prediction switch (#12)

.github/workflows/ci.yml

@@ -47,5 +47,6 @@ jobs:
         working-directory: build/bin
         run: |
           sed -i '48a \    - predictor' luna_pinyin.schema.yaml
+          sed -i '37a \  - name: prediction\n    states: [ 关闭预测, 开启预测 ]\n    reset: 1' luna_pinyin.schema.yaml
           echo -e 'qi \n ' | ./rime_api_console | tee log
           grep 'commit: 一' log

README.md

@@ -5,6 +5,13 @@ librime plugin. predict next word.
 * Put the db file (by default `predict.db`) in rime user directory.
 * In `*.schema.yaml`, add `predictor` to the list of `engine/processors` before `key_binder`,
 or patch the schema with: `engine/processors/@before 0: predictor`
+* Add the `prediction` switch:
+```yaml
+switches:
+  - name: prediction
+    states: [ 关闭预测, 开启预测 ]
+    reset: 1
+```
 * Config items for your predictor:
 ```yaml
 predictor:

src/predictor.cc

@@ -56,7 +56,8 @@ void Predictor::OnSelect(Context* ctx) {
 }
 
 void Predictor::OnContextUpdate(Context* ctx) {
-  if (!db_ || !ctx || !ctx->composition().empty())
+  if (!db_ || !ctx || !ctx->composition().empty() ||
+      !ctx->get_option("prediction"))
     return;
   if (last_action_ == kDelete) {
     return;