Uses css to display linting messages on hover for #862

    * Created new files: templates/tooltops/error_warning.tpl and templates/tooltips/error_warning_helper.tpl
    * Created new Class TooltipHelper in anaconda_lib/tooltips.py
    * Created new function get_specific_lineo_msgs in anaconda_lib/linting/sublime.py
    * Modified css/popup.css to add linting message color codes.
    * Cleaned up listeners/linting.py, added css viewing using tooltips.py

anaconda_lib/linting/sublime.py

@@ -330,6 +330,35 @@ def get_lineno_msgs(view, lineno):
     return errors_msg
 
 
+def get_specific_lineno_msgs(view, lineno):
+    """Get lineno error messages and return them by message type
+    """
+
+    ERRORS = ANACONDA.get('ERRORS')
+    WARNINGS = ANACONDA.get('WARNINGS')
+    VIOLATIONS = ANACONDA.get('VIOLATIONS')
+
+    specific_errors_msg = {}
+
+    if lineno is not None:
+        def check_and_delete_if_empty(dct: dict, key: str):
+            if not dct.get(key):
+                del dct[key]
+
+        vid = view.id()
+        if vid in ERRORS:
+            specific_errors_msg['ERRORS'] = ERRORS[vid].get(lineno, [])
+            check_and_delete_if_empty(specific_errors_msg, 'ERRORS')
+        if vid in WARNINGS:
+            specific_errors_msg['WARNINGS'] = WARNINGS[vid].get(lineno, [])
+            check_and_delete_if_empty(specific_errors_msg, 'WARNINGS')
+        if vid in VIOLATIONS:
+            specific_errors_msg['VIOLATIONS'] = VIOLATIONS[vid].get(lineno, [])
+            check_and_delete_if_empty(specific_errors_msg, 'VIOLATIONS')
+
+    return specific_errors_msg
+
+
 def run_linter(view=None, hook=None):
     """Run the linter for the given view
     """

anaconda_lib/tooltips.py

@@ -114,3 +114,43 @@ def _load_css(self, css_file: str) -> str:
             self.themes[theme_name] = resource.read()
 
         return theme_name
+
+
+class TooltipHelper(Tooltip):
+    loaded = False
+    themes = {}  # type: Dict[str, bytes]
+    tooltips = {}  # type: Dict[str, str]
+
+    def __init__(self, theme: str) -> None:
+        self.theme = theme
+
+        if int(sublime.version()) < 3070:
+            return
+
+        if TooltipHelper.loaded is False:
+            self._load_css_themes()
+            self._load_tooltips()
+            Tooltip.loaded = True
+
+    def _load_tooltips(self) -> None:
+        """Load tooltips templates from anaconda tooltips templates
+        """
+
+        template_files_pattern = os.path.join(
+            os.path.dirname(__file__), os.pardir,
+            'templates', 'tooltips', '*.tpl')
+        for template_file in glob.glob(template_files_pattern):
+            with open(template_file, 'r', encoding='utf8') as tplfile:
+                tplname = os.path.basename(template_file).split('.tpl')[0]
+                self.tooltips[tplname] = Template(tplfile.read())
+
+    def generate_no_css(self, tooltip: str, content: Dict[str, str]) -> Union[Dict[str, str], None]:
+        try:
+            data = self.tooltips[tooltip].safe_substitute(content)
+            return data
+        except KeyError as err:
+            logging.error(
+                'while generating tooltip without css: tooltip {} don\'t exists'.format(
+                    str(err))
+            )
+            return None

css/popup.css

@@ -19,3 +19,15 @@ div.anaconda {
     font-weight: bold;
     font-size: 1.05em;
 }
+
+.anaconda .error_warning .errors {
+    color: red;
+}
+
+.anaconda .error_warning .warnings {
+    color: orange;
+}
+
+.anaconda .error_warning .violations {
+    color: blue;
+}

listeners/linting.py

@@ -7,6 +7,7 @@
 import sublime
 import sublime_plugin
 
+from ..anaconda_lib.tooltips import Tooltip, TooltipHelper
 from ..anaconda_lib._typing import Callable, Dict, Any
 from ..anaconda_lib.helpers import (
     check_linting, get_settings, check_linting_behaviour,
@@ -15,7 +16,7 @@
 from ..anaconda_lib.linting.sublime import (
     ANACONDA, erase_lint_marks, run_linter,
     last_selected_lineno, update_statusbar,
-    get_lineno_msgs
+    get_specific_lineno_msgs
 )
 
 
@@ -154,28 +155,29 @@ def _erase_marks(self, view: sublime.View) -> None:
 
         erase_lint_marks(view)
 
-    def on_hover(self, view: sublime.View, point: int, hover_zone: int):
-        # Planned to make my own listener class(sublime_plugin.ViewEventListener) for this function
-        # but couldn't figure out how to register them
-        # Tell me if I need to move this, or if it can piggyback under this listener
-
-        # from anaconda_lib.tooltips:show_tooltips
-        st_ver = int(sublime.version())
-        if st_ver < 3070:
-            return
-
-        if hover_zone == sublime.HOVER_TEXT:
-            if get_settings(view, 'anaconda_linter_hover_message', False):
-                rowcol = view.rowcol(point)
-                line = rowcol[0]  # tuple (lineno, col)
-                messages = get_lineno_msgs(view, line)
-
-                if messages:
-                    # Not sure how to properly choose the height & width values, but this works fine on my laptop
-                    # Also unsure as to how to format it so its pretty and colorful (Tooltip._generate ?)
-                    max_width = len(messages) * 840
-                    max_height = len(max(messages))
-                    message = "\n".join(messages)
-                    # Newline is not rendered   , errors all on one line :( help
-                    view.show_popup(message, location=point, max_width=max_width, max_height=max_height)
-                    # amount of time of popup?
+    def on_hover(self, view: sublime.View, point: int, hover_zone: int) -> None:
+        """Called when user hovers cursor above a line
+        """
+        if hover_zone == sublime.HOVER_TEXT and get_settings(view, 'anaconda_linter_hover_message', False):
+            rowcol = view.rowcol(point)
+            line = rowcol[0]  # tuple (lineno, col)
+            messages_with_type = get_specific_lineno_msgs(view, line)
+
+            if messages_with_type:
+                css = get_settings(view, 'anaconda_tooltip_theme', 'popup')
+                main_tooltip = Tooltip(css)
+                tooltip_helper = TooltipHelper(css)
+                helper_content = []
+
+                for key in messages_with_type.keys():
+                    for msg in messages_with_type.get(key):
+                        tooltip_data = {'level': key.lower(), 'messages': msg}
+                        helper_content.append(tooltip_helper.generate_no_css('error_warning_helper', tooltip_data))
+
+                def do_nothing():
+                    return
+
+                messages = "<br>".join(helper_content)
+                tooltip_name = 'error_warning'
+                main_content = {'helper_content': messages}
+                main_tooltip.show_tooltip(view, tooltip_name, main_content, do_nothing)

templates/tooltips/error_warning.tpl

@@ -0,0 +1,5 @@
+<div class="anaconda">
+    <div class="error_warning">
+        ${helper_content}
+    </div>
+</div>

templates/tooltips/error_warning_helper.tpl

@@ -0,0 +1 @@
+<pre class="${level}">${messages}</pre>