From 8c7288f64006b3c44b5c3c7dd1bc12d339d7c75f Mon Sep 17 00:00:00 2001
From: Mykola Mokhnach <mokhnach@gmail.com>
Date: Sun, 18 Feb 2024 12:44:22 +0100
Subject: [PATCH] fix: Perform click action when necessary (#240)

---
 lib/commands/gestures.js      | 16 +++++---
 lib/commands/winapi/user32.js | 74 ++++++++++++++++++++---------------
 2 files changed, 54 insertions(+), 36 deletions(-)

diff --git a/lib/commands/gestures.js b/lib/commands/gestures.js
index a210642..769a254 100644
--- a/lib/commands/gestures.js
+++ b/lib/commands/gestures.js
@@ -300,11 +300,13 @@ commands.windowsClick = async function windowsClick (opts) {
   const [absoluteX, absoluteY] = await toAbsoluteCoordinates.bind(this)(elementId, x, y);
   let clickDownInput;
   let clickUpInput;
+  let clickInput;
   let moveInput;
   try {
-    [clickDownInput, clickUpInput, moveInput] = await B.all([
+    [clickDownInput, clickUpInput, clickInput, moveInput] = await B.all([
       toMouseButtonInput({button, action: MOUSE_BUTTON_ACTION.DOWN}),
       toMouseButtonInput({button, action: MOUSE_BUTTON_ACTION.UP}),
+      toMouseButtonInput({button, action: MOUSE_BUTTON_ACTION.CLICK}),
       toMouseMoveInput({x: absoluteX, y: absoluteY}),
     ]);
   } catch (e) {
@@ -316,13 +318,17 @@ commands.windowsClick = async function windowsClick (opts) {
       await handleInputs(modifierKeyDownInputs);
     }
     await handleInputs(moveInput);
+    const hasDuration = _.isInteger(durationMs) && durationMs > 0;
+    const hasInterClickDelay = _.isInteger(interClickDelayMs) && interClickDelayMs > 0;
     for (let i = 0; i < times; ++i) {
-      await handleInputs(clickDownInput);
-      if (_.isInteger(durationMs) && durationMs > 0) {
+      if (hasDuration) {
+        await handleInputs(clickDownInput);
         await B.delay(durationMs);
+        await handleInputs(clickUpInput);
+      } else {
+        await handleInputs(clickInput);
       }
-      await handleInputs(clickUpInput);
-      if (_.isInteger(interClickDelayMs) && interClickDelayMs > 0) {
+      if (hasInterClickDelay) {
         await B.delay(interClickDelayMs);
       }
     }
diff --git a/lib/commands/winapi/user32.js b/lib/commands/winapi/user32.js
index 2a73a42..2f9a2ca 100644
--- a/lib/commands/winapi/user32.js
+++ b/lib/commands/winapi/user32.js
@@ -140,6 +140,8 @@ export const MOUSE_BUTTON = Object.freeze({
 export const MOUSE_BUTTON_ACTION = Object.freeze({
   UP: 'up',
   DOWN: 'down',
+  // This action is an intenal one
+  CLICK: 'click',
 });
 const MOUSEEVENTF_MOVE = 0x0001;
 const MOUSEEVENTF_LEFTDOWN = 0x0002;
@@ -230,8 +232,8 @@ function createMouseInput (params = {}) {
 
 /**
  * @typedef {Object} MouseButtonOptions
- * @property {'left' | 'middle' | 'right' | 'back' | 'forward'} button The desired button name to click
- * @property {'up' | 'down'} action The desired button action
+ * @property {typeof MOUSE_BUTTON[keyof typeof MOUSE_BUTTON]} button The desired button name to click
+ * @property {typeof MOUSE_BUTTON_ACTION[keyof typeof MOUSE_BUTTON_ACTION]} action The desired button action
  */
 
 /**
@@ -243,18 +245,6 @@ function createMouseInput (params = {}) {
  * @throws {Error} If the input data is invalid
  */
 export async function toMouseButtonInput({button, action}) {
-  let down = true;
-  switch (_.toLower(action)) {
-    case MOUSE_BUTTON_ACTION.UP:
-      down = false;
-      break;
-    case MOUSE_BUTTON_ACTION.DOWN:
-      break;
-    default:
-      throw createInvalidArgumentError(`Mouse button action '${action}' is unknown. ` +
-        `Only ${_.values(MOUSE_BUTTON_ACTION)} actions are supported`);
-  }
-
   // If the host is configured to swap left & right buttons, inject swapped
   // events to un-do that re-mapping.
   if (await isLeftMouseButtonSwapped()) {
@@ -264,34 +254,56 @@ export async function toMouseButtonInput({button, action}) {
       button = MOUSE_BUTTON.LEFT;
     }
   }
+
+  let evtDown;
+  let evtUp;
+  let mouseData;
   switch (_.toLower(button)) {
     case MOUSE_BUTTON.LEFT:
-      return createMouseInput({
-        dwFlags: down ? MOUSEEVENTF_LEFTDOWN : MOUSEEVENTF_LEFTUP,
-      });
+      [evtDown, evtUp] = [MOUSEEVENTF_LEFTDOWN, MOUSEEVENTF_LEFTUP];
+      break;
     case MOUSE_BUTTON.RIGHT:
-      return createMouseInput({
-        dwFlags: down ? MOUSEEVENTF_RIGHTDOWN : MOUSEEVENTF_RIGHTUP,
-      });
+      [evtDown, evtUp] = [MOUSEEVENTF_RIGHTDOWN, MOUSEEVENTF_RIGHTUP];
+      break;
     case MOUSE_BUTTON.MIDDLE:
-      return createMouseInput({
-        dwFlags: down ? MOUSEEVENTF_MIDDLEDOWN : MOUSEEVENTF_MIDDLEUP,
-      });
+      [evtDown, evtUp] = [MOUSEEVENTF_MIDDLEDOWN, MOUSEEVENTF_MIDDLEUP];
+      break;
     case MOUSE_BUTTON.BACK:
-      return createMouseInput({
-        dwFlags: down ? MOUSEEVENTF_XDOWN : MOUSEEVENTF_XUP,
-        mouseData: XBUTTON1,
-      });
+      [evtDown, evtUp] = [MOUSEEVENTF_XDOWN, MOUSEEVENTF_XUP];
+      mouseData = XBUTTON1;
+      break;
     case MOUSE_BUTTON.FORWARD:
-      return createMouseInput({
-        dwFlags: down ? MOUSEEVENTF_XDOWN : MOUSEEVENTF_XUP,
-        mouseData: XBUTTON2,
-      });
+      [evtDown, evtUp] = [MOUSEEVENTF_XDOWN, MOUSEEVENTF_XUP];
+      mouseData = XBUTTON2;
+      break;
     default:
       throw createInvalidArgumentError(
         `Mouse button '${button}' is unknown. Only ${_.values(MOUSE_BUTTON)} buttons are supported`
       );
   }
+
+  let dwFlags;
+  switch (_.toLower(action)) {
+    case MOUSE_BUTTON_ACTION.UP:
+      dwFlags = evtUp;
+      break;
+    case MOUSE_BUTTON_ACTION.DOWN:
+      dwFlags = evtDown;
+      break;
+    case MOUSE_BUTTON_ACTION.CLICK:
+      dwFlags = evtDown | evtUp;
+      break;
+    default:
+      throw createInvalidArgumentError(
+        `Mouse button action '${action}' is unknown. ` +
+        `Only ${[MOUSE_BUTTON_ACTION.UP, MOUSE_BUTTON_ACTION.DOWN]} actions are supported`
+      );
+  }
+
+  return createMouseInput({
+    dwFlags,
+    ...(_.isNil(mouseData) ? {} : {mouseData}),
+  });
 }
 
 function clamp (num, min, max) {