that the 2 packages are not the same thing */
+        INCOMPATIBLE,
+        /** Means that the 2 packages are the same thing but one does not upgrade the other */
+        NOT_UPDATE,
+        /** Means that the 2 packages are the same thing, and one is the upgrade of the other */
+        UPDATE;
+    }
+
     /**
      * Creates a new package from the attributes and elements of the given XML node.
      * <p/>
@@ -245,6 +260,20 @@ public abstract class Package implements IDescription {
         return mArchives;
     }
 
+    /**
+     * Returns whether the {@link Package} has at least one {@link Archive} compatible with
+     * the host platform.
+     */
+    public boolean hasCompatibleArchive() {
+        for (Archive archive : mArchives) {
+            if (archive.isCompatible()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     /**
      * Returns a short description for an {@link IDescription}.
      * Can be empty but not null.
@@ -279,21 +308,44 @@ public abstract class Package implements IDescription {
     public abstract File getInstallFolder(
             String osSdkRoot, String suggestedDir, SdkManager sdkManager);
 
+    /**
+     * Returns whether the give package represents the same item as the current package.
+     * <p/>
+     * Two packages are considered the same if they represent the same thing, except for the
+     * revision number.
+     * @param pkg the package to compare
+     * @return true if the item
+     */
+    public abstract boolean sameItemAs(Package pkg);
+
     /**
      * Computes whether the given package is a suitable update for the current package.
-     * The base class method only checks that the {@link Package} class type is the same.
-     * Derived classes must add more specific checks, including the revision number.
      * <p/>
      * An update is just that: a new package that supersedes the current one. If the new
-     * package has the same revision as the current one, it's not an update.
+     * package does not represent the same item or if it has the same or lower revision as the
+     * current one, it's not an update.
      *
      * @param replacementPackage The potential replacement package.
-     * @return True if the replacement package is a suitable update for this one.
+     * @return
+     *
+     * @see #sameItemAs(Package)
      */
-    public boolean canBeUpdatedBy(Package replacementPackage) {
-        return replacementPackage != null &&
-            replacementPackage.getClass() == this.getClass() &&
-            replacementPackage.getRevision() > this.getRevision();
-    }
+    public final UpdateInfo canBeUpdatedBy(Package replacementPackage) {
+        if (replacementPackage == null) {
+            return UpdateInfo.INCOMPATIBLE;
+        }
 
+        // check they are the same item.
+        if (sameItemAs(replacementPackage) == false) {
+            return UpdateInfo.INCOMPATIBLE;
+        }
+
+        // check revision number
+        if (replacementPackage.getRevision() > this.getRevision()) {
+            return UpdateInfo.UPDATE;
+        }
+
+        // not an upgrade but not incompatible either.
+        return UpdateInfo.NOT_UPDATE;
+    }
 }
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/PlatformPackage.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/PlatformPackage.java
index 26f226f59..324f51d73 100755
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/PlatformPackage.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/PlatformPackage.java
@@ -153,27 +153,15 @@ public class PlatformPackage extends Package {
         return folder;
     }
 
-    /**
-     * Computes whether the given platform package is a suitable update for the current package.
-     * The base method checks the class type.
-     * The platform package also tests that the version and API level are the same and
-     * the revision number is greater
-     * <p/>
-     * An update is just that: a new package that supersedes the current one. If the new
-     * package has the same revision as the current one, it's not an update.
-     *
-     * @param replacementPackage The potential replacement package.
-     * @return True if the replacement package is a suitable update for this one.
-     */
     @Override
-    public boolean canBeUpdatedBy(Package replacementPackage) {
-        if (!super.canBeUpdatedBy(replacementPackage)) {
-            return false;
+    public boolean sameItemAs(Package pkg) {
+        if (pkg instanceof PlatformPackage) {
+            PlatformPackage newPkg = (PlatformPackage)pkg;
+
+            // check they are the same platform.
+            return newPkg.getVersion().equals(this.getVersion());
         }
 
-        PlatformPackage newPkg = (PlatformPackage) replacementPackage;
-        return newPkg.getVersionName().equalsIgnoreCase(this.getVersionName()) &&
-            newPkg.getVersion().equals(this.getVersion()) &&
-            newPkg.getRevision() > this.getRevision();
+        return false;
     }
 }
diff --git a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ToolPackage.java b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ToolPackage.java
index b81d044ca..bb178747f 100755
--- a/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ToolPackage.java
+++ b/tools/sdkmanager/libs/sdklib/src/com/android/sdklib/internal/repository/ToolPackage.java
@@ -98,24 +98,9 @@ public class ToolPackage extends Package {
         return new File(osSdkRoot, SdkConstants.FD_TOOLS);
     }
 
-    /**
-     * Computes whether the given tools package is a suitable update for the current package.
-     * The base method checks the class type.
-     * The tools package also tests that the revision number is greater.
-     * <p/>
-     * An update is just that: a new package that supersedes the current one. If the new
-     * package has the same revision as the current one, it's not an update.
-     *
-     * @param replacementPackage The potential replacement package.
-     * @return True if the replacement package is a suitable update for this one.
-     */
     @Override
-    public boolean canBeUpdatedBy(Package replacementPackage) {
-        if (!super.canBeUpdatedBy(replacementPackage)) {
-            return false;
-        }
-
-        ToolPackage newPkg = (ToolPackage) replacementPackage;
-        return newPkg.getRevision() > this.getRevision();
+    public boolean sameItemAs(Package pkg) {
+        // only one tool package so any tool package is the same item.
+        return pkg instanceof ToolPackage;
     }
 }
diff --git a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/ISettingsPage.java b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/ISettingsPage.java
index 3930bf1aa..78b04f333 100755
--- a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/ISettingsPage.java
+++ b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/ISettingsPage.java
@@ -25,11 +25,13 @@ import java.util.Properties;
 public interface ISettingsPage {
 
     /** Java system setting picked up by {@link URL} for http proxy port. Type: String. */
-    public static final String KEY_HTTP_PROXY_PORT = "http.proxyPort";        //$NON-NLS-1$
+    public static final String KEY_HTTP_PROXY_PORT = "http.proxyPort";           //$NON-NLS-1$
     /** Java system setting picked up by {@link URL} for http proxy host. Type: String. */
-    public static final String KEY_HTTP_PROXY_HOST = "http.proxyHost";        //$NON-NLS-1$
+    public static final String KEY_HTTP_PROXY_HOST = "http.proxyHost";           //$NON-NLS-1$
     /** Setting to force using http:// instead of https:// connections. Type: Boolean. */
-    public static final String KEY_FORCE_HTTP = "sdkman.force.http";          //$NON-NLS-1$
+    public static final String KEY_FORCE_HTTP = "sdkman.force.http";             //$NON-NLS-1$
+    /** Setting to display only packages that are new or updates. Type: Boolean. */
+    public static final String KEY_SHOW_UPDATE_ONLY = "sdkman.show.update.only"; //$NON-NLS-1$
 
     /** Loads settings from the given {@link Properties} container and update the page UI. */
     public abstract void loadSettings(Properties in_settings);
diff --git a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/LocalSdkAdapter.java b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/LocalSdkAdapter.java
index ab384b8e7..c124b4784 100755
--- a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/LocalSdkAdapter.java
+++ b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/LocalSdkAdapter.java
@@ -17,7 +17,6 @@
 package com.android.sdkuilib.internal.repository;
 
 import com.android.sdklib.internal.repository.IDescription;
-import com.android.sdklib.internal.repository.LocalSdkParser;
 import com.android.sdklib.internal.repository.Package;
 import com.android.sdklib.internal.repository.RepoSource;
 import com.android.sdkuilib.internal.repository.icons.ImageFactory;
@@ -95,17 +94,7 @@ class LocalSdkAdapter  {
          */
         public Object[] getElements(Object inputElement) {
             if (inputElement == LocalSdkAdapter.this) {
-                LocalSdkParser parser = mUpdaterData.getLocalSdkParser();
-
-                Package[] packages = parser.getPackages();
-
-                if (packages == null) {
-                    // load on demand the first time
-                    packages = parser.parseSdk(
-                            mUpdaterData.getOsSdkRoot(),
-                            mUpdaterData.getSdkManager(),
-                            mUpdaterData.getSdkLog());
-                }
+                Package[] packages = mUpdaterData.getInstalledPackage();
 
                 if (packages != null) {
                     return packages;
diff --git a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RemotePackagesPage.java b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RemotePackagesPage.java
index 232da444c..7d991c50f 100755
--- a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RemotePackagesPage.java
+++ b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RemotePackagesPage.java
@@ -58,6 +58,7 @@ public class RemotePackagesPage extends Composite implements ISdkListener {
     private CheckboxTreeViewer mTreeViewerSources;
     private Tree mTreeSources;
     private TreeColumn mColumnSource;
+    private Button mUpdateOnlyCheckBox;
     private Group mDescriptionContainer;
     private Button mAddSiteButton;
     private Button mDeleteSiteButton;
@@ -67,6 +68,7 @@ public class RemotePackagesPage extends Composite implements ISdkListener {
     private Label mDescriptionLabel;
 
 
+
     /**
      * Create the composite.
      * @param parent The parent of the composite.
@@ -104,6 +106,28 @@ public class RemotePackagesPage extends Composite implements ISdkListener {
         mColumnSource.setWidth(289);
         mColumnSource.setText("Sources, Packages and Archives");
 
+        Composite composite = new Composite(parent, SWT.NONE);
+        composite.setLayoutData(
+                new GridData(SWT.FILL, SWT.BEGINNING, false, false, 5, 1));
+        GridLayout gl;
+        composite.setLayout(gl = new GridLayout(2, false));
+        gl.marginHeight = gl.marginWidth = 0;
+        // add an empty composite
+        Composite spacer = new Composite(composite, SWT.NONE);
+        GridData gd;
+        spacer.setLayoutData(gd = new GridData(GridData.FILL_HORIZONTAL));
+        gd.heightHint = 0;
+
+        mUpdateOnlyCheckBox = new Button(composite, SWT.CHECK);
+        mUpdateOnlyCheckBox.setText("Display updates only");
+        mUpdateOnlyCheckBox.setSelection(mUpdaterData.getSettingsController().getShowUpdateOnly());
+        mUpdateOnlyCheckBox.addSelectionListener(new SelectionAdapter() {
+            @Override
+            public void widgetSelected(SelectionEvent arg0) {
+                onShowUpdateOnly(); //$hide$
+            }
+        });
+
         mDescriptionContainer = new Group(parent, SWT.NONE);
         mDescriptionContainer.setLayout(new GridLayout(1, false));
         mDescriptionContainer.setText("Description");
@@ -263,6 +287,11 @@ public class RemotePackagesPage extends Composite implements ISdkListener {
         }
     }
 
+    private void onShowUpdateOnly() {
+        mUpdaterData.getSettingsController().setShowUpdateOnly(mUpdateOnlyCheckBox.getSelection());
+        mTreeViewerSources.refresh();
+    }
+
     private void onInstallSelectedArchives() {
         ArrayList<Archive> archives = new ArrayList<Archive>();
         for (Object element : mTreeViewerSources.getCheckedElements()) {
diff --git a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RepoSourcesAdapter.java b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RepoSourcesAdapter.java
index 18afd4211..3ac99c6e5 100755
--- a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RepoSourcesAdapter.java
+++ b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/RepoSourcesAdapter.java
@@ -22,6 +22,7 @@ import com.android.sdklib.internal.repository.ITask;
 import com.android.sdklib.internal.repository.ITaskMonitor;
 import com.android.sdklib.internal.repository.Package;
 import com.android.sdklib.internal.repository.RepoSource;
+import com.android.sdklib.internal.repository.Package.UpdateInfo;
 import com.android.sdkuilib.internal.repository.icons.ImageFactory;
 
 import org.eclipse.jface.viewers.IContentProvider;
@@ -31,6 +32,8 @@ import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.swt.graphics.Image;
 
+import java.util.ArrayList;
+
 /**
  * A list of sdk-repository sources.
  *
@@ -149,6 +152,10 @@ public class RepoSourcesAdapter {
                     packages = source.getPackages();
                 }
                 if (packages != null) {
+                    // filter out only the packages that are new/upgrade.
+                    if (mUpdaterData.getSettingsController().getShowUpdateOnly()) {
+                        return filteredPackages(packages);
+                    }
                     return packages;
                 } else if (source.getFetchError() != null) {
                     // Return a dummy entry to display the fetch error
@@ -188,4 +195,46 @@ public class RepoSourcesAdapter {
         }
     }
 
+    /**
+     * Filters out a list of remote packages to only keep the ones that are either new or
+     * updates of existing package.
+     * @param remotePackages the list of packages to filter.
+     * @return a non null (but maybe empty) list of new or update packages.
+     */
+    private Object[] filteredPackages(Package[] remotePackages) {
+        // get the installed packages
+        Package[] installedPackages = mUpdaterData.getInstalledPackage();
+
+        ArrayList<Package> filteredList = new ArrayList<Package>();
+
+        // for each remote packages, we look for an existing version.
+        // If no existing version -> add to the list
+        // if existing version but with older revision -> add it to the list
+        for (Package remotePkg : remotePackages) {
+            boolean newPkg = true;
+
+            // For all potential packages, we also make sure that there's an archive for the current
+            // platform, or we simply skip them.
+            if (remotePkg.hasCompatibleArchive()) {
+                for (Package installedPkg : installedPackages) {
+                    UpdateInfo info = installedPkg.canBeUpdatedBy(remotePkg);
+                    if (info == UpdateInfo.UPDATE) {
+                        filteredList.add(remotePkg);
+                        newPkg = false;
+                        break; // there shouldn't be 2 revision of the same package
+                    } else if (info != UpdateInfo.INCOMPATIBLE) {
+                        newPkg = false;
+                        break; // there shouldn't be 2 revision of the same package
+                    }
+                }
+
+                // if we have not found the same package, then we add it (it's a new package)
+                if (newPkg) {
+                    filteredList.add(remotePkg);
+                }
+            }
+        }
+
+        return filteredList.toArray();
+    }
 }
diff --git a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/SettingsController.java b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/SettingsController.java
index 086e547b7..b6363d304 100755
--- a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/SettingsController.java
+++ b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/SettingsController.java
@@ -45,6 +45,18 @@ public class SettingsController {
         return Boolean.parseBoolean(mProperties.getProperty(ISettingsPage.KEY_FORCE_HTTP));
     }
 
+    public boolean getShowUpdateOnly() {
+        String value = mProperties.getProperty(ISettingsPage.KEY_SHOW_UPDATE_ONLY);
+        if (value == null) {
+            return true;
+        }
+        return Boolean.parseBoolean(value);
+    }
+
+    public void setShowUpdateOnly(boolean enabled) {
+        mProperties.setProperty(ISettingsPage.KEY_SHOW_UPDATE_ONLY, Boolean.toString(enabled));
+    }
+
     //--- Controller methods -------------
 
     /**
diff --git a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/UpdaterData.java b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/UpdaterData.java
index 09f963219..ebe36797f 100755
--- a/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/UpdaterData.java
+++ b/tools/sdkmanager/libs/sdkuilib/src/com/android/sdkuilib/internal/repository/UpdaterData.java
@@ -30,6 +30,7 @@ import com.android.sdklib.internal.repository.Package;
 import com.android.sdklib.internal.repository.RepoSource;
 import com.android.sdklib.internal.repository.RepoSources;
 import com.android.sdklib.internal.repository.ToolPackage;
+import com.android.sdklib.internal.repository.Package.UpdateInfo;
 import com.android.sdkuilib.internal.repository.icons.ImageFactory;
 
 import org.eclipse.swt.widgets.Shell;
@@ -226,6 +227,22 @@ class UpdaterData {
         }
     }
 
+    /**
+     * Returns the list of installed packages, parsing them if this has not yet been done.
+     */
+    public Package[] getInstalledPackage() {
+        LocalSdkParser parser = getLocalSdkParser();
+
+        Package[] packages = parser.getPackages();
+
+        if (packages == null) {
+            // load on demand the first time
+            packages = parser.parseSdk(getOsSdkRoot(), getSdkManager(), getSdkLog());
+        }
+
+        return packages;
+    }
+
     /**
      * Notify the listeners ({@link ISdkListener}) that the SDK was reloaded.
      * <p/>This can be called from any thread.
@@ -491,7 +508,8 @@ class UpdaterData {
                     // local package?
 
                     for (Archive availArchive : list) {
-                        if (localPkg.canBeUpdatedBy(availArchive.getParentPackage())) {
+                        UpdateInfo info = localPkg.canBeUpdatedBy(availArchive.getParentPackage());
+                        if (info == UpdateInfo.UPDATE) {
                             // Found one!
                             result.put(availArchive, localArchive);
                             break;