source: release-kits/shared/ant-installer/src/org/tp23/antinstaller/renderer/text/LargeSelectInputRenderer.java@ 17514

/* 
 * Copyright 2005 Paul Hinds
 *
 * 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.tp23.antinstaller.renderer.text;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ResourceBundle;

import org.tp23.antinstaller.InstallerContext;
import org.tp23.antinstaller.input.LargeSelectInput;
import org.tp23.antinstaller.input.OutputField;


public class LargeSelectInputRenderer
    implements TextOutputFieldRenderer {

    private static final String nextChar = org.tp23.antinstaller.Installer.langPack.getString("nextChar");

    protected InstallerContext ctx;
    public LargeSelectInputRenderer() {
    }

    public void setContext(InstallerContext ctx) {
        this.ctx = ctx;
    }

    public void renderOutput(OutputField field, BufferedReader reader, PrintStream out) throws IOException {
        LargeSelectInput iField = (LargeSelectInput) field;

        printText(iField,out,reader);
        String input = reader.readLine();
        out.println();
        if(input == null || input.equals("")) {
            input = iField.getDefaultValue();
        }
        else {
            try {
                int idx = Integer.parseInt(input.trim());
                input = iField.getOptions()[idx - 1].value;
            } catch(Exception numFormatOrIndexOutOfBounds) {
                return;
            }
        }
        iField.setInputResult(input);
    }
    
    public boolean isAbort(){
        return false;
    }
    private void printText(LargeSelectInput iField, PrintStream out,BufferedReader reader) throws IOException{
        out.println(iField.getDisplayText());
        LargeSelectInput.Option[] options = iField.getOptions();
        out.print("  ");
        out.println(org.tp23.antinstaller.Installer.langPack.getString("availableOptions"));
        StringBuffer optionsData = new StringBuffer();
        for (int i = 0; i < options.length; i++) {
            optionsData.append("  ");
            optionsData.append(i+1);
            optionsData.append(") ");
            optionsData.append(options[i].getText());
            if(iField.getDefaultValue().equals(options[i].value)){
                optionsData.append(" [");
                optionsData.append(org.tp23.antinstaller.Installer.langPack.getString("_default_"));
                optionsData.append("]");
            }
            optionsData.append("\n");
        }
        optionsData.append("  ");
        optionsData.append(org.tp23.antinstaller.Installer.langPack.getString("enterNumber")).append("\n");
        Pager pager = new Pager(optionsData.toString());
        String command = null;
        do {
            if (!pager.next(out)) {
                break;
            }
            out.println();
            out.println(getNextInstructions());
            command = reader.readLine();
        }
        while (command.toUpperCase().startsWith( nextChar ));
        pager.rest(out);

    }



    /**
     * renderError
     *
     * @param field InputField
     * @param out PrintStream
     */
    public void renderError(OutputField field, BufferedReader reader, PrintStream out) throws IOException {
        ctx.getMessageRenderer().printMessage("Not a valid selection");
        renderOutput(field, reader, out);
    }
    private String getNextInstructions() {
        return org.tp23.antinstaller.Installer.langPack.getString("large_select_next");
    }
}