diff options
Diffstat (limited to 'src/org/openintents/openpgp/util/OpenPgpListPreference.java')
-rw-r--r-- | src/org/openintents/openpgp/util/OpenPgpListPreference.java | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/src/org/openintents/openpgp/util/OpenPgpListPreference.java b/src/org/openintents/openpgp/util/OpenPgpListPreference.java new file mode 100644 index 00000000..cf586462 --- /dev/null +++ b/src/org/openintents/openpgp/util/OpenPgpListPreference.java @@ -0,0 +1,257 @@ +/* + * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de> + * + * 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 org.openintents.openpgp.util; + +import android.app.AlertDialog.Builder; +import android.content.Context; +import android.content.DialogInterface; +import android.content.Intent; +import android.content.pm.ResolveInfo; +import android.content.res.TypedArray; +import android.graphics.drawable.Drawable; +import android.net.Uri; +import android.preference.DialogPreference; +import android.util.AttributeSet; +import android.view.View; +import android.view.ViewGroup; +import android.widget.ArrayAdapter; +import android.widget.ListAdapter; +import android.widget.TextView; +import org.openintents.openpgp.R; + +import java.util.ArrayList; +import java.util.List; + +/** + * Does not extend ListPreference, but is very similar to it! + * http://grepcode.com/file_/repository.grepcode.com/java/ext/com.google.android/android/4.4_r1/android/preference/ListPreference.java/?v=source + */ +public class OpenPgpListPreference extends DialogPreference { + private static final String OPENKEYCHAIN_PACKAGE = "org.sufficientlysecure.keychain"; + private static final String MARKET_INTENT_URI_BASE = "market://details?id=%s"; + private static final Intent MARKET_INTENT = new Intent(Intent.ACTION_VIEW, Uri.parse( + String.format(MARKET_INTENT_URI_BASE, OPENKEYCHAIN_PACKAGE))); + + private ArrayList<OpenPgpProviderEntry> mLegacyList = new ArrayList<OpenPgpProviderEntry>(); + private ArrayList<OpenPgpProviderEntry> mList = new ArrayList<OpenPgpProviderEntry>(); + + private String mSelectedPackage; + + public OpenPgpListPreference(Context context, AttributeSet attrs) { + super(context, attrs); + } + + public OpenPgpListPreference(Context context) { + this(context, null); + } + + /** + * Public method to add new entries for legacy applications + * + * @param packageName + * @param simpleName + * @param icon + */ + public void addLegacyProvider(int position, String packageName, String simpleName, Drawable icon) { + mLegacyList.add(position, new OpenPgpProviderEntry(packageName, simpleName, icon)); + } + + @Override + protected void onPrepareDialogBuilder(Builder builder) { + mList.clear(); + + // add "none"-entry + mList.add(0, new OpenPgpProviderEntry("", + getContext().getString(R.string.openpgp_list_preference_none), + getContext().getResources().getDrawable(R.drawable.ic_action_cancel_launchersize))); + + // add all additional (legacy) providers + mList.addAll(mLegacyList); + + // search for OpenPGP providers... + ArrayList<OpenPgpProviderEntry> providerList = new ArrayList<OpenPgpProviderEntry>(); + Intent intent = new Intent(OpenPgpApi.SERVICE_INTENT); + List<ResolveInfo> resInfo = getContext().getPackageManager().queryIntentServices(intent, 0); + if (!resInfo.isEmpty()) { + for (ResolveInfo resolveInfo : resInfo) { + if (resolveInfo.serviceInfo == null) + continue; + + String packageName = resolveInfo.serviceInfo.packageName; + String simpleName = String.valueOf(resolveInfo.serviceInfo.loadLabel(getContext() + .getPackageManager())); + Drawable icon = resolveInfo.serviceInfo.loadIcon(getContext().getPackageManager()); + + providerList.add(new OpenPgpProviderEntry(packageName, simpleName, icon)); + } + } + + if (providerList.isEmpty()) { + // add install links if provider list is empty + resInfo = getContext().getPackageManager().queryIntentActivities + (MARKET_INTENT, 0); + for (ResolveInfo resolveInfo : resInfo) { + Intent marketIntent = new Intent(MARKET_INTENT); + marketIntent.setPackage(resolveInfo.activityInfo.packageName); + Drawable icon = resolveInfo.activityInfo.loadIcon(getContext().getPackageManager()); + String marketName = String.valueOf(resolveInfo.activityInfo.applicationInfo + .loadLabel(getContext().getPackageManager())); + String simpleName = String.format(getContext().getString(R.string + .openpgp_install_openkeychain_via), marketName); + mList.add(new OpenPgpProviderEntry(OPENKEYCHAIN_PACKAGE, simpleName, + icon, marketIntent)); + } + } else { + // add provider + mList.addAll(providerList); + } + + // Init ArrayAdapter with OpenPGP Providers + ListAdapter adapter = new ArrayAdapter<OpenPgpProviderEntry>(getContext(), + android.R.layout.select_dialog_singlechoice, android.R.id.text1, mList) { + public View getView(int position, View convertView, ViewGroup parent) { + // User super class to create the View + View v = super.getView(position, convertView, parent); + TextView tv = (TextView) v.findViewById(android.R.id.text1); + + // Put the image on the TextView + tv.setCompoundDrawablesWithIntrinsicBounds(mList.get(position).icon, null, + null, null); + + // Add margin between image and text (support various screen densities) + int dp10 = (int) (10 * getContext().getResources().getDisplayMetrics().density + 0.5f); + tv.setCompoundDrawablePadding(dp10); + + return v; + } + }; + + builder.setSingleChoiceItems(adapter, getIndexOfProviderList(getValue()), + new DialogInterface.OnClickListener() { + + @Override + public void onClick(DialogInterface dialog, int which) { + OpenPgpProviderEntry entry = mList.get(which); + + if (entry.intent != null) { + /* + * Intents are called as activity + * + * Current approach is to assume the user installed the app. + * If he does not, the selected package is not valid. + * + * However applications should always consider this could happen, + * as the user might remove the currently used OpenPGP app. + */ + getContext().startActivity(entry.intent); + } + + mSelectedPackage = entry.packageName; + + /* + * Clicking on an item simulates the positive button click, and dismisses + * the dialog. + */ + OpenPgpListPreference.this.onClick(dialog, DialogInterface.BUTTON_POSITIVE); + dialog.dismiss(); + } + }); + + /* + * The typical interaction for list-based dialogs is to have click-on-an-item dismiss the + * dialog instead of the user having to press 'Ok'. + */ + builder.setPositiveButton(null, null); + } + + @Override + protected void onDialogClosed(boolean positiveResult) { + super.onDialogClosed(positiveResult); + + if (positiveResult && (mSelectedPackage != null)) { + if (callChangeListener(mSelectedPackage)) { + setValue(mSelectedPackage); + } + } + } + + private int getIndexOfProviderList(String packageName) { + for (OpenPgpProviderEntry app : mList) { + if (app.packageName.equals(packageName)) { + return mList.indexOf(app); + } + } + + return -1; + } + + public void setValue(String packageName) { + mSelectedPackage = packageName; + persistString(packageName); + } + + public String getValue() { + return mSelectedPackage; + } + + public String getEntry() { + return getEntryByValue(mSelectedPackage); + } + + @Override + protected Object onGetDefaultValue(TypedArray a, int index) { + return a.getString(index); + } + + @Override + protected void onSetInitialValue(boolean restoreValue, Object defaultValue) { + setValue(restoreValue ? getPersistedString(mSelectedPackage) : (String) defaultValue); + } + + public String getEntryByValue(String packageName) { + for (OpenPgpProviderEntry app : mList) { + if (app.packageName.equals(packageName)) { + return app.simpleName; + } + } + + return null; + } + + private static class OpenPgpProviderEntry { + private String packageName; + private String simpleName; + private Drawable icon; + private Intent intent; + + public OpenPgpProviderEntry(String packageName, String simpleName, Drawable icon) { + this.packageName = packageName; + this.simpleName = simpleName; + this.icon = icon; + } + + public OpenPgpProviderEntry(String packageName, String simpleName, Drawable icon, Intent intent) { + this(packageName, simpleName, icon); + this.intent = intent; + } + + @Override + public String toString() { + return simpleName; + } + } +} |