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  • SmartClient 7.0rc2:Patch for JS crash when calling getViewState() on undrawn ListGrid

    We made some additions to the information returned by ListGrid.getViewState() between 7.0RC1 and 7.0RC2; a side-effect of this was the introduction of a JS crash if application code calls that method on a grid that has not yet been drawn. This patch resolves that issue.

    Code:
    //----------------------------------------------------------------------------
    // Isomorphic SmartClient 7.0rc2 patch
    // Purpose: Fix JS crash when calling getViewState() on an undrawn ListGrid
    // 
    // Applies to SmartClient 7.0RC2 builds only
    //----------------------------------------------------------------------------
    if (window.isc && isc.version.startsWith("7.0rc2/")) {
        isc.ListGrid.addProperties({
            getSpecifiedFieldWidth : function(_1) {
                _1 = this.getField(_1);
                var _2 = _1[this.fieldIdProperty],
                    _3 = this.header ? this.header.members : null,
                    _4 = this.frozenFields && this.frozenHeader ? this.frozenHeader.members : null,
                    _5;
                if(_3 || _4) {
                    var _6 = _3.find(this.fieldIdProperty, _2);
                    if(!_6 && _4) {
                        _6 = _4.find(this.fieldIdProperty, _2);
                    }
                    if(_6 && _6.$pn && isc.isA.Number(_6.$pn)) {
                        _5 = _6.$pn;
                    }
                }
                return _5;
            }
        });
    } else if (window.isc) {
        isc.logWarn("Patch code included for SmartClient build version 7.0rc2. This page loads " +
        "SmartClient version:" + isc.version + ". The patch code will be disabled for this build and " +
        "should be removed.");
    }
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