xapi.elemental.impl.ElementalServiceDefault Maven / Gradle / Ivy

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Everything needed to run a comprehensive dev environment. Just type X_ and pick a service from autocomplete; new dev modules will be added as they are built. The only dev service not included in the uber jar is xapi-dev-maven, as it includes all runtime dependencies of maven, adding ~4 seconds to build time, and 6 megabytes to the final output jar size (without xapi-dev-maven, it's ~1MB).

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/**
 *
 */
package xapi.elemental.impl;

import com.google.gwt.core.shared.GwtIncompatible;

import elemental.dom.Element;

import xapi.annotation.inject.SingletonDefault;
import xapi.elemental.api.ElementalService;
import xapi.elemental.api.PotentialNode;
import xapi.source.api.Lexer;
import xapi.source.impl.LexerForWords;
import xapi.source.impl.StringCharIterator;
import xapi.ui.html.X_Html;
import xapi.ui.html.impl.StyleServiceDefault;
import xapi.util.api.ConvertsValue;

/**
 * @author "James X. Nelson ([email protected])"
 */
@SingletonDefault(implFor=ElementalService.class)
public class ElementalServiceDefault
extends StyleServiceDefault
implements ElementalService {

  private Lexer lexer;

  @Override
  public  E toElement(Class cls, T obj) {
    return this.toElementBuilder(cls).convert(obj).getElement();
  }

  @Override
  public  E toElement(Class cls, Class template, T obj) {
    return this.toElementBuilder(cls, template).convert(obj).getElement();
  }

  public  ConvertsValue> toElementBuilder(final Class cls) {
    return toElementBuilder(cls, cls);
  }

  static class UnsupportedConverter  implements ConvertsValue {

    @Override
    public E convert(T from) {
      throw new UnsupportedOperationException();
    }
    
  }
  @Override
  public  ConvertsValue> toElementBuilder(final Class cls, Class template) {
    return new UnsupportedConverter>() {
      @SuppressWarnings({
          "unchecked", "rawtypes"
      } )
      @Override
      @GwtIncompatible
      public PotentialNode convert(T from) {
        Class c = cls;// Erase generics; gwt doesn't like them much
        return new PotentialNode(X_Html.toHtml(template, c, from, ElementalServiceDefault.this));
      }
    };
  }

  @Override
  public void loadGoogleFonts(String ... fonts) {
    StringBuilder b = new StringBuilder(
      "@import url("
        + "https://fonts.googleapis.com/css?family=");
    for (int i = 0; i < fonts.length; i++) {
      String font = fonts[i];
      if (i > 0) {
        b.append("|");
      }
      // TODO proper uri encoding later
      b.append(font.replace(' ', '+'));
    }
    b.append(");");
    addCss(b.toString(), 0);
  }

  @Override
  public String enhanceMarkup(String markup) {
    if (lexer == null) {
      return markup;
    }
    try {
      return lexer.lex(markup).toString();
    } finally {
      lexer.clear();
    }
  }

  /**
   * @return the lexer
   */
  public Lexer getLexer() {
    return lexer;
  }

  /**
   * @param lexer the lexer to set
   */
  @Override
  public void setLexer(Lexer lexer) {
    this.lexer = lexer;
  }

  @Override
  public  PotentialNode newNode(String tagname) {
    return new PotentialNode(tagname);
  }

  @Override
  public  PotentialNode newNode(E node) {
    return new PotentialNode(node);
  }

  @Override
  public  PotentialNode newNode() {
    return new PotentialNode();
  }

  @Override
  public  E initialize(E element) {
    return element;
  }

  @Override
  public  ConvertsValue asConverter() {
    return new ConvertsValue() {
      @Override
      public E convert(E from) {
        return initialize(from);
      }
    };
  }

}