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layout_api.py
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layout_api.py
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import os.path
import sys
import cStringIO
import xml.etree.cElementTree as ET
import HTMLParser
import json
from collections import defaultdict
from jinja2 import Template
from jinja2 import FileSystemLoader
from jinja2.environment import Environment
from dummy_data_layout import LAYOUT_SCHEMA
from service_api import service_gateway_get
from config import PORTAL_ROOT, UI_MODE
from random import randint
DEFINED_VIEWS = [
'2163152', # Facepage
'2163153', # Status
'2163154', # Related
'2163156', # Dashboard
'2163157', # Command
'2163158', # Direct Command
]
class LayoutApi(object):
@staticmethod
def get_new_layout_schema():
layout_schema = service_gateway_get('directory', 'get_ui_specs', params={'user_id': 'tboteler'})
return layout_schema
# Brute force method to quickly experiment with different rendering strategies
# with CSS rules, etc. Optimizations/refactoring will be underway soon.
@staticmethod
def process_layout(layout_schema=None, interactions=None):
# Load template and find 'body' for template appendation
env = Environment()
env.loader = FileSystemLoader(PORTAL_ROOT+'/templates')
tmpl_unparsed = env.get_template('ion_ux.html').render()
tmpl = ET.fromstring(tmpl_unparsed.encode('utf-8'))
body_elmt = tmpl.find('body')
# Fetch the layout schema
layout_schema = LayoutApi.get_new_layout_schema()
# Track resource types, metadata and widgets without processed sub-attributes
resource_types = []
metadata_processed = []
exclude_sub_attributes = ['table_ooi', 'chart_ooi']
attribute_levels = ['level-zero', 'level-one', 'level-two', 'level-three', 'level-four', 'level-five', 'level-six']
# --------------------------------------------------------------------------
# VIEWS
# --------------------------------------------------------------------------
# Loop through defined views and build <script> templates with following heirarchy:
# view -> groups -> blocks -> attributes -> sub-attributes.
for view_id in DEFINED_VIEWS:
view = layout_schema['spec']['elements'][view_id]
script_elmt = _make_element(body_elmt, 'script', id=view_id, type='text/template')
# heading_elmt = _make_element(script_elmt, 'div', css='row-fluid heading')
v00_elmt = _make_element(script_elmt, 'div', css='v00 heading')
content_elmt = _make_element(script_elmt, 'div', css='row-fluid')
v01_elmt = _make_element(content_elmt, 'div', css='v01 span3')
v02_elmt = _make_element(content_elmt, 'div', css='v02 span9')
# --------------------------------------------------------------------------
# GROUPS
# --------------------------------------------------------------------------
# Track groups on per view basis
groups = {}
# Loop through groups
for gr_idx, gr_element in enumerate(view['embed']):
group_elid = gr_element['elid']
group_link_id = group_elid + str(randint(0,1000))
group_position = gr_element['pos']
group = layout_schema['spec']['elements'][group_elid]
# Set the parent element for the group
if group_position == 'V00':
parent_elmt = v00_elmt
elif group_position == 'V01':
parent_elmt = v01_elmt
else:
parent_elmt = v02_elmt
# LABEL OVERRIDES
if gr_element.has_key('olabel'):
print 'group label override:', group['label'], '->', gr_element['olabel'], group_elid
group_label = gr_element['olabel']
else:
group_label = group['label']
# CHECK FOR TITLE BAR (V00), creates tabs for V01 and V02 groups
if group_position == 'V00':
group_elmt = parent_elmt
else:
if not group_position in groups.keys():
group_container_elmt = _make_element(parent_elmt, 'div', id=group_elid, css='group')
group_ul_elmt = _make_element(group_container_elmt, 'ul', css='nav nav-tabs')
group_block_container_elmt = _make_element(group_container_elmt, 'div', css='tab-content')
groups.update({group_position: {'ul_elmt': group_ul_elmt,'group_container_elmt': group_container_elmt ,'group_block_container_elmt': group_block_container_elmt}})
else:
group_ul_elmt = groups[group_position]['ul_elmt']
group_block_container_elmt = groups[group_position]['group_block_container_elmt']
# <li>, <a> and group element
group_li_elmt = _make_element(group_ul_elmt, 'li', css='')
group_a_elmt = _make_element(group_li_elmt, 'a', href="#%s" % group_link_id, data_toggle='tab', content=group_label)
group_elmt = _make_element(group_block_container_elmt, 'div', id=group_link_id, css='tab-pane row-fluid')
# --------------------------------------------------------------------------
# BLOCKS
# --------------------------------------------------------------------------
# Loop through blocks
for bl_element in group['embed']:
block_elid = bl_element['elid']
block_position = bl_element['pos']
block = layout_schema['spec']['elements'][block_elid]
block_widget_id = block['wid']
block_widget = layout_schema['spec']['widgets'][block_widget_id]
block_widget_type = block_widget['name']
block_res_type = block['ie']['ie_name'] if block.has_key('ie') else ''
if not block_res_type in resource_types:
resource_types.append(block_res_type)
# Set li class based on block_res_type
if group_position != 'V00':
li_css_class = group_li_elmt.get('class')
if not block_res_type in li_css_class:
li_css_class += ' %s' % block_res_type
group_li_elmt.attrib['class'] = li_css_class
# LABEL OVERRIDES
if bl_element.has_key('olabel'):
print 'block label override:', block['label'], '->', bl_element['olabel'], block_elid
block_label = bl_element['olabel']
else:
block_label = block['label']
block_css_class = block_res_type
# if not block_res_type in block_css_class:
# block_css_class += ' %s' % block_res_type
# BLOCK LAYOUT
if block['embed']:
for at_element in block['embed']:
attribute = layout_schema['spec']['elements'][at_element['elid']]
attribute_widget_type = layout_schema['spec']['widgets'][attribute['wid']]['name']
wide_container = True if attribute_widget_type in ('table_ooi', 'chart_ooi') else False
if wide_container:
block_container = _make_element(group_elmt, 'div', css='row-fluid')
block_elmt = _make_element(block_container, 'div', style="display:none;", id=block_elid)
block_css_class += ' span12'
else:
block_elmt = _make_element(group_elmt, 'div', style="display:none;", id=block_elid)
block_css_class += ' block'
# Greater than V01
if group_position not in ('V00','V01'):
block_css_class += ' span3'
# CHECK FOR TITLE BAR (V00)
elif group_position == 'V00':
block_css_class += ' row-fluid'
block_elmt.attrib['class'] = block_css_class
# SET GROUP HEADINGS
if group_position != 'V00':
# Hide table headers for now.
if not attribute_widget_type == 'table_ooi':
block_h3_elmt = _make_element(block_elmt, 'h3', content=block_label)
if group_position == 'V00':
block_container_elmt = block_elmt
left_elmt = _make_element(block_container_elmt, 'div', css='span6 heading-left')
right_elmt = _make_element(block_container_elmt, 'div', css='span6 heading-right')
else:
block_container_elmt = _make_element(block_elmt, 'div')
# Attributes
for at_element in block['embed']:
attribute_elid = at_element['elid']
attribute_position = at_element['pos']
attribute_data_path = at_element['dpath']
attribute_level = at_element['olevel']
attribute_css = attribute_levels[int(attribute_level)] if attribute_level else ''
attribute = layout_schema['spec']['elements'][attribute_elid]
attribute_widget_id = attribute['wid']
attribute_widget_type = layout_schema['spec']['widgets'][attribute_widget_id]['name']
# LABEL OVERRIDES
if at_element.has_key('olabel'):
print 'attribute label override:', attribute['label'], '->', at_element['olabel'], attribute_elid
attribute_label = at_element['olabel']
else:
attribute_label = attribute['label']
if attribute_widget_type == 'image_ooi':
image_class = layout_schema['spec']['graphics'][attribute['gfx']]['name']
attribute_css += ' %s %s' % (attribute_widget_type, image_class)
else:
attribute_css += ' %s' % attribute_widget_type
# CHECK FOR TITLE BAR
if attribute_widget_type not in ('table_ooi', 'chart_ooi') and group_position != 'V00':
block_container_elmt.set('class', 'content-wrapper')
attribute_options = {
'id': attribute_elid,
'data-position': attribute_position,
'data-path': attribute_data_path,
'data-level': attribute_level,
'data-label': attribute_label,
'css': attribute_css
}
if group_position == 'V00':
if attribute_position == 'B01' or attribute_position == 'B02':
attribute_elmt = _make_element(left_elmt, 'div', **attribute_options)
else:
attribute_elmt = _make_element(right_elmt, 'div', **attribute_options)
else:
attribute_elmt = _make_element(block_container_elmt, 'div', **attribute_options)
# FOR INTEGRATION
# if UI_MODE == 'DEVELOPMENT':
# attribute_elmt.text = 'Attribute: %s (%s) (%s) (%s) (%s)' % (attribute['label'], attribute['name'], attribute_elid, attribute_widget_type, attribute_position)
# Generate metadata for nested elements, ex. tables and attribute groups
if attribute_widget_type in ('table_ooi', 'attribute_group_ooi') and attribute_elid not in metadata_processed:
metadata_processed.append(attribute_elid)
metadata = []
for embedded_attribute in attribute['embed']:
embedded_object = layout_schema['spec']['elements'][embedded_attribute['elid']]
embedded_widget_type = layout_schema['spec']['widgets'][embedded_attribute['wid']]['name']
# LABEL OVERRIDE
if embedded_attribute.has_key('olabel'):
print 'sub-attribute label override:', embedded_object['label'], '->', embedded_attribute['olabel'], attribute_elid
embedded_object_label = embedded_attribute['olabel']
else:
embedded_object_label = embedded_object['label']
embedded_info_level = embedded_attribute['olevel']
if embedded_info_level:
embedded_info_level_index = int(embedded_info_level)
metadata_items = [embedded_widget_type, embedded_object_label, embedded_attribute['dpath'], embedded_attribute['pos'], embedded_info_level, attribute_levels[embedded_info_level_index]]
if attribute_widget_type == 'attribute_group_ooi':
meta_elmt_id = 'ATTRIBUTE_GROUP_' + attribute_elid
metadata_items.append(embedded_attribute['elid'])
metadata_items.append(embedded_attribute['dpath'])
elif attribute_widget_type == 'table_ooi':
meta_elmt_id = 'TABLE_' + attribute_elid
metadata.append(metadata_items)
# Append metadata to body as a JSON script
meta_elmt = ET.SubElement(body_elmt, 'script')
meta_elmt.set('id', meta_elmt_id)
meta_elmt.text = "var %s=%s" % (meta_elmt_id, json.dumps(metadata))
layout_elmt = ET.SubElement(body_elmt, 'script')
layout_elmt.set('id', 'layout')
layout_elmt.text = "var LAYOUT=%s;" % json.dumps(layout_schema)
resource_types_elmt = ET.SubElement(body_elmt, 'script')
resource_types_elmt.set('id', 'resource_types')
resource_types_elmt.text = "var RESOURCE_TYPES=%s" % json.dumps(resource_types)
init_script_elmt = ET.Element('script')
init_script_elmt.set('type', 'text/javascript')
init_script_elmt.text = "$(function(){initialize_app();});"
body_elmt.append(init_script_elmt)
tmpl = ET.tostring(tmpl)
tmpl = '<!DOCTYPE html>\n' + tmpl
h = HTMLParser.HTMLParser()
return h.unescape(tmpl)
def _make_element(parent_elmt, elmt_type, **kwargs):
elmt = ET.SubElement(parent_elmt, elmt_type)
for (key, value) in kwargs.items():
if key == 'css':
elmt.set('class', value)
elif key.startswith('data'):
elmt.set(key.replace('_','-'), value)
elif key == 'content':
elmt.text = value
else:
elmt.set(key, value)
return elmt