addet qfc not as a submodule

.qfc/qfc/ui.py

@@ -0,0 +1,60 @@
+from . import ansi
+import os
+import math
+
+def _get_terminal_columns():
+    ''' get the number of terminal columns, used to determine spanned lines of a mark(reqansired for cursor placement) '''
+    _, columns = os.popen('stty size', 'r').read().split()
+    return int(columns)
+
+def erase():
+    ''' the commandline cursor is always at the first line (user prompt)
+    Therefore, erasing the current and following lines clear all  output
+    '''
+    ansi.move_cursor_line_beggining()
+    ansi.erase_from_cursor_to_end()
+
+def refresh(state):
+    ''' Redraw the output, this function will be triggered on every user interaction(key pressed)'''
+    erase()
+    lines, num_rows = _construct_output(state)
+    for line in lines:
+        print(line)
+    # go up
+    ansi.move_cursor_previous_lines(num_rows)
+    # palce the cursor at the end of first line)
+    ansi.move_cursor_horizental(len(lines[0])+1)
+    ansi.flush()
+
+def _construct_output(state):
+    columns = _get_terminal_columns()
+    def number_of_rows(line):
+        return int(math.ceil(float(len(line))/columns))
+    displayed_lines = []
+    # Number of terminal rows spanned by the output, used to determine how many lines we need to go up(to place the cursor after the prompt) after displaying the output
+    num_rows = 0
+    prompt_line = 'Path: ' + state.input
+    displayed_lines.append(prompt_line)
+    num_rows += number_of_rows(prompt_line)
+    matches = state.get_matches()
+    if matches:
+        # display commands from Max(0,selected_command_index - 10 +1 ) to Max(10,SelectedCommandIndex + 1)
+        selected_command_index = matches.index(state.get_selected_match())
+        matches_to_display = matches[max(0, selected_command_index - 10 + 1):max(10, selected_command_index + 1)]
+        for index, m in enumerate(matches_to_display):
+            fm = ' ' + m
+            num_rows += number_of_rows(fm)
+            # Formatting text(make searched word bold)
+            for w in state.input.split(' '):
+                if w:
+                    fm = fm.replace(w, ansi.bold_text(w))
+            # highlighting selected command
+            if m == state.get_selected_match():
+                fm = ansi.select_text(fm)
+            displayed_lines.append(fm)
+    else:
+        not_found_line = 'Nothing found'
+        displayed_lines.append(not_found_line)
+        num_rows += number_of_rows(not_found_line)
+    return displayed_lines, num_rows
+