Basic experimental support for mypy static suggestion engine (#36)

I also bump version and include some recent changes in changelog.

Author: ilevkivskyi

Diff for: build.gradle

@@ -2,6 +2,8 @@ plugins {
     id 'org.jetbrains.intellij' version '0.4.8'
 }
 
+sourceCompatibility = 1.8
+
 repositories {
     mavenCentral()
 }
@@ -11,9 +13,6 @@ sourceSets {
         java.srcDir 'src'
         resources.srcDir 'resources'
     }
-    test {
-        java.srcDir 'test'
-    }
 }
 
 intellij {
@@ -24,6 +23,7 @@ intellij {
     plugins = ['PythonCore:2019.1.191.7479.7']
     updateSinceUntilBuild false
     downloadSources true
+    buildSearchableOptions.enabled = false
 }
 
 dependencies {

Diff for: resources/META-INF/plugin.xml

@@ -1,7 +1,7 @@
 <idea-plugin>
   <id>com.dropbox.plugins.mypy_plugin</id>
   <name>Dropbox mypy plugin</name>
-  <version>0.2.0</version>
+  <version>0.3.0</version>
   <vendor url="https://github.com/dropbox/mypy-PyCharm-plugin">Dropbox Mypy Team</vendor>
 
   <description><![CDATA[
@@ -11,6 +11,8 @@
 
   <change-notes><![CDATA[
       <ul>
+        <li>Version 0.3.0 (October 2019) — Minor bug fixes. Support reading configuration from mypy.ini.
+        Experimental support of dmypy suggest. Convert plugin to Gradle.
         <li>Version 0.2.0 (November 2018) — Track error locations after editing.
         Avoid NullPointerException on empty output. Show output if there are only notes.
         Show notification in editor when type checking completed while plugin window is closed.
@@ -66,5 +68,10 @@
       <keyboard-shortcut keymap="Mac OS X" first-keystroke="shift ctrl ENTER"/>
       <keyboard-shortcut keymap="Mac OS X 10.5+" first-keystroke="shift ctrl ENTER"/>
     </action>
+    <action id="Function Signature Suggestion" class="com.dropbox.plugins.mypy_plugin.actions.AskSuggestion" text="Suggest Signature For Function">
+      <keyboard-shortcut keymap="$default" first-keystroke="shift ctrl Y"/>
+      <keyboard-shortcut keymap="Mac OS X" first-keystroke="shift ctrl Y"/>
+      <keyboard-shortcut keymap="Mac OS X 10.5+" first-keystroke="shift ctrl Y"/>
+    </action>
   </actions>
 </idea-plugin>

Diff for: src/com/dropbox/plugins/mypy_plugin/MypyRunner.java

@@ -6,6 +6,7 @@
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.Messages;
+import com.intellij.openapi.vfs.VirtualFile;
 import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
@@ -27,7 +28,7 @@ public final class MypyRunner {
     }
 
     @Nullable
-    MypyResult runMypyDaemon() {
+    MypyResult runMypyDaemon(@Nullable String command, @Nullable VirtualFile vf) {
         Process process;
         String directory = project.getBaseDir().getPath();
         MypyConfig config = MypyConfigLoader.findMypyConfig(project);
@@ -41,7 +42,13 @@ MypyResult runMypyDaemon() {
         if (!extraPath.equals("")) {
             envProcess.put("PATH", envProcess.get("PATH") + File.pathSeparator + extraPath);
         }
-        String mypyCommand = config.getExecutableName();
+        String mypyCommand;
+        if (command != null) {
+            mypyCommand = command;
+        }
+        else {
+            mypyCommand = config.getExecutableName();
+        }
         processBuilder.command("/bin/bash", "-c", mypyCommand);
         processBuilder.redirectErrorStream(true);
         processBuilder.redirectInput(new File("/dev/null"));
@@ -88,6 +95,9 @@ MypyResult runMypyDaemon() {
                 }
             }
             process.waitFor();
+            if (vf != null) {
+                vf.refresh(false, false);
+            }
         } catch (IOException | InterruptedException e) {
             ApplicationManager.getApplication().invokeLater(() -> Messages.showMessageDialog(project, e.getMessage(),
                     "Plugin Exception:", Messages.getErrorIcon()));

Diff for: src/com/dropbox/plugins/mypy_plugin/MypyTerminal.java

@@ -28,6 +28,7 @@
 import com.intellij.ui.content.Content;
 import com.intellij.ui.content.ContentFactory;
 import icons.MypyIcons;
+import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 import java.awt.*;
@@ -272,14 +273,18 @@ public void mouseClicked(MouseEvent e) {
     }
 
     public void runMypyDaemonUIWrapper() {
+        runMypyDaemonUIWrapper(null, null);
+    }
+
+    public void runMypyDaemonUIWrapper(@Nullable String command, @Nullable VirtualFile vf) {
 
         setWaiting();
         FileDocumentManager.getInstance().saveAllDocuments();
         // Invoke mypy daemon runner script in a sub-thread,
         // it looks like UI is blocked on it otherwise.
         Executors.newSingleThreadExecutor().execute(() -> {
             Thread.currentThread().setName("MypyRunnerThread");
-            MypyResult result = MypyTerminal.this.runner.runMypyDaemon();
+            MypyResult result = MypyTerminal.this.runner.runMypyDaemon(command, vf);
             if (result == null) return;
             // Access UI is prohibited from non-dispatch thread.
             ApplicationManager.getApplication().invokeLater(() -> {

Diff for: src/com/dropbox/plugins/mypy_plugin/actions/AskSuggestion.java

@@ -0,0 +1,52 @@
+package com.dropbox.plugins.mypy_plugin.actions;
+
+import com.dropbox.plugins.mypy_plugin.MypyTerminal;
+import com.dropbox.plugins.mypy_plugin.MypyToolWindowFactory;
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.actionSystem.PlatformDataKeys;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.LogicalPosition;
+import com.intellij.openapi.fileEditor.FileDocumentManager;
+import com.intellij.openapi.project.DumbAware;
+import com.intellij.openapi.project.Project;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.openapi.wm.ToolWindow;
+import com.intellij.openapi.wm.ToolWindowManager;
+import org.jetbrains.annotations.NotNull;
+
+
+final class AskSuggestion extends AnAction implements DumbAware {
+    @Override
+    public void actionPerformed(@NotNull AnActionEvent e) {
+        Editor editor = e.getData(PlatformDataKeys.EDITOR);
+        if (editor == null)
+            return;
+        LogicalPosition pos = editor.getCaretModel().getPrimaryCaret().getLogicalPosition();
+        int line = pos.line;
+        FileDocumentManager.getInstance().saveAllDocuments();
+        VirtualFile vf = e.getData(PlatformDataKeys.VIRTUAL_FILE);
+        if (vf == null)
+            return;
+        String command = "./mypy/mypy-suggest " + vf.getPath() + " " + String.valueOf(line + 1);
+
+        Project project = e.getData(PlatformDataKeys.PROJECT);
+        if (project == null) {
+            return;
+        }
+        ToolWindow tw = ToolWindowManager.getInstance(project).getToolWindow(
+                MypyToolWindowFactory.MYPY_PLUGIN_ID);
+        if (!tw.isVisible()) {
+            tw.show(null);
+        }
+        MypyTerminal terminal = MypyToolWindowFactory.getMypyTerminal(project);
+        if (terminal == null) {
+            return;
+        }
+        if (terminal.getRunner().isRunning()) {
+            return;
+        }
+        terminal.runMypyDaemonUIWrapper(command, vf);
+        vf.refresh(false, false);
+    }
+}