GUICredentialsProvider.java

/*
 * Copyright (c) 2011, 2012 Roberto Tyley
 *
 * This file is part of 'Agit' - an Android Git client.
 *
 * Agit is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Agit is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/ .
 */

package com.madgag.agit;

import static com.madgag.agit.operations.OpNotification.alert;
import static com.madgag.agit.operations.OpPrompt.prompt;
import static com.madgag.agit.operations.OpPrompt.promptYesOrNo;

import com.google.inject.Inject;
import com.madgag.agit.operations.OpNotification;
import com.madgag.android.blockingprompt.BlockingPromptService;

import org.eclipse.jgit.errors.UnsupportedCredentialItem;
import org.eclipse.jgit.transport.CredentialItem;
import org.eclipse.jgit.transport.CredentialsProvider;
import org.eclipse.jgit.transport.URIish;

public class GUICredentialsProvider extends CredentialsProvider {

    @Inject
    BlockingPromptService blockingPrompt;

    @Override
    public boolean isInteractive() {
        return true;
    }

    @Override
    public boolean supports(CredentialItem... items) {
        return true;
    }

    @Override
    public boolean get(URIish uri, CredentialItem... items) throws UnsupportedCredentialItem {
        for (CredentialItem ci : items) {
            if (ci instanceof CredentialItem.YesNoType) {
                handle((CredentialItem.YesNoType) ci);
            } else if (ci instanceof CredentialItem.StringType) {
                handle(uri, (CredentialItem.StringType) ci);
            } else if (ci instanceof CredentialItem.CharArrayType) {
                handle(uri, (CredentialItem.CharArrayType) ci);
            } else {
                return false;
            }
        }
        return true;
    }

    private void handle(URIish uri, CredentialItem.StringType ci) {
        if (ci instanceof CredentialItem.Username && uri.getUser() != null) {
            ci.setValue(uri.getUser());
        } else {
            ci.setValue(blockingPrompt.request(prompt(String.class, uiNotificationFor(ci))));
        }
    }

    private void handle(URIish uri, CredentialItem.CharArrayType ci) {
        if (ci instanceof CredentialItem.Password && uri.getPass() != null) {
            ci.setValue(uri.getPass().toCharArray());
        } else {
            ci.setValue(blockingPrompt.request(prompt(String.class, uiNotificationFor(ci))).toCharArray());
        }
    }

    private void handle(CredentialItem.YesNoType ci) {
        ci.setValue(blockingPrompt.request(promptYesOrNo(uiNotificationFor(ci))));
    }

    private OpNotification uiNotificationFor(CredentialItem ci) {
        return alert(ci.getPromptText(), ci.getPromptText());
    }
}