/**
* Changes current layout to another one. New layout is provided with special actions
* substitutions. E.g. for secondary layout special action LAYOUT_BACK_TO_PRIMARY is substituted
* to the particular primary layout. All layouts (primary and secondary) are provided with next
* and prev primary layouts.
*/
public void changeLayout(String name) {
mCurrentLayout = bank.get(name);
if (mCurrentLayout.type == TYPE_PRIMARY) {
mCurrentPrimaryLayout = mCurrentLayout;
} else {
mCurrentLayout.registerLayoutActionKey(
LAYOUT_BACK_TO_PRIMARY, backToPrimaryKeys.get(mCurrentPrimaryLayout.name));
}
// if there is not any "prev" or "next" layouts, set them to null and return.
if (primaryLayouts.size() < 2) {
mCurrentLayout.registerLayoutActionKey(LAYOUT_PREV_PRIMARY, null);
mCurrentLayout.registerLayoutActionKey(LAYOUT_NEXT_PRIMARY, null);
return;
}
// current primary layout's index
int i = primaryLayouts.indexOf(mCurrentPrimaryLayout);
// find and pass next primary layout name
int next_i = (i == primaryLayouts.size() - 1) ? 0 : (i + 1);
mCurrentLayout.registerLayoutActionKey(
LAYOUT_NEXT_PRIMARY, primaryLayoutKeys.get(primaryLayouts.get(next_i).name));
// don't display previous primary layout button if it is equal to next primary layout
if (primaryLayouts.size() == 2) {
mCurrentLayout.registerLayoutActionKey(LAYOUT_PREV_PRIMARY, null);
return;
}
// find and pass prev primary layout name
int prev_i = (i == 0) ? (primaryLayouts.size() - 1) : (i - 1);
mCurrentLayout.registerLayoutActionKey(
LAYOUT_PREV_PRIMARY, primaryLayoutKeys.get(primaryLayouts.get(prev_i).name));
}
public LayoutSwitcher() {
// TODO: load layouts automatically using reflection
// TODO: load primary layouts from settings.
// TODO: if no primary layouts are selected in settings explicitely, select it by locale
Layout tmp;
tmp = new LayoutEn();
bank.put(tmp.name, tmp);
defaultLayout = tmp;
tmp = new LayoutRu();
bank.put(tmp.name, tmp);
tmp = new LayoutNum();
bank.put(tmp.name, tmp);
tmp = new LayoutDiacritic();
bank.put(tmp.name, tmp);
// Preparing layouts to be able to switch between each other
for (Layout l : bank.values()) {
if (l.type == TYPE_PRIMARY) {
backToPrimaryKeys.put(l.name, new Key(Action.createLayoutAction(l.name), l.labelSecondary));
primaryLayoutKeys.put(l.name, new Key(Action.createLayoutAction(l.name), l.labelPrimary));
primaryLayouts.add(l);
}
for (Layout l2 : bank.values()) {
if (!l2.name.equals(l.name))
l.registerLayoutActionKey(
l2.name, new Key(Action.createLayoutAction(l2.name), l2.labelPrimary));
}
}
changeLayout(defaultLayout.name);
}