forked from facelessuser/BracketHighlighter
/
bh_popup.py
319 lines (271 loc) · 10.7 KB
/
bh_popup.py
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"""
BracketHighlighter.
Copyright (c) 2013 - 2016 Isaac Muse <isaacmuse@gmail.com>
License: MIT
Handles popups.
"""
import sublime
import re
import textwrap
import traceback
from .bh_logging import log
HOVER_SUPPORT = int(sublime.version()) >= 3124
WRAPPER_CLASS = "bracket-highlighter"
CSS = '''
{%- if var.mdpopups_version >= (2, 0, 0) %}
div.bracket-highlighter { padding: 0.5rem; margin: 0; }
{%- else %}
div.bracket-highlighter { padding: 0; margin: 0; }
{%- endif %}
'''
MATCH_ERR = '''
\x02{%%- if plugin.mdpopups_version >= (2, 0, 0) %%}\x03
!!! panel-error "Matching bracket could not be found!"
- There *might* be no match.
- Brackets *might* be nested poorly --> `([)(])`
- Matching bracket *might* be beyond the search threshold.
A match done without the threshold *might* find it.
[(Match brackets without threshold)](%(pt)s)
\x02{%%- else %%}\x03
### Matching bracket could not be found! {: .error}
- There *might* be no match.
- Brackets *might* be nested poorly --> `([)(])`
- Matching bracket *might* be beyond the search threshold.
A match done without the threshold *might* find it.
[(Match brackets without threshold)](%(pt)s)
\x02{%%- endif %%}\x03
'''
template_options = {
"block_start_string": "\x02{%",
"block_end_string": "%}\x03",
"variable_start_string": "\x02{{",
"variable_end_string": "}}\x03",
"comment_start_string": "\x02{#",
"comment_end_string": "#}\x03"
}
if HOVER_SUPPORT:
import mdpopups
class BhOffscreenPopup(object):
"""Handle offscreen popups."""
popup_view = None
def on_navigate(self, href):
"""Navigate to code position."""
if HOVER_SUPPORT:
try:
pt = int(href)
self.popup_view.sel().clear()
self.popup_view.sel().add(sublime.Region(pt))
self.popup_view.show(pt)
mdpopups.hide_popup(self.popup_view)
except Exception:
log("Problem handling popup event:\n%s" % str(traceback.format_exc()))
def on_navigate_unmatched(self, href):
"""Handle unmatched click."""
if HOVER_SUPPORT:
pt = int(href)
mdpopups.hide_popup(self.popup_view)
self.popup_view.run_command("bh_offscreen_popup", {"point": pt, "no_threshold": True})
def show_unmatched_popup(self, view, point):
"""Show unmatched popup."""
if HOVER_SUPPORT:
self.popup_view = view
mdpopups.show_popup(
view,
textwrap.dedent(MATCH_ERR % {"pt": str(point)}),
wrapper_class=WRAPPER_CLASS,
flags=sublime.HIDE_ON_MOUSE_MOVE_AWAY,
css=CSS,
max_width=800,
max_height=800,
location=point,
on_navigate=self.on_navigate_unmatched,
template_vars={'mdpopups_version': mdpopups.version()},
template_env_options=template_options
)
def is_bracket_visible(self, view, region):
"""
Check if bracket is visible.
Check if first point of bracket is visible or last point is visible.
In short, is any part visible?
```
(xa,ya)--------------------(xb,ya)
| |
| |
| (pxa,pya){(pxb,pyb) |
| |
| |
(xa,yb)------------------------
```
"""
# Always report that bracket is not visible if we always want to show the popup
if sublime.load_settings("bh_core.sublime-settings").get('show_bracket_popup_always', False):
return False
xa, ya = view.viewport_position()
w, h = view.viewport_extent()
xb, yb = xa + w, ya + h
pxa, pya = view.text_to_layout(region[0])
pxb, pyb = view.text_to_layout(region[1])
return (xa <= pxa < xb and ya <= pya < yb) or (xa <= pxb < xb and ya <= pyb < yb)
def get_context_line(self, view, row, col_start, col_end, tab_size):
"""Get line context."""
line = view.line(view.text_point(row, 0))
c0 = view.rowcol(line.begin())[1]
c1 = view.rowcol(line.end())[1]
if c0 < col_start:
c0 = col_start
if c0 > c1:
c0 = c1
diff = c1 - c0
if diff > 120:
c1 -= diff - 120
return self.escape_code(
view.substr(
sublime.Region(
view.text_point(row, c0),
view.text_point(row, c1)
)
),
tab_size
)
def get_multiline_context(self, view, code, row, col_start, col_end, tab_size, line_context):
"""Get multi-line context for vertical offscreen brackets."""
last_row = view.rowcol(view.size())[0]
lines = [code]
offset = 1
while offset <= line_context:
current_row = row - offset
if current_row >= 0:
lines.insert(0, self.get_context_line(view, current_row, col_start, col_end, tab_size))
else:
break
offset += 1
last_offset = offset
offset = 1
while offset <= line_context or (len(lines) != (line_context * 2) + 1):
current_row = row + offset
if current_row <= last_row:
lines.append(self.get_context_line(view, current_row, col_start, col_end, tab_size))
else:
break
offset += 1
offset = last_offset
while len(lines) < ((line_context * 2) + 1):
current_row = row - offset
if current_row >= 0:
lines.insert(0, self.get_context_line(view, current_row, col_start, col_end, tab_size))
else:
break
offset += 1
return textwrap.dedent('\n'.join(lines)).replace('\n', '<br>')
def escape_code(self, text, tab_size):
"""Format text to HTML."""
encode_table = {
'&': '&',
'>': '>',
'<': '<',
'\t': ' ' * tab_size,
'\n': '',
' ': ' '
}
return ''.join(
encode_table.get(c, c) for c in text
)
def show_popup_between(self, view, point, region, region2, icon):
"""Show popup between."""
if HOVER_SUPPORT:
markup = ''
if not self.is_bracket_visible(view, region):
markup += self.get_markup(view, point, region, icon)
if not self.is_bracket_visible(view, region2):
markup += '\n\n'
markup += self.get_markup(view, point, region2, icon)
if markup:
self.popup_view = view
mdpopups.show_popup(
view,
markup,
wrapper_class=WRAPPER_CLASS,
css=CSS,
flags=sublime.HIDE_ON_MOUSE_MOVE_AWAY,
max_width=800,
location=point,
on_navigate=self.on_navigate,
template_vars={'mdpopups_version': mdpopups.version()},
template_env_options=template_options
)
else:
self.show_unmatched_popup(view, point)
def get_markup(self, view, point, region, icon):
"""Get markup."""
settings = sublime.load_settings('bh_core.sublime-settings')
tab_size = view.settings().get('tab_size', 4)
# Get highlight colors
color = None
if icon is not None:
color = mdpopups.scope2style(view, icon[1]).get('color')
if color is None or bool(settings.get('use_custom_popup_bracket_emphasis', False)):
bracket_em = settings.get('popup_bracket_emphasis', '#ff0000')
if not bracket_em.startswith('#'):
bracket_em = mdpopups.scope2style(view, bracket_em).get('color')
else:
bracket_em = color
# Get positions of bracket extents on the line
row, col = view.rowcol(region[0])
col2 = view.rowcol(region[1])[1]
# Calculate how far before and after bracket we can/should grab for context
# Format and truncate (if necessary).
context = int(settings.get('popup_char_context', 120)) - (col2 - col) - 1
start = region[1] - context
col_start = col2 - context
overage = 0
line = view.line(region[0])
if start < line.begin():
overage = line.begin() - start
start = line.begin()
col_start = 0
end = region[1] + overage
col_end = col2 + overage
if end > line.end():
end = line.end()
col_end = view.rowcol(line.end())[1]
# Get line of code with bracket and emphasize the bracket
content = view.substr(sublime.Region(start, end))
if re.match(r'#([\da-fA-F]{3}){1,2}', bracket_em):
highlight_open = '<span class="brackethighlighter" style="color: %s;"><strong>' % bracket_em
else:
highlight_open = '<span class="brackethighlighter %s"><strong>' % bracket_em
content = (
self.escape_code(content[:col - col_start], tab_size) +
highlight_open +
self.escape_code(content[col - col_start: col2 - col_start], tab_size) +
'</strong></span>' +
self.escape_code(content[col2 - col_start:], tab_size)
)
# Get additional lines of context (if required) and format text
if row != view.rowcol(point)[0]:
line_context = int(int(settings.get('popup_line_context', 2)) / 2)
content = self.get_multiline_context(view, content, row, col_start, col_end, tab_size, line_context)
else:
content = content.strip()
# Put together the markup to show
markup = '<div class="highlight"><pre>%s</pre></div>\n' % content
markup += '\n' + '[(jump to bracket - line: %d)](%d)' % (row + 1, region[0])
return markup
def show_popup(self, view, point, region, icon):
"""Show the popup."""
if HOVER_SUPPORT:
if not self.is_bracket_visible(view, region):
markup = self.get_markup(view, point, region, icon)
self.popup_view = view
mdpopups.show_popup(
view,
markup,
wrapper_class=WRAPPER_CLASS,
css=CSS,
flags=sublime.HIDE_ON_MOUSE_MOVE_AWAY,
max_width=800,
location=point,
on_navigate=self.on_navigate,
template_vars={'mdpopups_version': mdpopups.version()},
template_env_options=template_options
)