br.com.objectos.way.reports.htmltopdf.HtmltopdfGuice Maven / Gradle / Ivy

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/*
 * Copyright 2013 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.way.reports.htmltopdf;

import java.io.File;

import com.google.common.base.Preconditions;
import com.google.inject.Inject;

/**
 * @author Marcio Endo ([email protected])
 */
class HtmltopdfGuice implements Htmltopdf {

  private final HtmltopdfDelegate delegate;

  @Inject
  public HtmltopdfGuice(HtmltopdfDelegate delegate) {
    this.delegate = delegate;
  }

  @Override
  public Authenticate authenticateTo(String authUrl) {
    return Config.forAuthenticate(delegate, authUrl);
  }

  @Override
  public Get get(String url) {
    return Config.forGet(delegate, url);
  }

  static class Config implements Authenticate, Get, HtmltopdfOptions {

    private final HtmltopdfDelegate delegate;

    private String url;

    private File file;

    private AuthInfo authInfo;

    private final Page page = new Page();

    private HeaderFooter header;

    private HeaderFooter footer;

    private Config(HtmltopdfDelegate delegate) {
      this.delegate = delegate;
    }

    public static Config forAuthenticate(HtmltopdfDelegate delegate, String authUrl) {
      return new Config(delegate).authUrl(authUrl);
    }
    public static Config forGet(HtmltopdfDelegate delegate, String url) {
      return new Config(delegate).url(url);
    }

    public Config authUrl(String authUrl) {
      this.authInfo = new AuthInfo(authUrl);
      return this;
    }

    public Config url(String url) {
      this.url = url;
      return this;
    }

    @Override
    public Authenticate post(String name, String value) {
      authInfo.post(name, value);
      return this;
    }

    @Override
    public Get get(String url) {
      this.url = url;
      return this;
    }

    @Override
    public Get toPaperFormat(PaperFormat format) {
      PaperSize size = page.getPaperSize();
      size.format(format);
      return this;
    }

    @Override
    public Get orientedAs(Orientation orientation) {
      PaperSize size = page.getPaperSize();
      size.orientation(orientation);
      return this;
    }

    @Override
    public WithMargins withMargins() {
      PaperSize size = page.getPaperSize();
      Margin margin = size.getMargin();
      return new WithMarginsImpl(margin);
    }

    @Override
    public Get withoutMargins() {
      PaperSize size = page.getPaperSize();
      size.withoutMargins();
      return this;
    }

    @Override
    public WithHeader withHeader() {
      header = new HeaderFooter();
      return new WithHeaderImpl(header);
    }

    @Override
    public WithFooter withFooter() {
      footer = new HeaderFooter();
      return new WithFooterImpl(footer);
    }

    @Override
    public File andWriteTo(File file) {
      Preconditions.checkNotNull(url);
      Preconditions.checkNotNull(file);

      this.file = file;
      delegate.render(this);
      return file;
    }

    // HtmltopdfOptions

    @Override
    public String getUrl() {
      return url;
    }

    @Override
    public File getFile() {
      return file;
    }

    @Override
    public AuthInfo getAuthInfo() {
      return authInfo;
    }

    @Override
    public Page getPage() {
      return page;
    }

    @Override
    public HeaderFooter getHeader() {
      return header;
    }

    @Override
    public HeaderFooter getFooter() {
      return footer;
    }

    @Override
    public String toString() {
      return url;
    }

    private class WithMarginsImpl implements WithMargins {

      private final Margin margin;

      public WithMarginsImpl(Margin margin) {
        this.margin = margin;
      }

      @Override
      public WithMargins top(int size, Unit unit) {
        margin.top(size, unit);
        return this;
      }

      @Override
      public WithMargins right(int size, Unit unit) {
        margin.right(size, unit);
        return this;
      }

      @Override
      public WithMargins bottom(int size, Unit unit) {
        margin.bottom(size, unit);
        return this;
      }

      @Override
      public WithMargins left(int size, Unit unit) {
        margin.left(size, unit);
        return this;
      }

      @Override
      public Get resized() {
        return Config.this;
      }

    }

    private class WithHeaderImpl implements WithHeader {

      private final HeaderFooter header;

      private WithHeaderImpl(HeaderFooter header) {
        this.header = header;
      }

      @Override
      public WithHeader height(int size, Unit unit) {
        header.height(size, unit);
        return this;
      }

      @Override
      public WithHeader contents(String contents) {
        header.contents(contents);
        return this;
      }

      @Override
      public Get customized() {
        return Config.this;
      }

    }

    private class WithFooterImpl implements WithFooter {

      private final HeaderFooter footer;

      private WithFooterImpl(HeaderFooter footer) {
        this.footer = footer;
      }

      @Override
      public WithFooter height(int size, Unit unit) {
        footer.height(size, unit);
        return this;
      }

      @Override
      public WithFooter contents(String contents) {
        footer.contents(contents);
        return this;
      }

      @Override
      public Get customized() {
        return Config.this;
      }

    }

  }

}