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Annotation of modules/damieng/graphical_editor/loncapa_daxe/web/nodes/textline.dart, revision 1.7

1.1       damieng     1: /*
                      2:   This file is part of LONCAPA-Daxe.
                      3: 
                      4:   LONCAPA-Daxe is free software: you can redistribute it and/or modify
                      5:   it under the terms of the GNU General Public License as published by
                      6:   the Free Software Foundation, either version 3 of the License, or
                      7:   (at your option) any later version.
                      8: 
                      9:   LONCAPA-Daxe is distributed in the hope that it will be useful,
                     10:   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     11:   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     12:   GNU General Public License for more details.
                     13: 
                     14:   You should have received a copy of the GNU General Public License
                     15:   along with Daxe.  If not, see <http://www.gnu.org/licenses/>.
                     16: */
                     17: 
                     18: part of loncapa_daxe;
                     19: 
                     20: /**
                     21:  * Display for the textline element, for simple UI (the textline size is displayed like an attribute).
                     22:  * Jaxe display type: 'textline'.
                     23:  */
                     24: class Textline extends LCDBlock {
                     25:   
                     26:   Textline.fromRef(x.Element elementRef) : super.fromRef(elementRef);
                     27:   
                     28:   Textline.fromNode(x.Node node, DaxeNode parent) : super.fromNode(node, parent) {
1.2       damieng    29:     if (simpleParent())
1.1       damieng    30:       simpleUI = true;
                     31:   }
                     32:   
1.4       damieng    33:   @override
                     34:   bool simpleUIPossible() {
                     35:     if (attributes.length != 0) {
                     36:       // accept any size and readonly=no
1.7     ! damieng    37:       // accept spellcheck only with value 'none'
1.4       damieng    38:       for (DaxeAttr att in attributes) {
1.6       damieng    39:         if (!((att.name == 'size' && parent is! OrganicResponse) ||
                     40:             (att.name == 'readonly' && (att.value == 'no' || parent is OrganicResponse ||
1.7     ! damieng    41:             parent is ReactionResponse)) ||
        !            42:             (att.name == 'spellcheck' && (att.value == '' || att.value == 'none')))) {
1.4       damieng    43:           throw new SimpleUIException('textline: ' + LCDStrings.get('attribute_problem') + att.name);
                     44:         }
                     45:       }
                     46:     }
                     47:     if (firstChild != null)
                     48:       return false;
                     49:     return true;
                     50:   }
                     51:   
1.2       damieng    52:   bool simpleParent() {
                     53:     return (parent is LCDBlock && (parent as LCDBlock).simpleUI) &&
1.6       damieng    54:         (parent is NumericalResponse || parent is FormulaResponse || parent is StringResponse ||
                     55:             parent is MathResponse || parent is OrganicResponse || parent is ReactionResponse);
1.2       damieng    56:   }
                     57:   
1.1       damieng    58:   @override
                     59:   h.Element html() {
1.2       damieng    60:     simpleUI = simpleParent();
1.1       damieng    61:     if (!simpleUI)
                     62:       return super.html();
                     63:     
1.3       damieng    64:     // the whole textline node is reduced to its size attribute
1.6       damieng    65:     // or readonly attribute for organicresponse
                     66:     // or size+readonly for reactionresponse
                     67:     h.TableElement table = new h.TableElement();
                     68:     if (parent is! OrganicResponse) {
                     69:       x.Element sizeRef = null;
                     70:       for (x.Element refAttr in attRefs) {
                     71:         String name = doc.cfg.attributeQualifiedName(ref, refAttr);
                     72:         if (name == 'size') {
                     73:           sizeRef = refAttr;
                     74:           break;
                     75:         }
                     76:       }
                     77:       assert(sizeRef != null);
                     78:       
                     79:       h.TableRowElement tr = attributeHTML(sizeRef);
                     80:       tr.id = id;
                     81:       tr.childNodes[1].text = LCDStrings.get('field_size');
                     82:       table.append(tr);
                     83:     }
                     84:     if (parent is OrganicResponse || parent is ReactionResponse) {
                     85:       x.Element readonlyRef = null;
                     86:       for (x.Element refAttr in attRefs) {
                     87:         String name = doc.cfg.attributeQualifiedName(ref, refAttr);
                     88:         if (name == 'readonly') {
                     89:           readonlyRef = refAttr;
                     90:           break;
                     91:         }
1.3       damieng    92:       }
1.6       damieng    93:       assert(readonlyRef != null);
                     94:       
                     95:       h.TableRowElement tr = attributeHTML(readonlyRef);
                     96:       tr.id = id;
                     97:       tr.childNodes[1].text = LCDStrings.get('readonly_field');
                     98:       table.append(tr);
1.3       damieng    99:     }
1.6       damieng   100:     if (table.childNodes.length == 1)
                    101:       return table.firstChild;
                    102:     else
                    103:       return(table);
1.1       damieng   104:   }
                    105:   
1.2       damieng   106:   @override
                    107:   void updateAttributes() {
                    108:     if (!simpleUI) {
                    109:       super.updateAttributes();
                    110:       return;
                    111:     }
                    112:     parent.updateHTML();
                    113:   }
1.1       damieng   114: }