public void separateIncomeAndExpense() {
CategoryTree<Category> newCategories = new CategoryTree<Category>();
Category income = new Category();
income.id = INCOME_CATEGORY_ID;
income.makeThisCategoryIncome();
income.title = "<INCOME>";
Category expense = new Category();
expense.id = EXPENSE_CATEGORY_ID;
expense.makeThisCategoryExpense();
expense.title = "<EXPENSE>";
for (Category category : categories) {
if (category.id <= 0) {
newCategories.add(category);
} else {
if (category.isIncome()) {
income.addChild(category);
} else {
expense.addChild(category);
}
}
}
if (income.hasChildren()) {
newCategories.add(income);
}
if (expense.hasChildren()) {
newCategories.add(expense);
}
categories = newCategories;
}
public void tagCategories(Category parent) {
if (categories.size() > 0 && categories.getAt(0).id != parent.id) {
Category copy = new Category();
copy.id = parent.id;
copy.title = parent.title;
if (parent.isIncome()) {
copy.makeThisCategoryIncome();
}
categories.insertAtTop(copy);
}
StringBuilder sb = new StringBuilder();
for (Category c : categories) {
if (c.tag == null && c.hasChildren()) {
sb.setLength(0);
CategoryTree<Category> children = c.children;
for (Category child : children) {
if (sb.length() > 0) {
sb.append(",");
}
sb.append(child.title);
}
c.tag = sb.toString();
}
}
}
public boolean navigateTo(long categoryId) {
Category selectedCategory = findCategory(categoryId);
if (selectedCategory != null) {
selectedCategoryId = selectedCategory.id;
if (selectedCategory.hasChildren()) {
categoriesStack.push(categories);
categories = selectedCategory.children;
tagCategories(selectedCategory);
return true;
}
}
return false;
}