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package juloo.keyboard2;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
class ExtraKeys
{
List<ExtraKey> _ks;
public ExtraKeys()
{
_ks = new ArrayList<ExtraKey>();
}
public void parse_and_add_keys_for_script(String script, String extra_keys_str)
{
_ks.addAll(parse_extra_keys(script, extra_keys_str));
}
/** Add the keys that should be added to the keyboard into [dst]. */
public void compute(Set<KeyValue> dst, Query q)
{
for (ExtraKey k : _ks)
{
if (k.should_add(q))
dst.add(k.kv);
}
}
public static List<ExtraKey> parse_extra_keys(String script, String str)
{
List<ExtraKey> dst = new ArrayList<ExtraKey>();
String[] ks = str.split("\\|");
for (int i = 0; i < ks.length; i++)
dst.add(ExtraKey.parse(ks[i], script));
return dst;
}
final static class ExtraKey
{
/** The key to add. */
final KeyValue kv;
/** The key will be added to layouts of the same script. If null, might be
added to layouts of any script. */
final String script;
/** The key will not be added to layout that already contain all the
alternatives. */
final List<KeyValue> alternatives;
ExtraKey(KeyValue kv_, String script_, List<KeyValue> alts_)
{
kv = kv_;
script = script_;
alternatives = alts_;
}
/** Whether the key should be added to the keyboard. */
public boolean should_add(Query q)
{
return
(q.script == null || script == null || q.script.equals(script))
&& (alternatives.size() == 0 || !q.present.containsAll(alternatives));
}
/** Extra keys are of the form "key name" or "key name:alt 1:alt 2". */
public static ExtraKey parse(String str, String script)
{
String[] strs = str.split(":");
KeyValue kv = KeyValue.getKeyByName(strs[0]);
KeyValue[] alts = new KeyValue[strs.length-1];
for (int i = 1; i < strs.length; i++)
alts[i-1] = KeyValue.getKeyByName(strs[i]);
return new ExtraKey(kv, script, Arrays.asList(alts));
}
}
public final static class Query
{
/** Script of the current layout. Might be null. */
final String script;
/** Keys present on the layout. */
final Set<KeyValue> present;
public Query(String script_, Set<KeyValue> present_)
{
script = script_;
present = present_;
}
}
}
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