/// ------------------------------------------------------------------------------------
/// <summary>
/// Makes changes in text structure when the context of the new paragraph style does not
/// match the context of the current paragraph style.
/// </summary>
/// <remarks>This method properly adjusts the text structure for newStyle; the style is
/// not applied here - the caller should do that.</remarks>
/// <param name="selHelper">the selection to which the new style is being applied</param>
/// <param name="curStyle">current style at the selection anchor</param>
/// <param name="newStyle">new style to be applied (has a new style context)</param>
/// <returns>Returns true if the style change can now be applied.</returns>
/// ------------------------------------------------------------------------------------
protected virtual bool AdjustTextStructure(SelectionHelper selHelper,
IStStyle curStyle, IStStyle newStyle)
{
SelLevInfo[] top = selHelper.GetLevelInfo(SelectionHelper.SelLimitType.Top);
SelLevInfo[] bottom = selHelper.GetLevelInfo(SelectionHelper.SelLimitType.Bottom);
ILocationTracker tracker = ((ITeView)Control).LocationTracker;
int scrLevelCount = tracker.GetLevelCount((int)ScrSection.ScrSectionTags.kflidContent);
// Adjustments will only be done in section level selections.
if (top.Length != scrLevelCount || bottom.Length != scrLevelCount)
return true;
// CASE 1: Change a section head to a content paragraph
// If style of paragraphs of the section heading are changed to something
// that is not a section head style, restructure heading paragraphs
if (top[1].tag == (int)ScrSection.ScrSectionTags.kflidHeading &&
newStyle.Structure == StructureValues.Body)
{
// these will be adjusted to the new indices after the structure is changed
int iSection = tracker.GetSectionIndexInBook(selHelper, SelectionHelper.SelLimitType.Top);
int iPara;
bool firstSectionInContext = (iSection == 0);
int iBook = tracker.GetBookIndex(selHelper, SelectionHelper.SelLimitType.Top);
ScrBook book = BookFilter.GetBook(iBook);
ScrSection section = (ScrSection)book.SectionsOS[iSection];
// for an interior section, need to check context of next section
if (!firstSectionInContext)
{
IScrSection prevSection = book.SectionsOS[iSection - 1];
firstSectionInContext = !SectionsHaveSameContext(section, prevSection);
}
// If all paragraphs of heading are selected, merge selected section
// with previous section
if (AreAllParagraphsSelected(top, bottom, section.HeadingOA))
{
if (!firstSectionInContext)
{
iPara = ScrSection.MergeIntoPreviousSectionContent(m_cache, book, iSection);
iSection--;
}
else
{
// Just need to move all heading paragraphs to the content. The move
// method will create a new empty heading paragraph.
iPara = 0;
section.MoveHeadingParasToContent(0);
}
}
// If selection starts at first paragraph of the heading, move heading paragraphs to
// content of previous section.
else if (top[0].ihvo == 0)
{
if (!firstSectionInContext)
{
iPara = ScrSection.MoveHeadingToPreviousSectionContent(m_cache,
book, iSection, bottom[0].ihvo);
iSection--;
}
else
{
// In this case, we want the selected paragraphs to become the content
// of a new section, and the preceding paragraph(s) to become the
// heading of the new section.
section.ChangeParagraphToSectionContent(top[0].ihvo,
bottom[0].ihvo - top[0].ihvo + 1);
// update insertion point to first paragraph(s) of new section content
iPara = 0;
}
}
else
{
// If selection bottoms at the last paragraph of the heading, move heading
// paragraphs to content of this section
if (section.HeadingOA.ParagraphsOS.Count - 1 == bottom[0].ihvo)
{
section.MoveHeadingParasToContent(top[0].ihvo);
iPara = 0;
}
else
// The selection must be only inner paragraphs in the section head,
// not including the first or last paragraphs.
// In this case, we want the selected paragraph(s) to become content for
// the heading paragraph(s) above it, and the following section head
// paragraph(s) become the heading of a new section object.
{
int iParaStart = top[0].ihvo;
int iParabottom = bottom[0].ihvo;
section.SplitSectionHeading(iSection, iParaStart, iParabottom);
iPara = 0;
}
}
// Select all paragraphs in content that were part of section heading (and have
// now been moved to iSection, iPara)
SetInsertionPoint(iBook, iSection, iPara, 0, false);
// Get bottom point of selection and update it to point to beginning of
// last paragraph of old heading. Use offsets of current selection.
SelectionHelper newHelper = SelectionHelper.Create(Callbacks.EditedRootBox.Site);
SelLevInfo[] levInfo = newHelper.GetLevelInfo(SelectionHelper.SelLimitType.End);
levInfo[0].ihvo += bottom[0].ihvo - top[0].ihvo;
newHelper.SetLevelInfo(SelectionHelper.SelLimitType.End, levInfo);
newHelper.IchAnchor = selHelper.GetIch(SelectionHelper.SelLimitType.Top);
newHelper.IchEnd = selHelper.GetIch(SelectionHelper.SelLimitType.Bottom);
newHelper.SetSelection(true);
} //bottom of CASE 1 "Change a section head to a scripture paragraph"
// CASE 2: Change scripture paragraph to a section head
// - only if the new style has "section head" structure, the selection is in
// one paragraph, and that paragraph is part of the section content
else if (top[1].tag == (int)ScrSection.ScrSectionTags.kflidContent &&
newStyle.Structure == StructureValues.Heading)
{
// Check selected paragraphs for chapter or verse numbers - style will not be
// changed if any are found.
ScrSection section = new ScrSection(m_cache, tracker.GetSectionHvo(selHelper,
SelectionHelper.SelLimitType.Top));
for (int i = top[0].ihvo; i <= bottom[0].ihvo; i++)
{
ScrTxtPara para =
new ScrTxtPara(m_cache, section.ContentOA.ParagraphsOS.HvoArray[i]);
if (para.HasChapterOrVerseNumbers())
{
// Cancel the request if chapter or verse numbers are present.
// display message box if not running in a test
if (!InTestMode)
{
MessageBox.Show(Control,
TeResourceHelper.GetResourceString("kstidParaHasNumbers"),
TeResourceHelper.GetResourceString("kstidApplicationName"),
MessageBoxButtons.OK);
}
return false;
}
}
int iBook = tracker.GetBookIndex(selHelper, SelectionHelper.SelLimitType.Top);
int iSection = tracker.GetSectionIndexInBook(selHelper, SelectionHelper.SelLimitType.Top);
int iPara;
ScrBook book = section.OwningBook;
// End of book is end of context type
bool lastSectionInContext = (iSection == book.SectionsOS.Count - 1);
// for an interior section, need to check context of next section
if (!lastSectionInContext)
{
IScrSection nextSection = book.SectionsOS[iSection + 1];
lastSectionInContext = !SectionsHaveSameContext(section, nextSection);
}
if (AreAllParagraphsSelected(top, bottom, section.ContentOA))
{
if (!lastSectionInContext)
{
// Need to combine this section with the following section.
// Heading of combined section will be section1.Heading +
// section1.Content + section2.Heading
iPara = section.HeadingOA.ParagraphsOS.Count;
IScrSection nextSection = book.SectionsOS[iSection + 1];
StText.MoveTextContents(section.ContentOA, nextSection.HeadingOA, false);
StText.MoveTextContents(section.HeadingOA, nextSection.HeadingOA, false);
nextSection.AdjustReferences();
book.SectionsOS.RemoveAt(iSection);
}
else
{
// Just need to move all content paragraphs to the heading. The move
// method will create a new empty content paragraph.
iPara = section.HeadingOA.ParagraphsOS.Count;
section.MoveContentParasToHeading(section.ContentOA.ParagraphsOS.Count - 1);
}
}
else if (top[0].ihvo == 0)
{
// Move the first content paragraphs to become the last para of the
// section head
section.MoveContentParasToHeading(bottom[0].ihvo);
iPara = section.HeadingOA.ParagraphsOS.Count -
(bottom[0].ihvo - top[0].ihvo + 1);
}
else if (bottom[0].ihvo == section.ContentOA.ParagraphsOS.Count - 1 &&
!lastSectionInContext)
{
// Move the last content paragraphs to become the first para of the next
// section in the book.
ScrSection.MoveContentParasToNextSectionHeading(m_cache, book, iSection,
top[0].ihvo);
// update insertion point to first paragraph(s) of next section head
iSection++;
iPara = 0;
}
else
{
// In this case, we want the selected paragraph to become the heading
// of a new section, and the following paragraph(s) to become the
// content of the new section object.
section.ChangeParagraphToSectionHead(top[0].ihvo,
bottom[0].ihvo - top[0].ihvo + 1);
// update insertion point to first paragraph(s) of next section head
iSection++;
iPara = 0;
}
// Select all paragraphs in content that were part of section heading (and have
// now been moved to iSection, iPara)
SetInsertionPoint((int)ScrSection.ScrSectionTags.kflidHeading, iBook,
iSection, iPara);
// Get bottom point of selection and update it to point to beginning of
// last paragraph of old heading. Use offsets of current selection.
SelectionHelper newHelper =
SelectionHelper.Create(Callbacks.EditedRootBox.Site);
SelLevInfo[] levInfo = newHelper.GetLevelInfo(SelectionHelper.SelLimitType.End);
levInfo[0].ihvo += bottom[0].ihvo - top[0].ihvo;
newHelper.SetLevelInfo(SelectionHelper.SelLimitType.End, levInfo);
newHelper.IchAnchor = selHelper.GetIch(SelectionHelper.SelLimitType.Top);
newHelper.IchEnd = selHelper.GetIch(SelectionHelper.SelLimitType.Bottom);
newHelper.SetSelection(true);
}
return true;
}
