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## com.google.gwt.core.linker
Class IFrameLinker

    java.lang.Object
      com.google.gwt.core.ext.Linker
          com.google.gwt.core.ext.linker.AbstractLinker
              com.google.gwt.core.ext.linker.impl.SelectionScriptLinker
                  com.google.gwt.core.linker.IFrameLinker

    @LinkerOrder(value=PRIMARY)
    public class IFrameLinker

extends com.google.gwt.core.ext.linker.impl.SelectionScriptLinker

Implements the canonical GWT bootstrap sequence that loads the GWT module in a separate iframe.

Field Summary

Fields inherited from class com.google.gwt.core.ext.linker.impl.SelectionScriptLinker
`FRAGMENT_EXTENSION, FRAGMENT_SUBDIR`

Constructor Summary
`IFrameLinker()`

Method Summary
`protected byte[]` | `generatePrimaryFragment(TreeLogger logger, LinkerContext context, CompilationResult result, java.lang.String[] js)` This implementation divides the code of the initial fragment into multiple script tags.
`protected java.lang.String` | `getCompilationExtension(TreeLogger logger, LinkerContext context)`
`java.lang.String` | `getDescription()` Returns a human-readable String describing the Linker.
`protected java.lang.String` | `getFragmentSubdir()` Returns the subdirectory name to be used by getModulPrefix when requesting a runAsync module.
`protected java.lang.String` | `getModulePrefix(TreeLogger logger, LinkerContext context, java.lang.String strongName)`
`protected java.lang.String` | `getModulePrefix(TreeLogger logger, LinkerContext context, java.lang.String strongName, int numFragments)`
`protected java.lang.String` | `getModuleSuffix(TreeLogger logger, LinkerContext context)`
`protected java.lang.String` | `getSelectionScriptTemplate(TreeLogger logger, LinkerContext context)`
`ArtifactSet` | `link(TreeLogger logger, LinkerContext context, ArtifactSet artifacts)` Invoke the Linker.
`protected java.lang.String` | `modifyPrimaryJavaScript(java.lang.String js)`

Methods inherited from class com.google.gwt.core.ext.linker.impl.SelectionScriptLinker
`doEmitCompilation, emitSelectionScript, generatePropertyProvider, generateScriptInjector, generateSelectionScript, generateStylesheetInjector, getCompilationStrongName, isRelativeURL, replaceAll`

Methods inherited from class com.google.gwt.core.ext.linker.AbstractLinker
`emitBytes, emitBytes, emitInputStream, emitInputStream, emitString, emitString, emitWithStrongName, emitWithStrongName`

Methods inherited from class com.google.gwt.core.ext.Linker
`relink`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### IFrameLinker

    public IFrameLinker()

Method Detail

### getDescription

    public java.lang.String getDescription()

  Description copied from class: `Linker`
  Returns a human-readable String describing the Linker.

  Specified by:
    `getDescription` in class `Linker`

### link

    public ArtifactSet link(TreeLogger logger,
                            LinkerContext context,
                            ArtifactSet artifacts)
                     throws UnableToCompleteException

  Description copied from class: `Linker`
  Invoke the Linker.

  Overrides:
    `link` in class `com.google.gwt.core.ext.linker.impl.SelectionScriptLinker`
  Parameters:
    `logger` - the TreeLogger to record to
    `context` - provides access to the Linker's environment
    `artifacts` - an unmodifiable view of the artifacts to link
  Returns:
    the artifacts that should be propagated through the linker chain
  Throws:
    `UnableToCompleteException` - if compilation violates assumptions made by the Linker or for errors encountered by the Linker

### generatePrimaryFragment

    protected byte[] generatePrimaryFragment(TreeLogger logger,
                                             LinkerContext context,
                                             CompilationResult result,
                                             java.lang.String[] js)
                                      throws UnableToCompleteException

  This implementation divides the code of the initial fragment into multiple script tags. These chunked script tags loads faster on Firefox even when the data is cached. Additionally, having the script tags separated means that the early ones can be evaluated before the later ones have finished downloading. As a result of this parallelism, the overall time to get the JavaScript downloaded and evaluated can lower.

  Overrides:
    `generatePrimaryFragment` in class `com.google.gwt.core.ext.linker.impl.SelectionScriptLinker`
  Throws:
    `UnableToCompleteException`

### getCompilationExtension

    protected java.lang.String getCompilationExtension(TreeLogger logger,
                                                       LinkerContext context)

  Specified by:
    `getCompilationExtension` in class `com.google.gwt.core.ext.linker.impl.SelectionScriptLinker`

### getFragmentSubdir

    protected java.lang.String getFragmentSubdir()

  Returns the subdirectory name to be used by getModulPrefix when requesting a runAsync module. The default implementation returns the value of FRAGMENT_SUDBIR. This has been factored out for test cases.

### getModulePrefix

    protected java.lang.String getModulePrefix(TreeLogger logger,
                                               LinkerContext context,
                                               java.lang.String strongName)

  Specified by:
    `getModulePrefix` in class `com.google.gwt.core.ext.linker.impl.SelectionScriptLinker`

### getModulePrefix

    protected java.lang.String getModulePrefix(TreeLogger logger,
                                               LinkerContext context,
                                               java.lang.String strongName,
                                               int numFragments)

  Overrides:
    `getModulePrefix` in class `com.google.gwt.core.ext.linker.impl.SelectionScriptLinker`

### getModuleSuffix

    protected java.lang.String getModuleSuffix(TreeLogger logger,
                                               LinkerContext context)

  Specified by:
    `getModuleSuffix` in class `com.google.gwt.core.ext.linker.impl.SelectionScriptLinker`

### getSelectionScriptTemplate

    protected java.lang.String getSelectionScriptTemplate(TreeLogger logger,
                                                          LinkerContext context)

  Specified by:
    `getSelectionScriptTemplate` in class `com.google.gwt.core.ext.linker.impl.SelectionScriptLinker`

### modifyPrimaryJavaScript

    protected java.lang.String modifyPrimaryJavaScript(java.lang.String js)

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