Give more flexibility for the destination of style declarations

[jferard]

For TableCellStyles and TextStyles, one should be able to decide whether they go in styles.xml or content.xml.

Some ideas:

• distinguish TableCellStyle (in styles.xml > styles) and TableCellHiddenStyle (in content.xml > automatic-styles).
• the result of a stylesContainer.addChildCellStyle would be a TableCellHiddenStyle.
• one could create, with a builder.buildHidden, a TableCellHiddenStyle.
• distinguish TextStyle (in styles.xml > common-styles) and TextHiddenStyle (in content.xml > automatic-styles).
• ...

[jferard]

Every style may be in styles.xml > styles or in content.xml > automatic-styles. The meaning of the qualifier "automatic" is not obvious. I will use the term "hidden", which means "hidden to the end user in LO". Thus: every style may be hidden or not hidden. Steps:

1. create a boolean isHidden() method in DataStyle and StyleTag interfaces;
2. create a buildHidden() for each builder;
3. create a hidden field in each object style (row style, cell style, table style, ...) and in data style;
4. check in StylesContainer if the styles are in the right container.

If everything is fine, let StylesContainer choose the container on the isHidden value.

[jferard]

This method of OdsElements does type-checking:

public void addObjectStyle(final ObjectStyle objectStyle) {
    final String family = objectStyle.getFamily();
    if ("table-cell".equals(family))
        this.stylesContainer.addStyleToStylesCommonStyles(objectStyle);
    else if ("text".equals(family))
        this.stylesContainer.addStyleToStylesAutomaticStyles(objectStyle);
    else
        this.stylesContainer.addStyleToContentAutomaticStyles(objectStyle);
}

It will be replaced after refactoring by:

public void addObjectStyle(final ObjectStyle objectStyle) {
    if (objectStyle.isHidden()) // text
        this.stylesContainer.addStyleToStylesAutomaticStyles(objectStyle);
    else // table cell and other
        this.stylesContainer.addStyleToContentAutomaticStyles(objectStyle);
}