Add compat version of preference fragment

Author: Tunous

library/src/org/wordpress/passcodelock/PasscodePreferenceFragmentCompat.java

@@ -0,0 +1,104 @@
+package org.wordpress.passcodelock;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceFragmentCompat;
+
+public class PasscodePreferenceFragmentCompat extends PreferenceFragmentCompat
+        implements Preference.OnPreferenceClickListener {
+    public static final String KEY_SHOULD_INFLATE = "should-inflate";
+    public static final int ENABLE_PASSLOCK  = 0;
+    public static final int DISABLE_PASSLOCK = 1;
+    public static final int CHANGE_PASSWORD  = 2;
+
+    private Preference mTogglePasscodePreference;
+    private Preference mChangePasscodePreference;
+
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        Bundle args = getArguments();
+
+        if (args != null && args.getBoolean(KEY_SHOULD_INFLATE, true)) {
+            addPreferencesFromResource(R.xml.passcode_preferences);
+            mTogglePasscodePreference = findPreference(getString(R.string.pref_key_passcode_toggle));
+            mChangePasscodePreference = findPreference(getString(R.string.pref_key_change_passcode));
+        }
+
+        refreshPreferenceState();
+    }
+
+    @Override
+    public boolean onPreferenceClick(Preference preference) {
+        String preferenceKey = preference.getKey() != null ? preference.getKey() : "";
+
+        if (preferenceKey.equals(getString(R.string.pref_key_passcode_toggle))) {
+            return handlePasscodeToggleClick();
+        } else if (preferenceKey.equals(getString(R.string.pref_key_change_passcode))) {
+            return handleChangePasscodeClick();
+        }
+
+        return false;
+    }
+
+    /**
+     * When the preferences are nested in a parent apps xml layout the inflated preferences will
+     * need to be set.
+     */
+    public void setPreferences(Preference togglePreference, Preference changePreference) {
+        mTogglePasscodePreference = togglePreference;
+        mChangePasscodePreference = changePreference;
+
+        refreshPreferenceState();
+    }
+
+    /**
+     * Called when user requests to turn the passlock on or off.
+     *
+     * @return
+     *  always true to indicate that the request was handled
+     */
+    private boolean handlePasscodeToggleClick() {
+        int type = AppLockManager.getInstance().getAppLock().isPasswordLocked()
+                ? DISABLE_PASSLOCK : ENABLE_PASSLOCK;
+        Intent i = new Intent(getActivity(), PasscodeManagePasswordActivity.class);
+        i.putExtra(PasscodeManagePasswordActivity.KEY_TYPE, type);
+        startActivityForResult(i, type);
+
+        return true;
+    }
+
+    /**
+     * Called when user requests to change passcode.
+     *
+     * @return
+     *  always true to indicate that the request was handled
+     */
+    private boolean handleChangePasscodeClick() {
+        Intent i = new Intent(getActivity(), PasscodeManagePasswordActivity.class);
+        i.putExtra(PasscodeManagePasswordActivity.KEY_TYPE, CHANGE_PASSWORD);
+        i.putExtra(AbstractPasscodeKeyboardActivity.KEY_MESSAGE,
+                getString(R.string.passcode_enter_old_passcode));
+        startActivityForResult(i, CHANGE_PASSWORD);
+
+        return true;
+    }
+
+    /**
+     * Helper method to setup preference properties
+     */
+    private void refreshPreferenceState() {
+        if (mTogglePasscodePreference != null && mChangePasscodePreference != null) {
+            mTogglePasscodePreference.setOnPreferenceClickListener(this);
+            mChangePasscodePreference.setOnPreferenceClickListener(this);
+
+            if (AppLockManager.getInstance().getAppLock().isPasswordLocked()) {
+                mTogglePasscodePreference.setTitle(R.string.passcode_turn_off);
+                mChangePasscodePreference.setEnabled(true);
+            } else {
+                mTogglePasscodePreference.setTitle(R.string.passcode_turn_on);
+                mChangePasscodePreference.setEnabled(false);
+            }
+        }
+    }
+}