/*
	Fixing paragraph style combinations
	Version: 1.1
	
    Script by Thomas Silkjær
	http://indesigning.net/
*/

var the_document = app.documents.item(0);

// Create a list of paragraph styles
var list_of_paragraph_styles = the_document.paragraphStyles.everyItem().name;

// Make the dialog box for selecting the paragraph styles
var the_dialog = app.dialogs.add({name:"Fix paragraph style pairs"});
with(the_dialog.dialogColumns.add()){
	with(dialogRows.add()){
		staticTexts.add({staticLabel:"Find:"});
	}
	with(borderPanels.add()){
		var find_first_paragraph = dropdowns.add({stringList:list_of_paragraph_styles, selectedIndex:0});
		staticTexts.add({staticLabel:"followed by"});
		var find_second_paragraph = dropdowns.add({stringList:list_of_paragraph_styles, selectedIndex:0});
	}
	with(dialogRows.add()){
		staticTexts.add({staticLabel:"Change:"});
	}
	with(borderPanels.add()){
		var change_first_paragraph = dropdowns.add({stringList:list_of_paragraph_styles, selectedIndex:0});
		staticTexts.add({staticLabel:"followed by"});
		var change_second_paragraph = dropdowns.add({stringList:list_of_paragraph_styles, selectedIndex:0});
	}
}
the_dialog.show();

// Define paragraph styles
var find_first_paragraph = the_document.paragraphStyles.item(find_first_paragraph.selectedIndex);
var find_second_paragraph = the_document.paragraphStyles.item(find_second_paragraph.selectedIndex);
var change_first_paragraph = the_document.paragraphStyles.item(change_first_paragraph.selectedIndex);
var change_second_paragraph = the_document.paragraphStyles.item(change_second_paragraph.selectedIndex);

// Set find grep preferences to find all paragraphs with the first selected paragraph style
app.findChangeGrepOptions.includeFootnotes = false;
app.findChangeGrepOptions.includeHiddenLayers = false;
app.findChangeGrepOptions.includeLockedLayersForFind = false;
app.findChangeGrepOptions.includeLockedStoriesForFind = false;
app.findChangeGrepOptions.includeMasterPages = false;

app.findGrepPreferences = NothingEnum.nothing;
app.findGrepPreferences.appliedParagraphStyle = find_first_paragraph;
app.findGrepPreferences.findWhat = "^";

//Search the current story
var the_story = app.selection[0].parentStory;
var found_paragraphs = the_story.findGrep();

var change_first_list = [];
var change_second_list = [];

// Loop through the paragraphs and create a list of words and mark them as index words
myCounter = 0;
do {
	try {
		// Create an object reference to the found paragraph and the next
		var first_paragraph = found_paragraphs[myCounter].paragraphs.firstItem();
		var next_paragraph = first_paragraph.paragraphs[-1].insertionPoints[-1].paragraphs[0];
	
		// Check if the next paragraph is equal to the find_second_paragraph
		if(next_paragraph.appliedParagraphStyle == find_second_paragraph) {
				change_first_list.push(first_paragraph);
				change_second_list.push(next_paragraph);
		}
	} catch(err) {}
	myCounter++;
} while (myCounter < found_paragraphs.length); 
	
// Apply paragraph styles
myCounter = 0;
do {
	change_first_list[myCounter].appliedParagraphStyle = change_first_paragraph;
	change_second_list[myCounter].appliedParagraphStyle = change_second_paragraph;
	myCounter++;
} while (myCounter < change_first_list.length); 

alert("Done fixing pairs!");