org.kuali.rice.krad.theme.postprocessor
Class ThemeCssFilesProcessor

java.lang.Object
  org.kuali.rice.krad.theme.postprocessor.ThemeFilesProcessor
      org.kuali.rice.krad.theme.postprocessor.ThemeCssFilesProcessor

public class ThemeCssFilesProcessor
extends ThemeFilesProcessor

Theme files processor for CSS files

Merge contents are processed to rewrite any URLs (to images) for the changed path. CSS includes are not rewritten and will not work correctly in the merged file. For minification, the YUI compressor is used: YUI Compressor

Author:

Kuali Rice Team (rice.collab@kuali.org)

See Also:

ThemeFilesProcessor, CssCompressor

Field Summary

protected int

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Fields inherited from class org.kuali.rice.krad.theme.postprocessor.ThemeFilesProcessor

PLUGIN_FILES_KEY, projectVersion, SUBDIR_FILES_KEY, themeDirectory, themeName, themePluginDirsMap, themeProperties, workingDir

Constructor Summary

ThemeCssFilesProcessor(String themeName, File themeDirectory, Properties themeProperties, Map<String,File> themePluginDirsMap, File workingDir, String projectVersion)

Method Summary

protected void	addAdditionalFiles(List<File> themeFiles) Invoked during the collection of files to allow additional files to be added to the theme's list
protected String	getExcludesConfigKey() Key for the property within the theme's properties file that can be configured to exlcude files of the type being processed
protected String	getFileListingConfigKey() Key for the property that will be written to the theme derived properties to list the included files for the file type
protected String	getFileTypeDirectoryName() Name of the directory relative to the theme directory which contains files for the type
protected String	getFileTypeExtension() Extension (ex.
protected void	minify(File mergedFile, File minifiedFile) Minifies the CSS contents from the given merged file into the minified file
protected String	processMergeFileContents(String fileContents, File fileToMerge, File mergedFile) Processes the merge contents to rewrite any URLs necessary for the directory change
protected String	rewriteCssUrls(String css, File mergeFile, File mergedFile) Performs URL rewriting within the given CSS contents
protected List<File>	sortThemeFiles(List<File> pluginFiles, List<File> subDirFiles) Sorts the list of CSS files from the plugin and sub directories

Methods inherited from class org.kuali.rice.krad.theme.postprocessor.ThemeFilesProcessor

addMissingPluginDirs, collectThemeFiles, createMergedFile, getFileExcludes, getFileIncludes, getFileTypeSubDirectory, getPropertyValueAsPluginDirs, getThemePropertyValue, mergeFiles, process

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

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protected int linebreak

Constructor Detail

ThemeCssFilesProcessor

public ThemeCssFilesProcessor(String themeName,
                              File themeDirectory,
                              Properties themeProperties,
                              Map<String,File> themePluginDirsMap,
                              File workingDir,
                              String projectVersion)

Method Detail

getFileTypeExtension

protected String getFileTypeExtension()

Description copied from class: ThemeFilesProcessor

Extension (ex. 'css') for the file type being processed

Specified by:

getFileTypeExtension in class ThemeFilesProcessor

Returns:

file type extension

See Also:

ThemeFilesProcessor.getFileTypeExtension()

getExcludesConfigKey

protected String getExcludesConfigKey()

Description copied from class: ThemeFilesProcessor

Key for the property within the theme's properties file that can be configured to exlcude files of the type being processed

Specified by:

getExcludesConfigKey in class ThemeFilesProcessor

Returns:

property key for file type excludes

See Also:

ThemeFilesProcessor.getExcludesConfigKey()

getFileTypeDirectoryName

protected String getFileTypeDirectoryName()

Description copied from class: ThemeFilesProcessor

Name of the directory relative to the theme directory which contains files for the type

Specified by:

getFileTypeDirectoryName in class ThemeFilesProcessor

Returns:

directory name

See Also:

ThemeFilesProcessor.getFileTypeDirectoryName()

getFileListingConfigKey

protected String getFileListingConfigKey()

Description copied from class: ThemeFilesProcessor

Key for the property that will be written to the theme derived properties to list the included files for the file type

Specified by:

getFileListingConfigKey in class ThemeFilesProcessor

Returns:

property key for file type listing

See Also:

ThemeFilesProcessor.getFileListingConfigKey()

addAdditionalFiles

protected void addAdditionalFiles(List<File> themeFiles)

Description copied from class: ThemeFilesProcessor

Invoked during the collection of files to allow additional files to be added to the theme's list

Specified by:

addAdditionalFiles in class ThemeFilesProcessor

Parameters:

themeFiles - list of additional files to included for the theme

See Also:

ThemeFilesProcessor#addAdditionalFiles(java.util.List)

sortThemeFiles

protected List<File> sortThemeFiles(List<File> pluginFiles,
                                    List<File> subDirFiles)

Sorts the list of CSS files from the plugin and sub directories

The sorting algorithm is as follows:

1. Any files which match patterns configured by the property cssLoadFirst
2. CSS files from plugin directories, first ordered by any files that match patterns configured with pluginCssLoadOrder, followed by all remaining plugin files
3. CSS files from the theme subdirectory, first ordered by any files that match patterns configured with themeCssLoadOrder, then any remaining theme files
4. Files that match patterns configured by the property cssLoadLast. Note any files that match here will be excluded from any of the previous steps

Specified by:

sortThemeFiles in class ThemeFilesProcessor

Parameters:

pluginFiles - list of files that will be included and come from a plugin directory

subDirFiles - list of files that will be included and come from the theme subdirectory

Returns:

list of all files to include for the theme in the correct source order

See Also:

ThemeFilesProcessor#sortThemeFiles(java.util.List, java.util.List)

processMergeFileContents

protected String processMergeFileContents(String fileContents,
                                          File fileToMerge,
                                          File mergedFile)
                                   throws IOException

Processes the merge contents to rewrite any URLs necessary for the directory change

Specified by:

processMergeFileContents in class ThemeFilesProcessor

Parameters:

fileContents - contents of the file that will be added

fileToMerge - file the contents were pulled from

mergedFile - file receiving the merged contents

Returns:

file contents to merge (possibly altered)

Throws:

IOException

See Also:

ThemeFilesProcessor.processMergeFileContents(java.lang.String, java.io.File, java.io.File)

rewriteCssUrls

protected String rewriteCssUrls(String css,
                                File mergeFile,
                                File mergedFile)
                         throws IOException

Performs URL rewriting within the given CSS contents

The given merge file (where the merge contents come from) and the merged file (where they are going to) is used to determine the path difference. Once that path difference is found, the contents are then matched to find any URLs. For each relative URL (absolute URLs are not modified), the path is adjusted and replaced into the contents. ex. suppose the merged file is /plugins/foo/plugin.css, and the merged file is /themes/mytheme/stylesheets/merged.css, the path difference will then be '../../../plugins/foo/'. So a URL in the CSS contents of 'images/image.png' will get rewritten to '../../../plugins/foo/images/image.png'

Parameters:

css - contents to adjust URLs for

mergeFile - file that provided the merge contents

mergedFile - file the contents will be going to

Returns:

css contents, with possible adjusted URLs

Throws:

IOException

minify

protected void minify(File mergedFile,
                      File minifiedFile)
               throws IOException

Minifies the CSS contents from the given merged file into the minified file

Minification is performed using the YUI Compressor compiler with no line break

Specified by:

minify in class ThemeFilesProcessor

Parameters:

mergedFile - file containing the merged contents

minifiedFile - file created to receive the minified contents

Throws:

IOException

See Also:

ThemeFilesProcessor.minify(java.io.File, java.io.File), CssCompressor