From 3ad29ede3779f8a04e6dea0a1d027376dc8ebd76 Mon Sep 17 00:00:00 2001
From: Mathieu PATUREL <australie.p@gmail.com>
Date: Wed, 4 Jan 2017 10:26:58 +1100
Subject: [PATCH] hide/show preview on focus working

---
 MLPApi.py              | 17 ++++++++++-
 MarkdownLivePreview.py | 68 +++++++++++++++++++++++++++++++++++++++++-
 sample.md              |  2 --
 setting_names.py       |  1 +
 4 files changed, 84 insertions(+), 4 deletions(-)

diff --git a/MLPApi.py b/MLPApi.py
index d41d4f8..3937e3f 100644
--- a/MLPApi.py
+++ b/MLPApi.py
@@ -15,13 +15,28 @@ def get_preview_name(md_view):
 def create_preview(md_view):
     window = md_view.window()
     md_view_settings = md_view.settings()
+    md_view_settings.set(JUST_CREATED, True)
 
     preview = window.new_file()
+    preview.settings().set(IS_PREVIEW, True)
     preview.set_name(get_preview_name(md_view))
     preview.set_scratch(True)
-    preview.settings().set(IS_PREVIEW, True)
     window.run_command('new_pane') # move to new group
 
     md_view_settings.set(PREVIEW_ID, preview.id())
 
     return preview
+
+def hide_preview(md_view):
+    window = md_view.window()
+    if window is None:
+        return
+    mdvsettings = md_view.settings()
+    preview_id = mdvsettings.get(PREVIEW_ID)
+    mdvsettings.erase(PREVIEW_ID)
+    preview = get_view_from_id(window, preview_id)
+    if preview is None:
+        return print("MLPApi.py:35", '!!! preview is None', preview_id)
+    psettings = preview.settings()
+    psettings.set(IS_HIDDEN, True)
+    sublime.set_timeout(preview.close(), 250)
diff --git a/MarkdownLivePreview.py b/MarkdownLivePreview.py
index 9608424..b9eaee8 100644
--- a/MarkdownLivePreview.py
+++ b/MarkdownLivePreview.py
@@ -11,6 +11,10 @@ from .functions import *
 
 class MarkdownLivePreviewListener(sublime_plugin.EventListener):
 
+    def __init__(self, *args, **kwargs):
+        super(MarkdownLivePreviewListener, *args, **kwargs)
+        self.last_deactivated_view = None
+
     def on_load(self, view):
         if not is_markdown_view(view):
             return
@@ -25,7 +29,10 @@ class MarkdownLivePreviewListener(sublime_plugin.EventListener):
             return
 
         if not md_view_settings.get(PREVIEW_ID):
+            print('normal, create preview')
+            MarkdownLivePreviewListener.md_view = md_view
             create_preview(md_view)
+            MarkdownLivePreviewListener.has_preview = True
             window.focus_view(md_view)
 
     def on_pre_close(self, view):
@@ -46,7 +53,66 @@ class MarkdownLivePreviewListener(sublime_plugin.EventListener):
 
         if vsettings.get(PREVIEW_ENABLED) is True and id is not None:
             preview = get_view_from_id(window, id)
+            if preview is None:
+                print('preview is None', id)
             preview_settings = preview.settings()
             preview_settings.erase(IS_PREVIEW)
             preview_settings.erase(MD_VIEW_ID)
-            sublime.set_timeout_async(lambda: preview.close(), 250)
+            sublime.set_timeout(lambda: preview.close(), 250)
+
+    def on_deactivated(self, view):
+        self.last_deactivated_view = view
+        return
+        vsettings = view.settings()
+        if vsettings.get(IS_PREVIEW) is True:
+            return
+        if vsettings.get(PREVIEW_ENABLED):
+            id = vsettings.get(IS_PREVIEW)
+            if id is not None:
+                return
+            create_preview(view)
+
+
+    def on_activated(self, view):
+        vsettings = view.settings()
+        if vsettings.get(IS_PREVIEW) is True:
+            return
+        if vsettings.get(PREVIEW_ENABLED):
+            id = vsettings.get(PREVIEW_ID)
+            if vsettings.get(JUST_CREATED) is True:
+                vsettings.erase(JUST_CREATED)
+                print("MarkdownLivePreview.py:84", 'dont create, just created')
+                return
+            if id is not None:
+                print("MarkdownLivePreview.py:86", "dont create, already have a preview id")
+                return
+            print("MarkdownLivePreview.py:87", 'create preview')
+            return create_preview(view)
+
+        if self.last_deactivated_view:
+            hide_preview(self.last_deactivated_view)
+
+
+        return
+        def just_created_preview():
+            return MarkdownLivePreviewListener.just_created_preview
+        vsettings = view.settings()
+        if vsettings.get(PREVIEW_ENABLED) is True:
+            if vsettings.get(PREVIEW_ID) is not None:
+                print('return because already have a preview')
+                return
+
+           # 'view' is the markdown view, which wasn't focus, so didn't have
+           # any preview
+            MarkdownLivePreviewListener.md_view = view
+            MarkdownLivePreviewListener.has_preview = True
+            print('create preview')
+            MarkdownLivePreviewListener.just_created_preview = True
+            create_preview(view)
+        elif vsettings.get(IS_PREVIEW) is True or just_created_preview():
+            print('do nothing because focus view is the preview')
+            MarkdownLivePreviewListener.just_created_preview = False
+        elif MarkdownLivePreviewListener.has_preview:
+            print('hide preview', view.name().__repr__(), view.file_name())
+            hide_preview(MarkdownLivePreviewListener.md_view)
+            MarkdownLivePreviewListener.has_preview = False
diff --git a/sample.md b/sample.md
index 58c1a7e..ae89070 100644
--- a/sample.md
+++ b/sample.md
@@ -1,5 +1,3 @@
 # DuckDuckGo - The Search engine you'll fall in love with
 
 ![image](http://afterishtar.pl/images/100x100.gif)
-
-hello!
diff --git a/setting_names.py b/setting_names.py
index 1d1ad07..642ec52 100644
--- a/setting_names.py
+++ b/setting_names.py
@@ -5,3 +5,4 @@ PREVIEW_ID = 'markdown_live_preview_id'
 IS_PREVIEW = 'is_markdown_live_preview'
 IS_HIDDEN = 'is_hidden_markdown_live_preview'
 MD_VIEW_ID = 'markdown_live_preview_md_id'
+JUST_CREATED = 'markdown_live_preview_just_created'